comparison: docs/faq/faq.rst
docs/faq/faq.rst
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| 84:32068c9ff7c7 | 85:9780f6e74200 |
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| 3 | 3 |
| 4 | 4 |
| 5 Using an ancillary file | 5 Using an ancillary file |
| 6 ~~~~~~~~~~~~~~~~~~~~~~~ | 6 ~~~~~~~~~~~~~~~~~~~~~~~ |
| 7 | 7 |
| 8 Q: I use the “Quick upload” to submit a measurement file together with an ancillary | 8 Q: I use the "Quick upload" to submit a measurement file together with an ancillary |
| 9 file. Will this ancillary file be used in the processing of my measurement. | 9 file. Will this ancillary file be used in the processing of my measurement. |
| 10 | 10 |
| 11 A: No. Which ancillary file is used when processing a measurement is defined in the | 11 A: No. Which ancillary file is used when processing a measurement is defined in the |
| 12 measurement netcdf file. If your new ancillary file is not mentioned in the measurement | 12 measurement netcdf file. If your new ancillary file is not mentioned in the measurement |
| 13 file, it will not be used. | 13 file, it will not be used. |
| 43 For example in cases with scattered low cumulus clouds. | 43 For example in cases with scattered low cumulus clouds. |
| 44 | 44 |
| 45 A: At moment you should provide cloud free data because the automatic cloud screening | 45 A: At moment you should provide cloud free data because the automatic cloud screening |
| 46 is not yet implemented in the SCC. We are working on this issue and hopefully the new | 46 is not yet implemented in the SCC. We are working on this issue and hopefully the new |
| 47 module will be implemented at the end of ACTRIS project. | 47 module will be implemented at the end of ACTRIS project. |
| 48 | |
| 49 | |
| 50 Minimum number of analog files to submit | |
| 51 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| 52 | |
| 53 Q: Is it possible to submit a single analog profile for processing? | |
| 54 | |
| 55 | |
| 56 A: It depepends on the type of product you ar trying to calculate. | |
| 57 | |
| 58 * If the product is a linear polarization calibration, it is possible to submit a timeseries containing | |
| 59 one single analog profile. This is allowed because some stations are performing depolarization calibration measurements using | |
| 60 single profiles. If the errors are present they will be taken into account for the calculation of the error on calibration constant. | |
| 61 If they are not the error on calibration constant is calculate as the standard deviation withing the calibration range. | |
| 62 | |
| 63 * If the product to calculate is NOT a linear polarization calibration, if the raw analog error have not been provided we need at | |
| 64 least 3 raw profile in order to compute the statistical error | |
| 48 | 65 |
| 49 | 66 |
| 50 High/low range channels | 67 High/low range channels |
| 51 ~~~~~~~~~~~~~~~~~~~~~~~ | 68 ~~~~~~~~~~~~~~~~~~~~~~~ |
| 52 Q: What is the definition of low range, ultra near range and high range channels? | 69 Q: What is the definition of low range, ultra near range and high range channels? |
| 55 A: There are no threshold values defined for the different range types. This information | 72 A: There are no threshold values defined for the different range types. This information |
| 56 is used only in the gluing procedures just to identify which channel should be taken | 73 is used only in the gluing procedures just to identify which channel should be taken |
| 57 as low range and which one as far range. If no gluing is applied by the SCC the range | 74 as low range and which one as far range. If no gluing is applied by the SCC the range |
| 58 id flags are not taken into account. | 75 id flags are not taken into account. |
| 59 | 76 |
| 60 Variable depolarization factor | |
| 61 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| 62 | |
| 63 Q: Due to changes in the settings of our lidar system, the depolarization factor can | |
| 64 change during the measurement. Is it necessary to provide one SCC-file for each settings | |
| 65 or is it possible to set the Depolarization_Factor variable time dependent? | |
| 66 | |
| 67 A: Unfortunately it is not possible to have time dependence on Depolarization_Factor variable. | |
| 68 So if this parameter changes you should provide different SCC files for each setting. | |
| 69 | 77 |
| 70 Extra netcdf parameters | 78 Extra netcdf parameters |
| 71 ~~~~~~~~~~~~~~~~~~~~~~~ | 79 ~~~~~~~~~~~~~~~~~~~~~~~ |
| 72 Q: Is it possible for documentation purposes to put own parameters in the SCC-NetCDF file? | 80 Q: Is it possible for documentation purposes to put own parameters in the SCC-NetCDF file? |
| 73 For example who created the file.... Are there any reasons against this? | 81 For example who created the file.... Are there any reasons against this? |
| 80 ~~~~~~~~~~~~~~ | 88 ~~~~~~~~~~~~~~ |
| 81 Q: Which NetCDF version is to use? NetCDF3, NetCDF3 Classic, NetCDF4, NetCDF4 Classic? | 89 Q: Which NetCDF version is to use? NetCDF3, NetCDF3 Classic, NetCDF4, NetCDF4 Classic? |
| 82 | 90 |
| 83 A: The NetCDF libraries 4.1.3 are used in all the SCC modules. So all the NetCDF formats you | 91 A: The NetCDF libraries 4.1.3 are used in all the SCC modules. So all the NetCDF formats you |
| 84 have indicated should be compatible with the SCC (we have tested NetCDF3 and NetCDF4). | 92 have indicated should be compatible with the SCC (we have tested NetCDF3 and NetCDF4). |
| 93 | |
| 85 | 94 |
| 86 Lidar ratio | 95 Lidar ratio |
| 87 ~~~~~~~~~~~ | 96 ~~~~~~~~~~~ |
| 88 Q: What are the values for the lidar ratio used in the SCC_DB? | 97 Q: What are the values for the lidar ratio used in the SCC_DB? |
| 89 | 98 |
| 114 | 123 |
| 115 Note: you cannot calculate a b532 file containing the Raman and elastic backscatters at the same time. | 124 Note: you cannot calculate a b532 file containing the Raman and elastic backscatters at the same time. |
| 116 The reason is that the 2 products will produce an output file with the same name (according to the EARLINET rules). | 125 The reason is that the 2 products will produce an output file with the same name (according to the EARLINET rules). |
| 117 Moreover in general, it makes no sense to calculate the elastic backscatter when you can calculate the Raman | 126 Moreover in general, it makes no sense to calculate the elastic backscatter when you can calculate the Raman |
| 118 one which usually is better. | 127 one which usually is better. |
| 128 | |
| 119 | 129 |
| 120 Filename conventions | 130 Filename conventions |
| 121 ~~~~~~~~~~~~~~~~~~~~ | 131 ~~~~~~~~~~~~~~~~~~~~ |
| 122 Q: What are the conventions for the filenames for the various files that need to be uploaded? | 132 Q: What are the conventions for the filenames for the various files that need to be uploaded? |
| 123 | 133 |
