S5P_L2_AER_LH
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of S5P_L2_AER_LH data.
field name |
type |
dimensions |
unit |
description |
|---|---|---|---|---|
scan_subindex |
int16 |
{time} |
pixel index (0-based) within the scanline |
|
datetime_start |
double |
{time} |
[seconds since 2010-01-01] |
start time of the measurement |
datetime_length |
double |
[s] |
duration of the measurement |
|
orbit_index |
int32 |
absolute orbit number |
||
validity |
int32 |
{time} |
processing quality flag |
|
latitude |
float |
{time} |
[degree_north] |
latitude of the ground pixel center (WGS84) |
longitude |
float |
{time} |
[degree_east] |
longitude of the ground pixel center (WGS84) |
latitude_bounds |
float |
{time, 4} |
[degree_north] |
latitudes of the ground pixel corners (WGS84) |
longitude_bounds |
float |
{time, 4} |
[degree_east] |
longitudes of the ground pixel corners (WGS84) |
sensor_latitude |
float |
{time} |
[degree_north] |
latitude of the geodetic sub-satellite point (WGS84) |
sensor_longitude |
float |
{time} |
[degree_east] |
longitude of the goedetic sub-satellite point (WGS84) |
sensor_altitude |
float |
{time} |
[m] |
altitude of the satellite with respect to the geodetic sub-satellite point (WGS84) |
solar_zenith_angle |
float |
{time} |
[degree] |
zenith angle of the Sun at the ground pixel location (WGS84); angle measured away from the vertical |
solar_azimuth_angle |
float |
{time} |
[degree] |
azimuth angle of the Sun at the ground pixel location (WGS84); angle measured East-of-North |
sensor_zenith_angle |
float |
{time} |
[degree] |
zenith angle of the satellite at the ground pixel location (WGS84); angle measured away from the vertical |
sensor_azimuth_angle |
float |
{time} |
[degree] |
azimuth angle of the satellite at the ground pixel location (WGS84); angle measured East-of-North |
surface_altitude |
float |
{time} |
[m] |
surface altitude |
surface_altitude_uncertainty |
float |
{time} |
[m] |
surface altitude precision |
surface_pressure |
float |
{time} |
[Pa] |
surface pressure |
surface_meridional_wind_velocity |
float |
{time} |
[m/s] |
northward wind |
surface_zonal_wind_velocity |
float |
{time} |
[m/s] |
eastward wind |
aerosol_height |
float |
{time} |
[m] |
altitude of center of aerosol layer |
aerosol_height_uncertainty |
float |
{time} |
[m] |
uncertainty of altitude of center of aerosol layer |
aerosol_height_validity |
int8 |
{time} |
continuous quality descriptor, varying between 0 (no data) and 100 (full quality data) |
|
aerosol_pressure |
float |
{time} |
[Pa] |
pressure at center of aerosol layer |
aerosol_pressure_uncertainty |
float |
{time} |
[Pa] |
uncertainty of pressure at center of aerosol layer |
aerosol_optical_depth |
float |
{time} |
[] |
aerosol optical thickness |
aerosol_optical_depth_uncertainty |
float |
{time} |
[] |
uncertainty of the aerosol optical thickness |
surface_albedo |
float |
{time} |
[] |
surface albedo |
surface_albedo_uncertainty |
float |
{time} |
[] |
uncertainty of the surface albedo |
cloud_fraction |
float |
{time} |
[] |
cloud fraction from the cloud product |
absorbing_aerosol_index |
float |
{time} |
[] |
aerosol index |
snow_ice_type |
int8 |
{time} |
surface snow/ice type; enumeration values: snow_free_land (0), sea_ice (1), permanent_ice (2), snow (3), ocean (4) |
|
sea_ice_fraction |
float |
{time} |
[] |
sea-ice concentration (as a fraction) |
index |
int32 |
{time} |
zero-based index of the sample within the source product |
Ingestion options
The table below lists the available ingestion options for S5P_L2_AER_LH products.
option name |
legal values |
description |
|---|---|---|
aerosol_pressure |
unclipped |
ingest the aerosol_mid_pressure that is clipped to the surface pressure (default) or the unclipped variant (aerosol_pressure=unclipped) |
surface_albedo |
772 |
whether to ingest the surface albedo at 758nm (default) or the surface alebedo at 772nm (surface_albedo=772); this option only has an effect for processor version >= 02.06.00 (for older products always the albedo at 758nm is ingested) |
Mapping description
The table below details where and how each variable was retrieved from the input product.
field name |
mapping description |
|
|---|---|---|
scan_subindex |
description |
the scanline and pixel dimensions are collapsed into a temporal dimension; the index of the pixel within the scanline is computed as the index on the temporal dimension modulo the number of scanlines |
datetime_start |
path |
/PRODUCT/time, /PRODUCT/delta_time[] |
description |
time converted from milliseconds since a reference time (given as seconds since 2010-01-01) to seconds since 2010-01-01 (using 86400 seconds per day); the time associated with a scanline is repeated for each pixel in the scanline |
|
datetime_length |
path |
/@time_coverage_resolution |
description |
the measurement length is parsed assuming the ISO 8601 ‘PT%(interval_seconds)fS’ format |
|
orbit_index |
path |
/@orbit |
validity |
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/processing_quality_flags[] |
description |
the uint32 data is cast to int32 |
|
latitude |
path |
/PRODUCT/latitude[] |
longitude |
path |
/PRODUCT/longitude[] |
latitude_bounds |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/latitude_bounds[] |
longitude_bounds |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/longitude_bounds[] |
sensor_latitude |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_latitude[] |
description |
the satellite latitude associated with a scanline is repeated for each pixel in the scanline |
|
sensor_longitude |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_longitude[] |
description |
the satellite longitude associated with a scanline is repeated for each pixel in the scanline |
|
sensor_altitude |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_altitude[] |
description |
the satellite altitude associated with a scanline is repeated for each pixel in the scanline |
|
solar_zenith_angle |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/solar_zenith_angle[] |
solar_azimuth_angle |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/solar_azimuth_angle[] |
sensor_zenith_angle |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/viewing_zenith_angle[] |
sensor_azimuth_angle |
path |
/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/viewing_azimuth_angle[] |
surface_altitude |
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_altitude[] |
surface_altitude_uncertainty |
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_altitude_precision[] |
surface_pressure |
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_pressure[] |
surface_meridional_wind_velocity |
available |
optional |
condition |
processor version >= 01.03.00 |
|
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/northward_wind[] |
|
surface_zonal_wind_velocity |
available |
optional |
condition |
processor version >= 01.03.00 |
|
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/eastward_wind[] |
|
aerosol_height |
path |
/PRODUCT/aerosol_mid_height[] |
aerosol_height_uncertainty |
path |
/PRODUCT/aerosol_mid_height_precision[] |
aerosol_height_validity |
path |
/PRODUCT/qa_value |
aerosol_pressure |
available |
optional |
condition |
aerosol_pressure unset |
|
path |
/PRODUCT/aerosol_mid_pressure[] |
|
condition |
aerosol_pressure=unclipped and processor version >= 02.00.00 |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/aerosol_mid_pressure_not_clipped[] |
|
aerosol_pressure_uncertainty |
path |
/PRODUCT/aerosol_mid_pressure_precision[] |
aerosol_optical_depth |
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/aerosol_optical_thickness[] |
aerosol_optical_depth_uncertainty |
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/aerosol_optical_thickness_precision[] |
surface_albedo |
available |
optional |
condition |
processor version >= 01.03.00 and processor version < 02.06.00 |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/surface_albedo[] |
|
condition |
surface_albedo unset and processor version >= 02.06.00 |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/surface_albedo[..,0] |
|
condition |
surface_albedo=772 and processor version >= 02.06.00 |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/surface_albedo[..,1] |
|
surface_albedo_uncertainty |
available |
optional |
condition |
surface_albedo unset and processor version >= 02.06.00 |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/surface_albedo_precision[..,0] |
|
condition |
surface_albedo=772 and processor version >= 02.06.00 |
|
path |
/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/surface_albedo_precision[..,1] |
|
cloud_fraction |
available |
optional |
condition |
processor version >= 01.03.00 |
|
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_fraction[] |
|
absorbing_aerosol_index |
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/aerosol_index_354_388 |
snow_ice_type |
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/snow_ice_flag[] |
description |
0: snow_free_land (0), 1-100: sea_ice (1), 101: permanent_ice (2), 103: snow (3), 255: ocean (4), other values map to -1 |
|
sea_ice_fraction |
path |
/PRODUCT/SUPPORT_DATA/INPUT_DATA/snow_ice_flag[] |
description |
if 1 <= snow_ice_flag <= 100 then snow_ice_flag/100.0 else 0.0 |
|