54 It is possible to define global attributes which are not related to a |
54 It is possible to define global attributes which are not related to a |
55 specific variable but to the whole file. |
55 specific variable but to the whole file. |
56 |
56 |
57 A NetCDF file is composed by four different section: |
57 A NetCDF file is composed by four different section: |
58 |
58 |
59 - dimensions |
59 dimensions |
60 |
|
61 this section contains all the dimensions used in the definition of |
60 this section contains all the dimensions used in the definition of |
62 all the variables included in the NetCDF file |
61 all the variables included in the NetCDF file |
63 |
62 |
64 - variables |
63 variables |
65 |
|
66 this section contains all the variables stored in the NetCDF file. |
64 this section contains all the variables stored in the NetCDF file. |
67 Each variable is defined as a multi-dimensional array of a specific |
65 Each variable is defined as a multi-dimensional array of a specific |
68 type and with all the dimensions defined in the dimensions section |
66 type and with all the dimensions defined in the dimensions section |
69 |
67 |
70 global attributes |
68 global attributes |
71 |
|
72 this section lists all the attributes referring to the whole file. As |
69 this section lists all the attributes referring to the whole file. As |
73 the variable the attributes (global or the one attached to a specific |
70 the variable the attributes (global or the one attached to a specific |
74 variable) can be of different type |
71 variable) can be of different type |
75 |
72 |
76 - data |
73 data |
77 |
|
78 in this section the data contained in each variable defined in |
74 in this section the data contained in each variable defined in |
79 variable section is stored. Attribute values (both global or related |
75 variable section is stored. Attribute values (both global or related |
80 to a specific variable) are not reported in data section but directly |
76 to a specific variable) are not reported in data section but directly |
81 in variable or global attribute sections. |
77 in variable or global attribute sections. |
82 |
78 |
125 Technical Variables |
121 Technical Variables |
126 ################### |
122 ################### |
127 |
123 |
128 altitude\_resolution |
124 altitude\_resolution |
129 :Type: *double* |
125 :Type: *double* |
130 :Number of dimensions: 1 |
|
131 :Dimensions: *scan\_angles* |
126 :Dimensions: *scan\_angles* |
132 :Location: Included in all the Low Resolution SCC L1 Product files |
127 :Location: Included in all the Low Resolution SCC L1 Product files |
133 :NetCDF definition: *double altitude\_resolution(scan\_angles)* |
128 :Definition: ``double altitude_resolution(scan_angles)`` |
134 :Description: this variable describes the altitude resolution |
129 This variable describes the altitude resolution |
135 corresponding to the RCS time-series reported in the file. It is needed |
130 corresponding to the RCS time-series reported in the file. It is needed |
136 to compute the vertical scale of the RCS corresponding to each scan |
131 to compute the vertical scale of the RCS corresponding to each scan |
137 angle which should be calculated as it follow: |
132 angle which should be calculated as it follow: |
138 |
133 |
139 where *z* is the altitude, ** is the scan angle value and *h* is the |
134 .. math:: |
140 value reported by *altitude\_resolution* variable. |
135 |
141 |
136 H(\alpha, z)= \Delta h(\alpha)\left(z + \frac{1}{2}\right) |
142 - Variable name: *range\_resolution* |
137 |
143 |
138 where *z* is the altitude, :math:`\alpha` is the scan angle value and :math:`\Delta h` is the |
144 :Type: *double* |
139 value reported by *altitude\_resolution* variable. |
145 :Number of dimensions: 1 |
140 |
146 :Dimensions: *scan\_angles* |
141 range\_resolution |
147 :Location: Included in all the Low Resolution SCC L1 Product files |
142 :Type: *double* |
148 :NetCDF definition: *double range\_resolution(scan\_angles)* |
143 :Dimensions: *scan\_angles* |
149 :Description: this variable describes the range resolution corresponding |
144 :Location: Included in all the Low Resolution SCC L1 Product files |
150 to the RCS time-series reported in the file. It is needed to compute the |
145 :Definition: ``double range_resolution(scan_angles)`` |
151 range scale of the RCS corresponding to each scan angle which should be |
146 This variable describes the range resolution corresponding |
152 calculated as it follow: |
147 to the RCS time-series reported in the file. It is needed to compute the |
153 |
148 range scale of the RCS corresponding to each scan angle which should be |
154 where *r* is the range, ** is the scan angle value and *r* is the |
149 calculated as it follow: |
155 value reported by *range\_resolution* variable. Altitude and range |
150 |
156 resolution are the same if the scan angle is zero (zenith acquisition). |
151 .. math:: |
|
152 |
|
153 R(\alpha, z)= \Delta r(\alpha)\left(r + \frac{1}{2}\right) |
|
154 |
|
155 where *r* is the range, :math:`\alpha` is the scan angle value and :math:`\Delta r` is the |
|
156 value reported by *range\_resolution* variable. Altitude and range |
|
157 resolution are the same if the scan angle is zero (zenith acquisition). |
157 |
158 |
158 - Variable name: *laser\_pointing\_angle* |
159 - Variable name: *laser\_pointing\_angle* |
159 |
160 |
160 :Type: *double* |
161 :Type: *double* |
161 :Number of dimensions: 1 |
162 :Number of dimensions: 1 |