GOME2_L2_O3MOHP
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of GOME2_L2_O3MOHP data.
| field name | type | dimensions | unit | description | 
|---|---|---|---|---|
| datetime | double | {time} | [seconds since 2000-01-01] | time of the measurement | 
| scan_subindex | int8 | {time} | the relative index of this measurement within a scan | |
| longitude | float | {time} | [degree_east] | longitude of the measurement | 
| latitude | float | {time} | [degree_north] | latitude of the measurement | 
| longitude_bounds | float | {time, 4} | [degree_east] | corner longitudes of the measurement | 
| latitude_bounds | float | {time, 4} | [degree_north] | corner latitudes of the measurement | 
| solar_zenith_angle | float | {time} | [degree] | solar zenith angle | 
| solar_azimuth_angle | float | {time} | [degree] | solar azimuth angle | 
| viewing_zenith_angle | float | {time} | [degree] | viewing zenith angle at top of atmosphere | 
| viewing_azimuth_angle | float | {time} | [degree] | relative azimuth angle at top of atmosphere | 
| scene_albedo | float | {time} | [] | fitted albedo | 
| altitude_bounds | float | {time, vertical, 2} | [km] | altitude layer boundaries | 
| pressure_bounds | float | {time, vertical, 2} | [hPa] | pressure layer boundaries | 
| tropopause_pressure | float | {time} | [hPa] | pressure level of the troposphere/stratosphere boundary location | 
| O3_column_number_density | float | {time, vertical} | [DU] | o3 partial column density profile | 
| O3_column_number_density_apriori | float | {time, vertical} | [DU] | apriori o3 partial column density profile | 
| O3_column_number_density_avk | float | {time, vertical, vertical} | [] | o3 partial column density averaging kernel | 
| O3_column_number_density_covariance | float | {time, vertical, vertical} | [DU] | o3 partial column density covariance matrix | 
| validity | int8 | {time} | processing quality flags; bit 0: no retrieval performed; bit 1: convergence not reached; bit 2: out of bound retrieval values; bit 3: too high chi square values | |
| index | int32 | {time} | zero-based index of the sample within the source product | 
Mapping description
The table below details where and how each variable was retrieved from the input product.
| field name | mapping description | |
|---|---|---|
| datetime | path | /GEOLOCATION/Time[] | 
| description | the time values are converted from a string to seconds since 2000-01-01 00:00:00 | |
| scan_subindex | path | /GEOLOCATION/IndexInScan[] | 
| description | index is reduced by 1 to make it a zero-based index | |
| longitude | path | /GEOLOCATION/LongitudeCenter[] | 
| latitude | path | /GEOLOCATION/LatitudeCenter[] | 
| longitude_bounds | path | /GEOLOCATION/Longitude_A[], /GEOLOCATION/Longitude_B[], /GEOLOCATION/Longitude_C[], /GEOLOCATION/Longitude_D[] | 
| description | the corner coordinates are re-arranged in the order B-D-C-A | |
| latitude_bounds | path | /GEOLOCATION/Latitude_A[], /GEOLOCATION/Latitude_B[], /GEOLOCATION/Latitude_C[], /GEOLOCATION/Latitude_D[] | 
| description | the corner coordinates are re-arranged in the order B-D-C-A | |
| solar_zenith_angle | path | /GEOLOCATION/SolarZenithAngle_F[] | 
| solar_azimuth_angle | path | /GEOLOCATION/SolarAzimuthAngle_F[] | 
| viewing_zenith_angle | path | /GEOLOCATION/LineOfSightZenithAngle_F[] | 
| viewing_azimuth_angle | path | /GEOLOCATION/LineOfSightAzimithAngle_F[] | 
| scene_albedo | path | /DATA/StateRetrieved[NOutputLayers,:] | 
| altitude_bounds | path | /DATA/AltitudeProfile | 
| description | the N+1 altitude layer boundaries are converted into [N,2] boundary values | |
| pressure_bounds | path | /DATA/OutputPressureGrid | 
| description | the N+1 pressure layer boundaries are converted into [N,2] boundary values | |
| tropopause_pressure | path | /DATA/TropopausePressure | 
| description | pressure level of the troposphere/stratosphere boundary location | |
| O3_column_number_density | path | /DATA/StateRetrieved[0..NOutputLayers,:] | 
| O3_column_number_density_apriori | path | /DATA/Apriori[0..NOutputLayers,:] | 
| O3_column_number_density_avk | path | /DATA/AveragingKernel[0..NOutputLayers,0..NOutputLayers,:] | 
| O3_column_number_density_covariance | path | /DATA/ErrorCovarianceTotal[0..NOutputLayers,0..NOutputLayers,:] | 
| validity | path | /DATA/QualityProcessing | 
| description | bit 0: set to 1 if QualityProcessing[0,:] < 0, bit 1: set to 1 if QualityProcessing[1,:] == 0]bit 2: set to 1 if QualityProcessing[4,:] == 1, bit 3: set to 1 if QualityProcessing[5,:] == 1 | |