GOME2_L2_O3MNHP
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of GOME2_L2_O3MNHP 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 |
|