comparison: docs/file_formats/low_resolution.rst
docs/file_formats/low_resolution.rst
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| 1 Low Resolution SCC L1 Products | |
| 2 ============================== | |
| 3 | |
| 4 .. warning:: | |
| 5 This section is still under development. | |
| 6 | |
| 7 | |
| 8 Introduction | |
| 9 ------------ | |
| 10 | |
| 11 The Single Calculus Chain (SCC) is the standard EARLINET tool to perform | |
| 12 automatic and quality nchecked analysis of raw lidar data. It is | |
| 13 composed by three different modules: | |
| 14 | |
| 15 - ELPP (EARLINET Lidar Pre-Processor) | |
| 16 - ELDA (EARLINET Lidar Data Analizer) | |
| 17 - ELDEC (EARLINET Lidar DEpolarization Calibrator) | |
| 18 | |
| 19 Whenever an input file containing raw lidar data has been submitted to | |
| 20 the SCC ELPP is automatically ran on it. The ELPP module pre-processes | |
| 21 the raw data performing all the corrections and data handling needed | |
| 22 before the optical retrieval algorithms can be applied by ELDA module. | |
| 23 The ELPP output files contain pre-processed range corrected signals | |
| 24 corrected for instrumental effects as well as atmospheric molecular | |
| 25 parameters calculated from standard model or radiosounding. Typically, | |
| 26 the vertical and temporal resolutions of the pre-processed signals | |
| 27 included in these files is lower than the raw vertical and temporal | |
| 28 resolution as in general time/vertical integration is performed by ELPP | |
| 29 to increase the SNR and allow the calculation of optical products with a | |
| 30 reduced uncertainties. As a consequence the ELPP output files are called | |
| 31 Low Resolution SCC L1 Products. Another SCC module (HiRELPP – High | |
| 32 Resolution EARLINET Lidar Pre-Processor) currently under development | |
| 33 will produce High Resolution SCC L1 Products in which both time and | |
| 34 vertical resolution are kept as higher as possible. | |
| 35 | |
| 36 This document provides a detailed description about the structure and | |
| 37 the format of Low Resolution SCC L1 Product as produced by the SCC v4.0. | |
| 38 | |
| 39 Low Resolution SCC L1 Product: File format | |
| 40 ------------------------------------------ | |
| 41 | |
| 42 The Low Resolution SCC L1 Products are files in Network Common Data Form | |
| 43 (NetCDF) which is a well known self-describing, machine-independent data | |
| 44 format that support the creation, access, and sharing of array-oriented | |
| 45 scientific data. For more information about NetCDF format: | |
| 46 http://www.unidata.ucar.edu/software/netcdf/. | |
| 47 | |
| 48 The NetCDF is a binary format that allows the definition of | |
| 49 multi-dimensional variables of several types (integers, double, | |
| 50 character, etc). For each variable it is possible to define one or more | |
| 51 attributes where to specify variable properties like units, long name, | |
| 52 description, etc. | |
| 53 | |
| 54 It is possible to define global attributes which are not related to a | |
| 55 specific variable but to the whole file. | |
| 56 | |
| 57 A NetCDF file is composed by four different section: | |
| 58 | |
| 59 dimensions | |
| 60 this section contains all the dimensions used in the definition of | |
| 61 all the variables included in the NetCDF file | |
| 62 | |
| 63 variables | |
| 64 this section contains all the variables stored in the NetCDF file. | |
| 65 Each variable is defined as a multi-dimensional array of a specific | |
| 66 type and with all the dimensions defined in the dimensions section | |
| 67 | |
| 68 global attributes | |
| 69 this section lists all the attributes referring to the whole file. As | |
| 70 the variable the attributes (global or the one attached to a specific | |
| 71 variable) can be of different type | |
| 72 | |
| 73 data | |
| 74 in this section the data contained in each variable defined in | |
| 75 variable section is stored. Attribute values (both global or related | |
| 76 to a specific variable) are not reported in data section but directly | |
| 77 in variable or global attribute sections. | |
| 78 | |
| 79 Each Low Resolution SCC L1 Product correspond to a single emission | |
| 80 wavelength. For example it is possible to find in the same file the | |
| 81 elastic and the Raman channel pre-processed time-series corresponding to | |
| 82 the same emission wavelength (but to a different detection wavelengths) | |
| 83 but not two elastic time-series referring to different emission | |
| 84 wavelengths. | |
| 85 | |
| 86 Low Resolution SCC L1 Product Format: dimensions | |
| 87 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| 88 | |
| 89 The following dimensions are defined in the Low Resolution SCC L1 | |
| 90 Product: | |
| 91 | |
| 92 - time | |
| 93 - points | |
| 94 - channels | |
| 95 - scan\_angles | |
| 96 | |
| 97 The dimension *time* specifies the number of RCS (for each channel) | |
| 98 composing all the pre-processed time-series reported in the file. | |
| 99 | |
| 100 The dimension *points* represents the number of rangebins characterizing | |
| 101 the pre-processed RCS. In case RCSs corresponding to different channels | |
| 102 are characterized by different rangebins the dimension time is to the | |
| 103 the maximum value of rangebins. | |
| 104 | |
| 105 The dimension *channels* indicates the number channels at which the RCS | |
| 106 time-series included in the file refer to. | |
| 107 | |
| 108 The dimension *scan\_angles* takes into account how many zenith scan | |
| 109 angles have been used to measure the RCS time-series reported into the | |
| 110 file | |
| 111 | |
| 112 | |
| 113 Low Resolution SCC L1 Product Format: variables | |
| 114 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| 115 | |
| 116 In this section all the possible Low Resolution SCC L1 Product variables | |
| 117 are reported. There are some variables that are mandatory and have to be | |
| 118 present in all the Low Resolution SCC L1 Product files while there are | |
| 119 others that have to be present only in specific cases. | |
| 120 | |
| 121 Technical Variables | |
| 122 ################### | |
| 123 | |
| 124 altitude\_resolution | |
| 125 :Type: *double* | |
| 126 :Dimensions: *scan\_angles* | |
| 127 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 128 :Definition: ``double altitude_resolution(scan_angles)`` | |
| 129 | |
| 130 This variable describes the altitude resolution | |
| 131 corresponding to the RCS time-series reported in the file. It is needed | |
| 132 to compute the vertical scale of the RCS corresponding to each scan | |
| 133 angle which should be calculated as it follow: | |
| 134 | |
| 135 .. math:: | |
| 136 | |
| 137 H(\alpha, z)= \Delta h(\alpha)\left(z + \frac{1}{2}\right) | |
| 138 | |
| 139 where *z* is the altitude, :math:`\alpha` is the scan angle value and :math:`\Delta h` is the | |
| 140 value reported by *altitude\_resolution* variable. | |
| 141 | |
| 142 range\_resolution | |
| 143 :Type: *double* | |
| 144 :Dimensions: *scan\_angles* | |
| 145 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 146 :Definition: ``double range_resolution(scan_angles)`` | |
| 147 | |
| 148 This variable describes the range resolution corresponding | |
| 149 to the RCS time-series reported in the file. It is needed to compute the | |
| 150 range scale of the RCS corresponding to each scan angle which should be | |
| 151 calculated as it follow: | |
| 152 | |
| 153 .. math:: | |
| 154 | |
| 155 R(\alpha, z)= \Delta r(\alpha)\left(r + \frac{1}{2}\right) | |
| 156 | |
| 157 where *r* is the range, :math:`\alpha` is the scan angle value and :math:`\Delta r` is the | |
| 158 value reported by *range\_resolution* variable. Altitude and range | |
| 159 resolution are the same if the scan angle is zero (zenith acquisition). | |
| 160 | |
| 161 laser\_pointing\_angle | |
| 162 :Type: *double* | |
| 163 :Dimensions: *scan\_angles* | |
| 164 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 165 :Definition: ``double laser_pointing_angle(scan_angles)`` | |
| 166 | |
| 167 This variable provides the value of the zenith scan angles | |
| 168 used during the measurement. The value of angle are in degrees with | |
| 169 respect to the zenith direction. | |
| 170 | |
| 171 emission\_wavelength | |
| 172 :Type: *double* | |
| 173 :Dimensions: *channels* | |
| 174 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 175 :Definition: ``double emission_wavelength(channels)`` | |
| 176 | |
| 177 This variable provides the value of the emission wavelength | |
| 178 (in nm) corresponding to each RCS time-series. | |
| 179 | |
| 180 detection\_wavelength | |
| 181 :Type: *double* | |
| 182 :Dimensions: *channels* | |
| 183 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 184 :Definition: ``double detection_wavelength(channels)`` | |
| 185 | |
| 186 This variable provides the value of the detection | |
| 187 wavelength (in nm) corresponding to each RCS time-series. For elastic | |
| 188 channels the detection and emission wavelength are the same or slightly | |
| 189 different. | |
| 190 | |
| 191 laser\_pointing\_angle\_of\_profiles | |
| 192 :Type: *integer* | |
| 193 :Dimensions: *time* | |
| 194 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 195 :Definition: ``int laser_pointing_angle_of_profiles(time)`` | |
| 196 | |
| 197 This variable allows to identify the zenith angle at which | |
| 198 each single RCS contained in the time-series refer to. In particular, | |
| 199 for a given time the variable | |
| 200 *laser\_pointing\_angle\_of\_profiles(time)* provides the scan angle | |
| 201 index at which all the RCS included in the file refer to at the same | |
| 202 time. To get the value of the scan angle the variable | |
| 203 *laser\_pointing\_angle* should be evaluated in correspondence of the | |
| 204 index returned by the variable | |
| 205 *laser\_pointing\_angle\_of\_profiles(time)*. | |
| 206 | |
| 207 shots | |
| 208 :Type: *integer* | |
| 209 :Dimensions: *time* | |
| 210 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 211 :Definition: ``int shots(time)`` | |
| 212 | |
| 213 This variable report the number of laser shots that have | |
| 214 been integrated the all the RCS time-series at a given time. | |
| 215 | |
| 216 start\_time | |
| 217 :Type: *integer* | |
| 218 :Dimensions: *time* | |
| 219 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 220 :Definition: ``int start_time(time)`` | |
| 221 | |
| 222 Variable reporting the value of the start time of each RCS | |
| 223 within all the time-series in seconds since the start of measurement. | |
| 224 | |
| 225 stop\_time | |
| 226 :Type: *integer* | |
| 227 :Dimensions: *time* | |
| 228 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 229 :Definition: ``int stop_time(time)`` | |
| 230 | |
| 231 Variables reporting the value of the stop time of each RCS | |
| 232 within all the time-series in seconds since the start of the | |
| 233 measurement. | |
| 234 | |
| 235 LR\_Input | |
| 236 :Type: *integer* | |
| 237 :Dimensions: N/A | |
| 238 :Location: Present only if the Low Resolution SCC L1 Product corresponds | |
| 239 to an elastic only product | |
| 240 :Definition: ``int LR_Input`` | |
| 241 | |
| 242 This variable is only used by ELDA module in the elastic | |
| 243 only retrieval to know which value of particle lidar ratio assume in the | |
| 244 retrieval. A value of 1 means to use a fixed value stored in the SCC | |
| 245 database for each product. A value of 0 means to use a profile of lidar | |
| 246 ratio provided by the user as external file. | |
| 247 | |
| 248 overlap\_correction | |
| 249 :Type: *integer* | |
| 250 :Dimensions: N/A | |
| 251 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 252 :Definition: ``int overlap_correction`` | |
| 253 | |
| 254 This variable provides information on the overlap | |
| 255 correction of all the RCS time-series included in the file. If it is set | |
| 256 to 1 the overlap correction has been applied if it is set to null value | |
| 257 the overlap correction has not been applied. | |
| 258 | |
| 259 cloud\_flag | |
| 260 :Type: *integer* | |
| 261 :Dimensions: *time, points* | |
| 262 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 263 :Definition: ``int cloud_flag(time, points)`` | |
| 264 | |
| 265 variable reporting the cloud mask on the RCS time-series | |
| 266 included in the file. A value of 1 means no cloud any other values | |
| 267 different from 1 correspond to the presence of cloud. | |
| 268 | |
| 269 Atmospheric Molecular Variables | |
| 270 ############################### | |
| 271 | |
| 272 Elastic\_Mol\_Extinction | |
| 273 :Type: *double* | |
| 274 :Dimensions: *scan\_angles, points* | |
| 275 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 276 :Definition: *double Elastic\_Mol\_Extinction(scan\_angles, points)* | |
| 277 | |
| 278 This variable provides the value of molecular extinction | |
| 279 coefficient at elastic wavelength in m\ :sup:`-1` at a given scan angle | |
| 280 and altitude (points). The values are calculated from standard models or | |
| 281 from radiosounding (submitted to the SCC as external input files) | |
| 282 | |
| 283 LR\_Mol | |
| 284 :Type: *double* | |
| 285 :Dimensions: N/A | |
| 286 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 287 :Definition: ``double LR_Mol`` | |
| 288 | |
| 289 The value of calculated molecular lidar ratio in sr. | |
| 290 | |
| 291 Emission\_Wave\_Mol\_Trasmissivity | |
| 292 :Type: *double* | |
| 293 :Dimensions: *scan\_angles, points* | |
| 294 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 295 :Definition: ``double Emission_Wave_Mol_Trasmissivity(scan_angles, points)`` | |
| 296 | |
| 297 This variable provides the value of molecular trasmissitivy | |
| 298 at emission wavelength at a given scan angle and altitude (*points*). | |
| 299 | |
| 300 Detection\_Wave\_Mol\_Trasmissivity | |
| 301 :Type: *double* | |
| 302 :Dimensions: *scan\_angles, points* | |
| 303 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 304 :Definition: ``double Detection_Wave_Mol_Trasmissivity(scan_angles, points)`` | |
| 305 | |
| 306 This variable provides the value of molecular trasmissitivy | |
| 307 at detection wavelength at a given scan angle and altitude (*points*). | |
| 308 | |
| 309 Aerosol Related Variables | |
| 310 ######################### | |
| 311 | |
| 312 elT | |
| 313 :Type: *double* | |
| 314 :Dimensions: *time, points* | |
| 315 :Location: Present if the Low Resolution SCC L1 Product involves one | |
| 316 single elastic channel not split in near and far range | |
| 317 :Definition: ``double elT(time, points)`` | |
| 318 | |
| 319 This variable contains the time-series of the RCS | |
| 320 corresponding to an elastic channel. The RCS may correspond to a single | |
| 321 physical lidar channel or to two physical channels (one optimized for | |
| 322 the near range and the other for the far range) that have been glued by | |
| 323 ELPP module. | |
| 324 | |
| 325 elT\_err | |
| 326 :Type: *double* | |
| 327 :Dimensions: *time, points* | |
| 328 :Location: Present if the Low Resolution SCC L1 Product involves one | |
| 329 single elastic channel not split in near and far range | |
| 330 :Definition: ``double elT_err(time, points)`` | |
| 331 | |
| 332 This variable describes the statistical uncertainties | |
| 333 corresponding to the variable *elT*. | |
| 334 | |
| 335 elTnr | |
| 336 :Variable name: *elTnr* | |
| 337 :Type: *double* | |
| 338 :Dimensions: *time, points* | |
| 339 :Location: Present if the Low Resolution SCC L1 Product involves a near | |
| 340 range elastic channel | |
| 341 :Definition: ``double elTnr(time, points)`` | |
| 342 | |
| 343 This variable contains the time-series of the RCS | |
| 344 corresponding to a near range elastic channel. If this variable is | |
| 345 present also the corresponding *elTfr* variable should be present in | |
| 346 the file. | |
| 347 | |
| 348 elTnr\_err | |
| 349 :Type: *double* | |
| 350 :Dimensions: * time, points* | |
| 351 :Location: Present if the Low Resolution SCC L1 Product involves a near | |
| 352 range elastic channel | |
| 353 :Definition: ``double elTnr_err(time, points)`` | |
| 354 | |
| 355 This variable describes the statistical uncertainties | |
| 356 corresponding to the variable *elTnr*. | |
| 357 | |
| 358 elTfr | |
| 359 :Type: *double* | |
| 360 :Dimensions: *time, points* | |
| 361 :Location: Present if the Low Resolution SCC L1 Product involves a far | |
| 362 range elastic channel | |
| 363 :Definition: ``double elTfr(time, points)`` | |
| 364 | |
| 365 This variable contains the time-series of the RCS | |
| 366 corresponding to a far range elastic channel. If this variable is | |
| 367 present also the corresponding *elTnr* variable should be present in | |
| 368 the file. | |
| 369 | |
| 370 elTfr\_err | |
| 371 :Type: *double* | |
| 372 :Dimensions: *time, points* | |
| 373 :Location: Present if the Low Resolution SCC L1 Product involves a far | |
| 374 range elastic channel | |
| 375 :Definition: ``double elTfr_err(time, points)`` | |
| 376 | |
| 377 This variable describes the statistical uncertainties | |
| 378 corresponding to the variable *elTfr*. | |
| 379 | |
| 380 vrRN2 | |
| 381 :Type: * double* | |
| 382 :Dimensions: *time, points* | |
| 383 :Location: Present if the Low Resolution SCC L1 Product involves one | |
| 384 vibro-rotational N2 Raman channel not split in near and far range | |
| 385 :Definition: ``double vrRN2(time, points)`` | |
| 386 | |
| 387 This variable contains the time-series of the RCS | |
| 388 corresponding to a vibro-rotational N2 Raman channel. The RCS may | |
| 389 correspond to a single physical lidar channel or to two physical | |
| 390 channels (one optimized for the near range and the other for the far | |
| 391 range) that have been glued by ELPP module. | |
| 392 | |
| 393 vrRN2\_err | |
| 394 :Type: *double* | |
| 395 :Dimensions: *time, points* | |
| 396 :Location: Present if the Low Resolution SCC L1 Product involves one | |
| 397 vibro-rotational N2 Raman channel not split in near and far range | |
| 398 :Definition: ``double vrRN2_err(time, points)`` | |
| 399 | |
| 400 This variable describes the statistical uncertainties | |
| 401 corresponding to the variable *vrRN2*. | |
| 402 | |
| 403 vrRN2nr | |
| 404 :Type: *double* | |
| 405 :Dimensions: *time, points* | |
| 406 :Location: Present if the Low Resolution SCC L1 Product involves a near | |
| 407 range vibro-rotational N2 Raman channel | |
| 408 :Definition: ``double vrRN2nr(time, points)`` | |
| 409 | |
| 410 This variable contains the time-series of the RCS | |
| 411 corresponding to a near range vibro-rotationl N2 Raman. If this variable | |
| 412 is present also the corresponding *vrRN2fr* variable should be present | |
| 413 in the file. | |
| 414 | |
| 415 vrRN2nr\_err | |
| 416 :Type: *double* | |
| 417 :Dimensions: *time, points* | |
| 418 :Location: Present if the Low Resolution SCC L1 Product involves a near | |
| 419 range vibro-rotational N2 Raman channel | |
| 420 :Definition: ``double vrRN2nr_err(time, points)`` | |
| 421 | |
| 422 This variable describes the statistical uncertainties | |
| 423 corresponding to the variable *vrRN2nr*. | |
| 424 | |
| 425 vrRN2fr | |
| 426 :Type: *double* | |
| 427 :Dimensions: *time, points* | |
| 428 :Location: Present if the Low Resolution SCC L1 Product involves a far | |
| 429 range vibro-rotational N2 Raman channel | |
| 430 :Definition: ``double vrRN2fr(time, points)`` | |
| 431 | |
| 432 This variable contains the time-series of the RCS | |
| 433 corresponding to a far range vibro-rotationl N2 Raman. If this variable | |
| 434 is present also the corresponding *vrRN2nr* variable should be present | |
| 435 in the file. | |
| 436 | |
| 437 vrRN2fr\_err | |
| 438 :Type: *double* | |
| 439 :Dimensions: * time, points* | |
| 440 :Location: Present if the Low Resolution SCC L1 Product involves a far | |
| 441 range vibro-rotational N2 Raman channel | |
| 442 :Definition: ``double vrRN2fr_err(time, points)`` | |
| 443 | |
| 444 This variable describes the statistical uncertainties | |
| 445 corresponding to the variable *vrRN2fr*. | |
| 446 | |
| 447 Polarization related variables | |
| 448 ############################## | |
| 449 | |
| 450 elPT | |
| 451 :Type: *double* | |
| 452 :Dimensions: *time, points* | |
| 453 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 454 polarization sensitive elastic channels not split in near and far range | |
| 455 :Definition: ``double elPT(time, points)`` | |
| 456 | |
| 457 This variable contains the time-series of the RCS | |
| 458 corresponding to the elastic polarization component which is transmitted | |
| 459 by the polarization sensitive optical subsystem. This component may | |
| 460 correspond to a total, cross or parallel polarization component | |
| 461 depending on the particular system configuration. Moreover the RCS may | |
| 462 correspond to a single physical lidar channel or to two physical | |
| 463 channels (one optimized for the near range and the other for the far | |
| 464 range) that have been glued by ELPP module. | |
| 465 | |
| 466 elPT\_err | |
| 467 :Type: *double* | |
| 468 :Dimensions: *time, points* | |
| 469 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 470 spolarization sensitive elastic channels not split in near and far range | |
| 471 :Definition: ``double elPT_err(time, points)`` | |
| 472 | |
| 473 This variable describes the statistical uncertainties | |
| 474 corresponding to the variable *elPT*. | |
| 475 | |
| 476 elPTnr | |
| 477 :Type: *double* | |
| 478 :Dimensions: * time, points* | |
| 479 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 480 range polarization sensitive elastic channels | |
| 481 :Definition: ``double elPTnr(time, points)`` | |
| 482 | |
| 483 This variable contains the time-series of the RCS | |
| 484 corresponding to the near range elastic polarization component which is | |
| 485 transmitted by the polarization sensitive optical subsystem. This | |
| 486 component may correspond to a total, cross or parallel polarization | |
| 487 component depending on the particular system configuration. If this | |
| 488 variable is present also the corresponding *elPTfr* variable should be | |
| 489 present in the file. | |
| 490 | |
| 491 elPTnr\_err | |
| 492 :Type: *double* | |
| 493 :Dimensions: * time, points* | |
| 494 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 495 range polarization sensitive elastic channels | |
| 496 :Definition: ``double elPTnr_err(time, points)`` | |
| 497 | |
| 498 This variable describes the statistical uncertainties | |
| 499 corresponding to the variable *elPTnr*. | |
| 500 | |
| 501 elPTfr | |
| 502 :Type: *double* | |
| 503 :Dimensions: *time, points* | |
| 504 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 505 range polarization sensitive elastic channels | |
| 506 :Definition: ``double elTfr(time, points)`` | |
| 507 | |
| 508 This variable contains the time-series of the RCS | |
| 509 corresponding to the far range elastic polarization component which is | |
| 510 transmitted by the polarization sensitive optical subsystem. This | |
| 511 component may correspond to a total, cross or parallel polarization | |
| 512 component depending on the particular system configuration. If this | |
| 513 variable is present also the corresponding elPTnr variable should be | |
| 514 present in the file. | |
| 515 | |
| 516 elPTfr\_err | |
| 517 :Type: *double* | |
| 518 :Dimensions: * time, points* | |
| 519 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 520 range polarization sensitive elastic channels | |
| 521 :Definition: ``double elPTfr_err(time, points)`` | |
| 522 | |
| 523 This variable describes the statistical uncertainties | |
| 524 corresponding to the variable *elPTfr*. | |
| 525 | |
| 526 elPR | |
| 527 :Type: *double* | |
| 528 :Dimensions: *time, points* | |
| 529 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 530 polarization sensitive elastic channels not split in near and far range | |
| 531 :Definition: ``double elPR(time, points)`` | |
| 532 | |
| 533 This variable contains the time-series of the RCS | |
| 534 corresponding to the elastic polarization component which is reflected | |
| 535 by the polarization sensitive optical subsystem. This component may | |
| 536 correspond to a total, cross or parallel polarization component | |
| 537 depending on the particular system configuration. Moreover the RCS may | |
| 538 correspond to a single physical lidar channel or to two physical | |
| 539 channels (one optimized for the near range and the other for the far | |
| 540 range) that have been glued by ELPP module. | |
| 541 | |
| 542 elPR\_err | |
| 543 :Type: *double* | |
| 544 :Dimensions: * time, points* | |
| 545 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 546 polarization sensitive elastic channels not split in near and far range | |
| 547 :Definition: ``double elPR_err(time, points)`` | |
| 548 | |
| 549 This variable describes the statistical uncertainties | |
| 550 corresponding to the variable *elPR*. | |
| 551 | |
| 552 elPRnr | |
| 553 :Type: *double* | |
| 554 :Dimensions: * time, points* | |
| 555 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 556 range polarization sensitive elastic channels | |
| 557 :Definition: ``double elPTnr(time, points)`` | |
| 558 | |
| 559 This variable contains the time-series of the RCS | |
| 560 corresponding to the near range elastic polarization component which is | |
| 561 reflected by the polarization sensitive optical subsystem. This | |
| 562 component may correspond to a total, cross or parallel polarization | |
| 563 component depending on the particular system configuration. If this | |
| 564 variable is present also the corresponding *elPRfr* variable should be | |
| 565 present in the file. | |
| 566 | |
| 567 elPRnr\_err | |
| 568 :Type: *double* | |
| 569 :Dimensions: *time, points* | |
| 570 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 571 range polarization sensitive elastic channels | |
| 572 :Definition: `` double elPRnr_err(time, points)`` | |
| 573 | |
| 574 This variable describes the statistical uncertainties | |
| 575 corresponding to the variable *elPRnr*. | |
| 576 | |
| 577 elPRfr | |
| 578 :Type: *double* | |
| 579 :Dimensions: *time, points* | |
| 580 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 581 range polarization sensitive elastic channels | |
| 582 :Definition: ``double elPRfr(time, points)`` | |
| 583 | |
| 584 This variable contains the time-series of the RCS | |
| 585 corresponding to the far range elastic polarization component which is | |
| 586 reflected by the polarization sensitive optical subsystem. This | |
| 587 component may correspond to a total, cross or parallel polarization | |
| 588 component depending on the particular system configuration. If this | |
| 589 variable is present also the corresponding *elPRnr* variable should be | |
| 590 present in the file. | |
| 591 | |
| 592 elPRfr\_err | |
| 593 :Type: *double* | |
| 594 :Dimensions: *time, points* | |
| 595 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 596 range polarization sensitive elastic channels | |
| 597 :Definition: ``double elPRfr_err(time, points)`` | |
| 598 | |
| 599 This variable describes the statistical uncertainties | |
| 600 corresponding to the variable *elPRfr*. | |
| 601 | |
| 602 G\_T | |
| 603 :Type: *double* | |
| 604 :Dimensions: N/A | |
| 605 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 606 polarization sensitive elastic channels | |
| 607 :Definition: ``double G_T`` | |
| 608 | |
| 609 G polarization cross-talk factor value corresponding to the | |
| 610 polarization transmitted channel. | |
| 611 | |
| 612 G\_T\_Statistical\_Err | |
| 613 :Type: *double* | |
| 614 :Dimensions: N/A | |
| 615 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 616 polarization sensitive elastic channels | |
| 617 :Definition: ``double G_T_Statistical_Err`` | |
| 618 | |
| 619 This variable describes the statistical uncertainties | |
| 620 corresponding to the variable *G\_T*. | |
| 621 | |
| 622 G\_T\_Systematic\_Err | |
| 623 :Type: *double* | |
| 624 :Dimensions: N/A | |
| 625 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 626 polarization sensitive elastic channels | |
| 627 :Definition: ``double G_T_Systematic_Err`` | |
| 628 | |
| 629 This variable describes the systematic uncertainties | |
| 630 corresponding to the variable *G\_T*. | |
| 631 | |
| 632 H\_T | |
| 633 :Type: *double* | |
| 634 :Dimensions: N/A | |
| 635 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 636 polarization sensitive elastic channels | |
| 637 :Definition: ``double H_T`` | |
| 638 | |
| 639 H polarization cross-talk factor value corresponding to the | |
| 640 polarization transmitted channel. | |
| 641 | |
| 642 H\_T\_Statistical\_Err | |
| 643 :Type: *double* | |
| 644 :Dimensions: N/A | |
| 645 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 646 polarization sensitive elastic channels | |
| 647 :Definition: ``double H_T_Statistical_Err`` | |
| 648 | |
| 649 This variable describes the statistical uncertainties | |
| 650 corresponding to the variable *H\_T*. | |
| 651 | |
| 652 H\_T\_Systematic\_Err | |
| 653 :Type: *double* | |
| 654 :Dimensions: N/A | |
| 655 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 656 polarization sensitive elastic channels | |
| 657 :Definition: ``double H_T_Systematic_Err`` | |
| 658 | |
| 659 This variable describes the systematic uncertainties | |
| 660 corresponding to the variable *H\_T*. | |
| 661 | |
| 662 G\_R | |
| 663 :Type: *double* | |
| 664 :Dimensions: N/A | |
| 665 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 666 polarization sensitive elastic channels | |
| 667 :Definition: ``double G_R`` | |
| 668 | |
| 669 G polarization cross-talk factor value corresponding to the | |
| 670 polarization reflected channel. | |
| 671 | |
| 672 G\_R\_Statistical\_Err | |
| 673 :Type: *double* | |
| 674 :Dimensions: N/A | |
| 675 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 676 polarization sensitive elastic channels | |
| 677 :Definition: ``double G_R_Statistical_Err`` | |
| 678 | |
| 679 This variable describes the statistical uncertainties | |
| 680 corresponding to the variable *G\_R*. | |
| 681 | |
| 682 G\_R\_Systematic\_Err | |
| 683 :Type: *double* | |
| 684 :Dimensions: N/A | |
| 685 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 686 polarization sensitive elastic channels | |
| 687 :Definition: `` double G_R_Systematic_Err`` | |
| 688 | |
| 689 This variable describes the systematic uncertainties | |
| 690 corresponding to the variable *G\_R*. | |
| 691 | |
| 692 H\_R | |
| 693 :Type: *double* | |
| 694 :Dimensions: N/A | |
| 695 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 696 polarization sensitive elastic channels | |
| 697 :Definition: ``double H_R`` | |
| 698 | |
| 699 H polarization cross-talk factor value corresponding to the | |
| 700 polarization reflected channel. | |
| 701 | |
| 702 H\_R\_Statistical\_Err | |
| 703 :Type: *double* | |
| 704 :Dimensions: N/A | |
| 705 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 706 polarization sensitive elastic channels | |
| 707 :Definition: ``double H_R_Statistical_Err`` | |
| 708 | |
| 709 This variable describes the statistical uncertainties | |
| 710 corresponding to the variable *H\_R*. | |
| 711 | |
| 712 H\_R\_Systematic\_Err | |
| 713 :Type: *double* | |
| 714 :Dimensions: N/A | |
| 715 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 716 polarization sensitive elastic channels | |
| 717 :Definition: ``double H_R_Systematic_Err`` | |
| 718 | |
| 719 This variable describes the systematic uncertainties | |
| 720 corresponding to the variable *H\_R*. | |
| 721 | |
| 722 Polarization\_Channel\_Gain\_Factor | |
| 723 :Type: *double* | |
| 724 :Dimensions: N/A | |
| 725 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 726 polarization sensitive elastic channels | |
| 727 :Definition: ``double Polarization_Channel_Gain_Factor`` | |
| 728 | |
| 729 This variable reports the value of the gain ratio of the | |
| 730 reflected and transmitted polarization channels. | |
| 731 | |
| 732 Polarization\_Channel\_Gain\_Factor\_Statistical\_Err | |
| 733 :Type: *double* | |
| 734 :Dimensions: N/A | |
| 735 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 736 polarization sensitive elastic channels | |
| 737 :Definition: ``double Polarization_Channel_Gain_Factor_Statistical_Err`` | |
| 738 | |
| 739 This variable describes the statistical uncertainties | |
| 740 corresponding to the variable *Polarization\_Channel\_Gain\_Factor*. | |
| 741 | |
| 742 Polarization\_Channel\_Gain\_Factor\_Systematic\_Err | |
| 743 :Type: *double* | |
| 744 :Dimensions: N/A | |
| 745 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 746 polarization sensitive elastic channels | |
| 747 :Definition: ``double Polarization_Channel_Gain_Factor_Systematic_Err`` | |
| 748 | |
| 749 This variable describes the systematic uncertainties | |
| 750 corresponding to the variable *Polarization\_Channel\_Gain\_Factor*. | |
| 751 | |
| 752 Polarization\_Channel\_Gain\_Factor\_Correction | |
| 753 :Type: *double* | |
| 754 :Dimensions: N/A | |
| 755 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 756 polarization sensitive elastic channels | |
| 757 :Definition: ``double Polarization_Channel_Gain_Factor_Correction`` | |
| 758 | |
| 759 This variable reports the value of the correction to the | |
| 760 gain ratio of the reflected and transmitted polarization channels. | |
| 761 | |
| 762 Polarization\_Channel\_Gain\_Factor\_Correction\_Statistical\_Err | |
| 763 :Type: *double* | |
| 764 :Dimensions: N/A | |
| 765 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 766 polarization sensitive elastic channels | |
| 767 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Statistical_Err`` | |
| 768 | |
| 769 This variable describes the statistical uncertainties | |
| 770 corresponding to the variable | |
| 771 | |
| 772 Polarization\_Channel\_Gain\_Factor\_Correction | |
| 773 | |
| 774 Polarization\_Channel\_Gain\_Factor\_Correction\_Systematic\_Err | |
| 775 :Type: *double* | |
| 776 :Dimensions: N/A | |
| 777 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 778 polarization sensitive elastic channels | |
| 779 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Systematic_Err`` | |
| 780 | |
| 781 This variable describes the systematic uncertainties | |
| 782 corresponding to the variable *Polarization\_Channel\_Gain\_Factor\_Correction*. | |
| 783 | |
| 784 G\_T\_Near\_Range | |
| 785 :Type: *double* | |
| 786 :Dimensions: N/A | |
| 787 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 788 range polarization sensitive elastic channels | |
| 789 :Definition: ``double G_T_Near_Range`` | |
| 790 | |
| 791 G polarization cross-talk factor value corresponding to the | |
| 792 near range polarization transmitted channel. | |
| 793 | |
| 794 G\_T\_Near\_Range\_Statistical\_Err | |
| 795 :Type: *double* | |
| 796 :Dimensions: N/A | |
| 797 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 798 range polarization sensitive elastic channels | |
| 799 :Definition: ``double G_T_Near_Range_Statistical_Err`` | |
| 800 | |
| 801 This variable describes the statistical uncertainties | |
| 802 corresponding to the variable *G\_T\_Near\_Range*. | |
| 803 | |
| 804 G\_T\_Near\_Range\_Systematic\_Err | |
| 805 :Type: *double* | |
| 806 :Dimensions: N/A | |
| 807 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 808 range polarization sensitive elastic channels | |
| 809 :Definition: ``double G_T_Near_Range_Systematic_Err`` | |
| 810 | |
| 811 This variable describes the systematic uncertainties | |
| 812 corresponding to the variable *G\_T\_Near\_Range*. | |
| 813 | |
| 814 H\_T\_Near\_Range | |
| 815 :Type: *double* | |
| 816 :Dimensions: N/A | |
| 817 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 818 range polarization sensitive elastic channels | |
| 819 :Definition: ``double H_T_Near_Range`` | |
| 820 | |
| 821 H polarization cross-talk factor value corresponding to the | |
| 822 near range polarization transmitted channel. | |
| 823 | |
| 824 H\_T\_Near\_Range\_Statistical\_Err | |
| 825 :Type: *double* | |
| 826 :Dimensions: N/A | |
| 827 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 828 range polarization sensitive elastic channels | |
| 829 :Definition: ``double H_T_Near_Range_Statistical_Err`` | |
| 830 | |
| 831 This variable describes the statistical uncertainties | |
| 832 corresponding to the variable *H\_T\_Near\_Range*. | |
| 833 | |
| 834 H\_T\_Near\_Range\_Systematic\_Err | |
| 835 :Type: *double* | |
| 836 :Dimensions: N/A | |
| 837 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 838 range polarization sensitive elastic channels | |
| 839 :Definition: ``double H_T_Near_Range_Systematic_Err`` | |
| 840 | |
| 841 This variable describes the systematic uncertainties | |
| 842 corresponding to the variable *H\_T\_Near\_Range*. | |
| 843 | |
| 844 G\_R\_Near\_Range | |
| 845 :Type: *double* | |
| 846 :Dimensions: N/A | |
| 847 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 848 range polarization sensitive elastic channels | |
| 849 :Definition: ``double G_R_Near_Range`` | |
| 850 | |
| 851 G polarization cross-talk factor value corresponding to the | |
| 852 near range polarization reflected channel. | |
| 853 | |
| 854 G\_R\_Near\_Range\_Statistical\_Err | |
| 855 :Type: *double* | |
| 856 :Dimensions: N/A | |
| 857 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 858 range polarization sensitive elastic channels | |
| 859 :Definition: ``double G_R_Near_Range_Statistical_Err`` | |
| 860 | |
| 861 This variable describes the statistical uncertainties | |
| 862 corresponding to the variable *G\_R\_Near\_Range*. | |
| 863 | |
| 864 G\_R\_Near\_Range\_Systematic\_Err | |
| 865 :Type: *double* | |
| 866 :Dimensions: N/A | |
| 867 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 868 range polarization sensitive elastic channels | |
| 869 :Definition: ``double G_R_Near_Range_Systematic_Err`` | |
| 870 | |
| 871 This variable describes the systematic uncertainties | |
| 872 corresponding to the variable *G\_R\_Near\_Range*. | |
| 873 | |
| 874 H\_R\_Near\_Range | |
| 875 :Type: *double* | |
| 876 :Dimensions: N/A | |
| 877 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 878 range polarization sensitive elastic channels | |
| 879 :Definition: ``double H_R_Near_Range`` | |
| 880 | |
| 881 H polarization cross-talk factor value corresponding to the | |
| 882 near range polarization reflected channel. | |
| 883 | |
| 884 H\_R\_Near\_Range\_Statistical\_Err | |
| 885 :Type: *double* | |
| 886 :Dimensions: N/A | |
| 887 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 888 range polarization sensitive elastic channels | |
| 889 :Definition: ``double H_R_Near_Range_Statistical_Err`` | |
| 890 | |
| 891 This variable describes the statistical uncertainties | |
| 892 corresponding to the variable *H\_R\_Near\_Range*. | |
| 893 | |
| 894 H\_R\_Near\_Range\_Systematic\_Err | |
| 895 :Type: *double* | |
| 896 :Dimensions: N/A | |
| 897 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 898 range polarization sensitive elastic channels | |
| 899 :Definition: ``double H_R_Near_Range_Systematic_Err`` | |
| 900 | |
| 901 This variable describes the systematic uncertainties | |
| 902 corresponding to the variable *H\_R\_Near\_Range*. | |
| 903 | |
| 904 Polarization\_Channel\_Gain\_Factor\_Near\_Range | |
| 905 :Type: *double* | |
| 906 :Dimensions: N/A | |
| 907 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 908 range polarization sensitive elastic channels | |
| 909 :Definition: ``double Polarization_Channel_Gain_Factor_Near_Range`` | |
| 910 | |
| 911 This variable reports the value of the gain ratio of the | |
| 912 near range reflected and transmitted polarization channels. | |
| 913 | |
| 914 Polarization\_Channel\_Gain\_Factor\_Near\_Range\_Statistical\_Err | |
| 915 :Type: *double* | |
| 916 :Dimensions: N/A | |
| 917 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 918 range polarization sensitive elastic channels | |
| 919 :Definition: ``double Polarization_Channel_Gain_Factor_Near_Range_Statistical_Err`` | |
| 920 | |
| 921 This variable describes the statistical uncertainties | |
| 922 corresponding to the variable *Polarization\_Channel\_Gain\_Near\_Range\_Factor*. | |
| 923 | |
| 924 Polarization\_Channel\_Gain\_Factor\_Near\_Range\_Systematic\_Err | |
| 925 :Type: *double* | |
| 926 :Dimensions: N/A | |
| 927 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 928 range polarization sensitive elastic channels | |
| 929 :Definition: ``double Polarization_Channel_Gain_Factor_Near_Range_Systematic_Err`` | |
| 930 | |
| 931 This variable describes the systematic uncertainties | |
| 932 corresponding to the variable *Polarization\_Channel\_Gain\_Factor\_Near\_Range*. | |
| 933 | |
| 934 Polarization\_Channel\_Gain\_Factor\_Correction\_Near\_Range | |
| 935 :Type: *double* | |
| 936 :Dimensions: N/A | |
| 937 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 938 range polarization sensitive elastic channels | |
| 939 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Near_Range`` | |
| 940 | |
| 941 This variable reports the value of the correction to the | |
| 942 near range gain ratio of the reflected and transmitted polarization | |
| 943 channels. | |
| 944 | |
| 945 Polarization\_Channel\_Gain\_Factor\_Correction\_Near\_Range\_Statistical\_Err | |
| 946 :Type: *double* | |
| 947 :Dimensions: N/A | |
| 948 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 949 range polarization sensitive elastic channels | |
| 950 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Near_Range_Statistical_Err`` | |
| 951 | |
| 952 This variable describes the statistical uncertainties | |
| 953 corresponding to the variable Polarization\_Channel\_Gain\_Factor\_Correction\_Near\_Range | |
| 954 | |
| 955 Polarization\_Channel\_Gain\_Factor\_Correction\_Near\_Range\_Systematic\_Err | |
| 956 :Type: *double* | |
| 957 :Dimensions: N/A | |
| 958 :Location: Present if the Low Resolution SCC L1 Product involves near | |
| 959 range polarization sensitive elastic channels | |
| 960 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Near_Range_Systematic_Err`` | |
| 961 | |
| 962 This variable describes the systematic uncertainties | |
| 963 corresponding to the variable *Polarization\_Channel\_Gain\_Factor\_Correction\_Near\_Range*. | |
| 964 | |
| 965 G\_T\_Far\_Range | |
| 966 :Type: *double* | |
| 967 :Dimensions: N/A | |
| 968 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 969 range polarization sensitive elastic channels | |
| 970 :Definition: ``double G_T_Far_Range`` | |
| 971 | |
| 972 G polarization cross-talk factor value corresponding to the | |
| 973 far range polarization transmitted channel. | |
| 974 | |
| 975 G\_T\_Far\_Range\_Statistical\_Err | |
| 976 :Type: *double* | |
| 977 :Dimensions: N/A | |
| 978 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 979 range polarization sensitive elastic channels | |
| 980 :Definition: ``double G_T_Far_Range_Statistical_Err`` | |
| 981 | |
| 982 This variable describes the statistical uncertainties | |
| 983 corresponding to the variable *G\_T\_Far\_Range*. | |
| 984 | |
| 985 G\_T\_Far\_Range\_Systematic\_Err | |
| 986 :Type: *double* | |
| 987 :Dimensions: N/A | |
| 988 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 989 range polarization sensitive elastic channels | |
| 990 :Definition: ``double G_T_Far_Range_Systematic_Err`` | |
| 991 | |
| 992 This variable describes the systematic uncertainties | |
| 993 corresponding to the variable *G\_T\_Far\_Range*. | |
| 994 | |
| 995 H\_T\_Far\_Range | |
| 996 :Type: *double* | |
| 997 :Dimensions: N/A | |
| 998 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 999 range polarization sensitive elastic channels | |
| 1000 :Definition: ``double H_T_Far_Range`` | |
| 1001 | |
| 1002 H polarization cross-talk factor value corresponding to the | |
| 1003 far range polarization transmitted channel. | |
| 1004 | |
| 1005 H\_T\_Far\_Range\_Statistical\_Err | |
| 1006 :Type: *double* | |
| 1007 :Dimensions: N/A | |
| 1008 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1009 range polarization sensitive elastic channels | |
| 1010 :Definition: ``double H_T_Far_Range_Statistical_Err`` | |
| 1011 | |
| 1012 This variable describes the statistical uncertainties | |
| 1013 corresponding to the variable *H\_T\_Far\_Range*. | |
| 1014 | |
| 1015 H\_T\_Far\_Range\_Systematic\_Err | |
| 1016 :Type: *double* | |
| 1017 :Dimensions: N/A | |
| 1018 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1019 range polarization sensitive elastic channels | |
| 1020 :Definition: ``double H_T_Far_Range_Systematic_Err`` | |
| 1021 | |
| 1022 This variable describes the systematic uncertainties | |
| 1023 corresponding to the variable *H\_T\_Far\_Range*. | |
| 1024 | |
| 1025 G\_R\_Far\_Range | |
| 1026 :Type: *double* | |
| 1027 :Dimensions: N/A | |
| 1028 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1029 range polarization sensitive elastic channels | |
| 1030 :Definition: ``double G_R_Far_Range`` | |
| 1031 | |
| 1032 G polarization cross-talk factor value corresponding to the | |
| 1033 far range polarization reflected channel. | |
| 1034 | |
| 1035 G\_R\_Far\_Range\_Statistical\_Err | |
| 1036 :Type: *double* | |
| 1037 :Dimensions: N/A | |
| 1038 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1039 range polarization sensitive elastic channels | |
| 1040 :Definition: ``double G_R_Far_Range_Statistical_Err`` | |
| 1041 | |
| 1042 This variable describes the statistical uncertainties | |
| 1043 corresponding to the variable *G\_R\_Far\_Range*. | |
| 1044 | |
| 1045 G\_R\_Far\_Range\_Systematic\_Err | |
| 1046 :Type: *double* | |
| 1047 :Dimensions: N/A | |
| 1048 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1049 range polarization sensitive elastic channels | |
| 1050 :Definition: ``double G_R_Far_Range_Systematic_Err`` | |
| 1051 | |
| 1052 This variable describes the systematic uncertainties | |
| 1053 corresponding to the variable *G\_R\_Far\_Range*. | |
| 1054 | |
| 1055 H\_R\_Far\_Range | |
| 1056 :Type: *double* | |
| 1057 :Dimensions: N/A | |
| 1058 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1059 range polarization sensitive elastic channels | |
| 1060 :Definition: ``double H_R_Far_Range`` | |
| 1061 | |
| 1062 H polarization cross-talk factor value corresponding to the | |
| 1063 far range polarization reflected channel. | |
| 1064 | |
| 1065 H\_R\_Far\_Range\_Statistical\_Err | |
| 1066 :Type: *double* | |
| 1067 :Dimensions: N/A | |
| 1068 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1069 range polarization sensitive elastic channels | |
| 1070 :Definition: ``double H_R_Far_Range_Statistical_Err`` | |
| 1071 | |
| 1072 This variable describes the statistical uncertainties | |
| 1073 corresponding to the variable *H\_R\_Far\_Range*. | |
| 1074 | |
| 1075 H\_R\_Far\_Range\_Systematic\_Err | |
| 1076 :Type: *double* | |
| 1077 :Dimensions: N/A | |
| 1078 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1079 range polarization sensitive elastic channels | |
| 1080 :Definition: ``double H_R_Far_Range_Systematic_Err`` | |
| 1081 | |
| 1082 This variable describes the systematic uncertainties | |
| 1083 corresponding to the variable *H\_R\_Far\_Range*. | |
| 1084 | |
| 1085 Polarization\_Channel\_Gain\_Factor\_Far\_Range | |
| 1086 :Type: *double* | |
| 1087 :Dimensions: N/A | |
| 1088 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1089 range polarization sensitive elastic channels | |
| 1090 :Definition: ``double Polarization_Channel_Gain_Factor_Far_Range`` | |
| 1091 | |
| 1092 This variable reports the value of the gain ratio of the | |
| 1093 far range reflected and transmitted polarization channels. | |
| 1094 | |
| 1095 Polarization\_Channel\_Gain\_Factor\_Far\_Range\_Statistical\_Err | |
| 1096 :Type: *double* | |
| 1097 :Dimensions: N/A | |
| 1098 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1099 range polarization sensitive elastic channels | |
| 1100 :Definition: ``double Polarization_Channel_Gain_Factor_Far_Range_Statistical_Err`` | |
| 1101 | |
| 1102 This variable describes the statistical uncertainties | |
| 1103 corresponding to the variable | |
| 1104 *Polarization\_Channel\_Gain\_Far\_Range\_Factor*. | |
| 1105 | |
| 1106 Polarization\_Channel\_Gain\_Factor\_Far\_Range\_Systematic\_Err | |
| 1107 :Type: *double* | |
| 1108 :Dimensions: N/A | |
| 1109 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1110 range polarization sensitive elastic channels | |
| 1111 :Definition: ``double Polarization_Channel_Gain_Factor_Far_Range_Systematic_Err`` | |
| 1112 | |
| 1113 This variable describes the systematic uncertainties | |
| 1114 corresponding to the variable *Polarization\_Channel\_Gain\_Factor\_Far\_Range*. | |
| 1115 | |
| 1116 Polarization\_Channel\_Gain\_Factor\_Correction\_Far\_Range | |
| 1117 :Type: *double* | |
| 1118 :Dimensions: N/A | |
| 1119 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1120 range polarization sensitive elastic channels | |
| 1121 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Far_Range`` | |
| 1122 | |
| 1123 This variable reports the value of the correction to the | |
| 1124 far range gain ratio of the reflected and transmitted polarization | |
| 1125 channels. | |
| 1126 | |
| 1127 Polarization\_Channel\_Gain\_Factor\_Correction\_Far\_Range\_Statistical\_Err | |
| 1128 :Type: *double* | |
| 1129 :Dimensions: N/A | |
| 1130 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1131 range polarization sensitive elastic channels | |
| 1132 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Far_Range_Statistical_Err`` | |
| 1133 | |
| 1134 This variable describes the statistical uncertainties | |
| 1135 corresponding to the variable *Polarization\_Channel\_Gain\_Factor\_Correction\_Far\_Range*. | |
| 1136 | |
| 1137 Polarization\_Channel\_Gain\_Factor\_Correction\_Far\_Range\_Systematic\_Err | |
| 1138 :Type: *double* | |
| 1139 :Dimensions: N/A | |
| 1140 :Location: Present if the Low Resolution SCC L1 Product involves far | |
| 1141 range polarization sensitive elastic channels | |
| 1142 :Definition: ``double Polarization_Channel_Gain_Factor_Correction_Far_Range_Systematic_Err`` | |
| 1143 | |
| 1144 This variable describes the systematic uncertainties | |
| 1145 corresponding to the variable | |
| 1146 *Polarization\_Channel\_Gain\_Factor\_Correction\_Far\_Range*. | |
| 1147 | |
| 1148 Depolarization\_Calibration\_Type | |
| 1149 :Type: *integer* | |
| 1150 :Dimensions: N/A | |
| 1151 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 1152 polarization sensitive elastic channels | |
| 1153 :Definition: ``int Depolarization_Calibration_Type`` | |
| 1154 | |
| 1155 This variable describes the type of depolarization | |
| 1156 calibration that has been performed. A value of 1 means automatic | |
| 1157 calibration made the the SCC, a value of 2 means manual calibration | |
| 1158 inserted into the SCC database. | |
| 1159 | |
| 1160 Molecular\_Linear\_Depolarization\_Ratio | |
| 1161 :Type: *double* | |
| 1162 :Dimensions: *scan\_angles,points* | |
| 1163 :Location: Present if the Low Resolution SCC L1 Product involves | |
| 1164 polarization sensitive elastic channels | |
| 1165 :Definition: ``double Molecular_Linear_Depolarization_Ratio(scan_angles, points)`` | |
| 1166 | |
| 1167 This variable report the value of molecular linear | |
| 1168 depolarization ration for at given scan angles and at given altitude | |
| 1169 (*points*). This profile is calculated on the base of the atmospheric | |
| 1170 data from standard models or radiosonding submitted by the user as | |
| 1171 separate file. | |
| 1172 | |
| 1173 The altitude scale at which each RCS within the time-series reported by | |
| 1174 the variables *elT, elTnr, elTfr, vrRN2, vrRN2nr, vrRN2fr, elPT, elPTnr, | |
| 1175 elPTfr, elPR, elPRnr, elPRfr*, refer to can be obtained as:: | |
| 1176 | |
| 1177 H(laser_pointing_angle_of_profiles(time),points) | |
| 1178 | |
| 1179 The total signal (:math:`I_{total}`) and the volume depolarization | |
| 1180 ratio (:math:`\delta`) can be calculated out of reflected (:math:`I_{R}`) and | |
| 1181 transmitted (:math:`I_{T}`) polarization component intensities using | |
| 1182 the following equations: | |
| 1183 | |
| 1184 .. math:: | |
| 1185 | |
| 1186 \delta^{*} = \frac{K}{\eta^{*}}\frac{I_R}{I_T} | |
| 1187 | |
| 1188 .. math:: | |
| 1189 | |
| 1190 \delta = \frac{\delta^{*} (G_T + H_T) - (G_R + H_R)}{(G_R - H_R) - \delta_{*}(G_T - H_T)} | |
| 1191 | |
| 1192 .. math:: | |
| 1193 | |
| 1194 I_{total} \propto \frac{\eta^{*}}{K} H_R I_T - H_T I_R | |
| 1195 | |
| 1196 where :math:`\eta^{*}` is the gain ratio of the reflected and transmitted | |
| 1197 polarization channels (variable *Polarization\_Channel\_Gain\_Factor*); | |
| 1198 :math:`K` is the correction to the gain ratio of the reflected and transmitted | |
| 1199 polarization channels (variable *Polarization\_Channel\_Gain\_Factor\_Correction*); | |
| 1200 :math:`I_{R}` is the intensity of the reflected polarization component (variable *elPR*); | |
| 1201 :math:`I_{T}` is the intensity of the transmitted polarization | |
| 1202 component (variable *elPT*); and :math:`G_{T}`, :math:`H_{T}`, | |
| 1203 :math:`G_{R}`, and :math:`H_{R}` are the polarization cross-talk | |
| 1204 parameters (variables *G\_T*, *H\_T*, *G\_R*, and *H\_R*). | |
| 1205 | |
| 1206 Low Resolution SCC L1 Product Format: global attributes | |
| 1207 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| 1208 | |
| 1209 In this section all the possible Low Resolution SCC L1 Product global | |
| 1210 attributes are reported. There are some global attributes that are | |
| 1211 mandatory and have to be present in all the Low Resolution SCC L1 | |
| 1212 Product files while there are others that have to be present only in | |
| 1213 specific cases. | |
| 1214 | |
| 1215 Location | |
| 1216 :Type: *string* | |
| 1217 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1218 | |
| 1219 The name of site where the measurements have been performed | |
| 1220 | |
| 1221 System | |
| 1222 :Type: *string* | |
| 1223 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1224 | |
| 1225 The name of the lidar system used to perform the | |
| 1226 measurements | |
| 1227 | |
| 1228 Latitude\_degrees\_north | |
| 1229 :Type: *double* | |
| 1230 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1231 | |
| 1232 The latitude (in degrees North) of the measurement site | |
| 1233 | |
| 1234 Longitude\_degrees\_east | |
| 1235 :Type: *double* | |
| 1236 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1237 | |
| 1238 The longitude (in degrees East) of the measurement site | |
| 1239 | |
| 1240 Altitude\_meter\_asl | |
| 1241 :Type: *double* | |
| 1242 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1243 | |
| 1244 The altitude (in m above see level) of the measurement site | |
| 1245 | |
| 1246 Measurement\_ID | |
| 1247 :Type: *string* | |
| 1248 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1249 | |
| 1250 Within the SCC all the measurement sessions is identified | |
| 1251 by a string called *Measurement\_ID* uniquely. This gobal attributes | |
| 1252 provides this string. | |
| 1253 | |
| 1254 Measurement\_Start\_Date | |
| 1255 :Type: *string* | |
| 1256 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1257 | |
| 1258 The start date of the measurements. The format in which | |
| 1259 this date is written is specified in the gobal attribute | |
| 1260 *Measurement\_Date\_Format*. | |
| 1261 | |
| 1262 Measurement\_Date\_Format | |
| 1263 :Type: *string* | |
| 1264 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1265 | |
| 1266 The format in which the global attribute | |
| 1267 *Measurement\_Start\_Date* is given. | |
| 1268 | |
| 1269 Measurement\_Start\_Time\_UT | |
| 1270 :Type: *string* | |
| 1271 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1272 | |
| 1273 The start time (UT) of the measurements. The format in | |
| 1274 which this time is written is specified in the global attribute | |
| 1275 *Measurement\_Time\_Format*. | |
| 1276 | |
| 1277 Measurement\_Time\_Format | |
| 1278 :Type: *string* | |
| 1279 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1280 | |
| 1281 The format in which the global attribute | |
| 1282 *Measurement\_Start\_Time\_U*\ T is given. | |
| 1283 | |
| 1284 Comments | |
| 1285 :Type: *string* | |
| 1286 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1287 | |
| 1288 This string can contain comments of the measurement session | |
| 1289 | |
| 1290 Overlap\_File\_Name | |
| 1291 :Type: *string* | |
| 1292 :Location: Included in all the Low Resolution SCC L1 Product files for | |
| 1293 which an overlap file has been submitted by the data originator. | |
| 1294 | |
| 1295 The name of the overlap file to use for overlap correction. | |
| 1296 | |
| 1297 LR\_File\_Name | |
| 1298 :Type: *string* | |
| 1299 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1300 corresponding to elastic only retrieval and for which an lidar ratio | |
| 1301 profile file has been submitted by the data originator. | |
| 1302 | |
| 1303 The name of the lidar ratio file containing the profile of | |
| 1304 particle lidar ratio values to use as input in the elastic only | |
| 1305 retrieval. | |
| 1306 | |
| 1307 SCCPreprocessingVersion | |
| 1308 :Type: *string* | |
| 1309 :Location: Included in all the Low Resolution SCC L1 Product files | |
| 1310 | |
| 1311 The version of SCC used to produce the current Low | |
| 1312 Resolution SCC L1 Product | |
| 1313 | |
| 1314 Low Resolution SCC L1 Product Filename | |
| 1315 -------------------------------------- | |
| 1316 | |
| 1317 The filename of the Low Resolution SCC L1 Products has the following | |
| 1318 format:: | |
| 1319 | |
| 1320 measurementid_prodid.nc | |
| 1321 | |
| 1322 The *measurementid* is a 12 characters alphanumeric string identifying | |
| 1323 the measurement session at which the product refers to. The | |
| 1324 *measurementid* (which is unique for a given measurement session) allows | |
| 1325 to fully trance the SCC analysis performed on the current product. This | |
| 1326 can be done because each measurement session is recorded in a SCC | |
| 1327 database using the same string. In the same database the measurement | |
| 1328 session is linked to the lidar configuration used to analyze the data | |
| 1329 (which is recorded and fully characterized in the SCC database providing | |
| 1330 all the channel details) and to a set of optical products to calculate. | |
| 1331 | |
| 1332 The *prodid* is a numeric string identifying the optical product that | |
| 1333 has to be calculated by SCC (in particular ELDA module) by applying the | |
| 1334 optical retrieval algorithm on the current pre-processed L1 product. | |
| 1335 | |
| 1336 Different product types are defined within the SCC. The contents of a | |
| 1337 Low Resolution SCC L1 product depends on the type of the product | |
| 1338 specified in the its filename by prodid string. In particular only the | |
| 1339 **Aerosol Related Variables **\ and\ ** Polarization related variables** | |
| 1340 specified in the section 2.2 can change depending on product type. In | |
| 1341 Tab. 3.1 are reported the product-type related variables for each | |
| 1342 optical product type. | |
| 1343 | |
| 1344 To link the *prodid* string with the corresponding product type the SCC | |
| 1345 database a proper query to the SCC database should be addressed. | |
| 1346 | |
| 1347 **Table 3.1:** Possible variables that can be found in the SCC L1 | |
| 1348 Products for each optical product type | |
| 1349 | |
| 1350 +--------------------------------------------------------------+---------------------------------------------------+ | |
| 1351 | Product type | Possible variables in Low Resolution L1 Product | | |
| 1352 +--------------------------------------------------------------+---------------------------------------------------+ | |
| 1353 | Extinction only | vrRN2, vrRN2nr, vrRN2fr | | |
| 1354 | | | | |
| 1355 | | vrRN2\_err, vrRN2nr\_err, vrRN2fr\_err | | |
| 1356 +--------------------------------------------------------------+---------------------------------------------------+ | |
| 1357 | Elastic Backscatter | elT, elTnr, elTfr | | |
| 1358 | | | | |
| 1359 | Elastic Backscatter + Particle Linear Depolarization Ratio | elT\_err, elTnr\_err, elTfr\_err | | |
| 1360 | | | | |
| 1361 | | elPR, elPRnr, elPRfr | | |
| 1362 | | | | |
| 1363 | | elPR\_err, elPRnr\_err, elPRfr\_err | | |
| 1364 | | | | |
| 1365 | | elPT, elPTnr, elPTfr | | |
| 1366 | | | | |
| 1367 | | elPT\_err, elPTnr\_err, elPTfr\_err | | |
| 1368 +--------------------------------------------------------------+---------------------------------------------------+ | |
| 1369 | Raman Backscatter | elT, elTnr, elTfr | | |
| 1370 | | | | |
| 1371 | Raman Backscatter + Particle Linear Depolarization Ratio | elT\_err, elTnr\_err, elTfr\_err | | |
| 1372 | | | | |
| 1373 | Lidar Ratio | elPR, elPRnr, elPRfr | | |
| 1374 | | | | |
| 1375 | | elPR\_err, elPRnr\_err, elPRfr\_err | | |
| 1376 | | | | |
| 1377 | | elPT, elPTnr, elPTfr | | |
| 1378 | | | | |
| 1379 | | elPT\_err, elPTnr\_err, elPTfr\_err | | |
| 1380 | | | | |
| 1381 | | vrRN2, vrRN2nr, vrRN2fr | | |
| 1382 | | | | |
| 1383 | | vrRN2\_err, vrRN2nr\_err, vrRN2fr\_err | | |
| 1384 +--------------------------------------------------------------+---------------------------------------------------+ |
