S5P_L2_HCHO
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of S5P_L2_HCHO
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 |
pressure | double | {time, vertical} | [Pa] | pressure |
tropospheric_HCHO_column_number_density | float | {time} | [mol/m^2] | tropospheric HCHO column number density |
tropospheric_HCHO_column_number_density_uncertainty_random | float | {time} | [mol/m^2] | uncertainty of the tropospheric HCHO column number density due to random effects |
tropospheric_HCHO_column_number_density_uncertainty_systematic | float | {time} | [mol/m^2] | uncertainty of the tropospheric HCHO column number density due to systematic effects |
tropospheric_HCHO_column_number_density_validity | int8 | {time} | continuous quality descriptor, varying between 0 (no data) and 1 (full quality data) | |
HCHO_column_number_density_avk | float | {time, vertical} | [] | averaging kernel for the total HCHO column number density |
HCHO_volume_mixing_ratio_apriori | float | {time, vertical} | [ppv] | HCHO apriori profile in volume mixing ratios |
tropospheric_HCHO_column_number_density_amf | float | {time} | [] | tropospheric air mass factor |
tropospheric_HCHO_column_number_density_amf_uncertainty_random | float | {time} | [] | random part of the tropospheric air mass factor uncertainty |
tropospheric_HCHO_column_number_density_amf_uncertainty_systematic | float | {time} | [] | systematic part of the tropospheric air mass factor uncertainty |
HCHO_slant_column_number_density | float | {time} | [mol/m^2] | HCHO slant column number density |
HCHO_slant_column_number_density_uncertainty | float | {time} | [mol/m^2] | uncertainty of the HCHO slant column number density |
absorbing_aerosol_index | float | {time} | [] | aerosol index |
cloud_albedo | float | {time} | [] | cloud albedo |
cloud_albedo_uncertainty | float | {time} | [] | uncertainty of the cloud albedo |
cloud_fraction | float | {time} | [] | cloud fraction |
cloud_fraction_uncertainty | float | {time} | [] | uncertainty of the cloud fraction |
cloud_altitude | float | {time} | [km] | cloud altitude |
cloud_altitude_uncertainty | float | {time} | [km] | uncertainty of the cloud altitude |
cloud_pressure | float | {time} | [Pa] | cloud pressure |
cloud_pressure_uncertainty | float | {time} | [Pa] | uncertainty of the cloud pressure |
surface_albedo | float | {time} | [] | surface albedo |
surface_altitude | float | {time} | [m] | surface altitude |
surface_altitude_uncertainty | float | {time} | [m] | surface altitude precision |
surface_pressure | float | {time} | [Pa] | surface pressure |
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_HCHO
products.
option name | legal values | description |
---|---|---|
cloud_fraction | radiance | whether to ingest the cloud fraction (default) or the radiance cloud fraction (cloud_fraction=radiance) |
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) | |
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[] |
pressure | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/tm5_constant_a[], /PRODUCT/SUPPORT_DATA/INPUT_DATA/tm5_constant_b[], /PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_pressure[] |
description | pressure in Pa at layer k is derived from surface pressure in Pa as: tm5_constant_a[k] + tm5_constant_b[k] * surface_pressure[] | |
tropospheric_HCHO_column_number_density | path | /PRODUCT/formaldehyde_tropospheric_vertical_column[] |
tropospheric_HCHO_column_number_density_uncertainty_random | path | /PRODUCT/formaldehyde_tropospheric_vertical_column_precision[] |
tropospheric_HCHO_column_number_density_uncertainty_systematic | path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/formaldehyde_tropospheric_vertical_column_trueness[] |
tropospheric_HCHO_column_number_density_validity | path | /PRODUCT/qa_value |
HCHO_column_number_density_avk | path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/averaging_kernel[] |
HCHO_volume_mixing_ratio_apriori | available | optional |
condition | NRTI | |
path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/formaldehyde_profile_apriori[] | |
tropospheric_HCHO_column_number_density_amf | path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/formaldehyde_tropospheric_air_mass_factor[] |
tropospheric_HCHO_column_number_density_amf_uncertainty_random | path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/formaldehyde_tropospheric_air_mass_factor_precision[] |
tropospheric_HCHO_column_number_density_amf_uncertainty_systematic | path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/formaldehyde_tropospheric_air_mass_factor_trueness[] |
HCHO_slant_column_number_density | path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/formaldehyde_slant_column_corrected[] |
HCHO_slant_column_number_density_uncertainty | path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/formaldehyde_slant_column_corrected_trueness[] |
absorbing_aerosol_index | available | optional |
condition | OFFL | |
path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/aerosol_index_340_380 | |
cloud_albedo | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_albedo_crb |
cloud_albedo_uncertainty | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_albedo_crb_precision |
cloud_fraction | condition | cloud_fraction unset |
path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_fraction_crb[] | |
condition | cloud_fraction=radiance | |
path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/cloud_fraction_intensity_weighted[] | |
cloud_fraction_uncertainty | condition | cloud_fraction unset |
path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_fraction_crb_precision[] | |
condition | cloud_fraction=radiance | |
path | /PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/cloud_fraction_intensity_weighted_precision[] | |
cloud_altitude | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_height_crb |
cloud_altitude_uncertainty | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_height_crb_precision |
cloud_pressure | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_pressure_crb |
cloud_pressure_uncertainty | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_pressure_crb_precision |
surface_albedo | path | /PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_albedo |
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[] |