GOME_L2_ERSNTO

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of GOME_L2_ERSNTO data.

field name	type	dimensions	unit	description
index	int32	{time}		zero-based index of the sample within the source product
datetime	double	{time}	seconds since 2000-01-01	time of the measurement
longitude	double	{time}	degree_east	longitude of the measurement
latitude	double	{time}	degree_north	latitude of the measurement
longitude_bounds	double	{time, 4}	degree_east	corner longitudes of the measurement
latitude_bounds	double	{time, 4}	degree_north	corner latitudes of the measurement
instrument_solar_zenith_angle	double	{time}	degree	solar zenith angle at the instrument
instrument_viewing_zenith_angle	double	{time}	degree	viewing zenith angle at the instrument
instrument_relative_azimuth_angle	double	{time}	degree	relative azimuth angle at the instrument
toa_solar_zenith_angle	double	{time}	degree	solar zenith angle at top of atmosphere
toa_viewing_zenith_angle	double	{time}	degree	viewing zenith angle at top of atmosphere
toa_relative_azimuth_angle	double	{time}	degree	relative azimuth angle at top of atmosphere
BrO_column_number_density	double	{time}	mol/cm^2	BrO column number density
BrO_column_number_density_stdev	double	{time}	mol/cm^2	uncertainty of the BrO column number density
H2O_column_mass_density	double	{time}	kg/m^2	H2O column mass density
H2O_column_mass_density_stdev	double	{time}	kg/m^2	uncertainty of the H2O column mass density
HCHO_column_number_density	double	{time}	mol/cm^2	HCHO column number density
HCHO_column_number_density_stdev	double	{time}	mol/cm^2	uncertainty of the HCHO column number density
NO2_column_number_density	double	{time}	mol/cm^2	NO2 column number density
NO2_column_number_density_stdev	double	{time}	mol/cm^2	uncertainty of the NO2 column number density
tropospheric_NO2_column_number_density	double	{time}	mol/cm^2	tropospheric NO2 column number density
O3_column_number_density	double	{time}	DU	O3 column number density
O3_column_number_density_stdev	double	{time}	DU	uncertainty of the O3 column number density
OClO_column_number_density	double	{time}	mol/cm^2	OClO column number density
OClO_column_number_density_stdev	double	{time}	mol/cm^2	uncertainty of the OClO column number density
SO2_column_number_density	double	{time}	DU	SO2 column number density
SO2_column_number_density_stdev	double	{time}	DU	uncertainty of the SO2 column number density
BrO_column_number_density_amf	double	{time}	1	BrO air mass factor
BrO_column_number_density_amf_stdev	double	{time}	1	uncertainty of the BrO air mass factor
H2O_column_number_density_amf	double	{time}	1	H2O air mass factor
H2O_column_number_density_amf_stdev	double	{time}	1	uncertainty of the H2O air mass factor
HCHO_column_number_density_amf	double	{time}	1	HCHO air mass factor
HCHO_column_number_density_amf_stdev	double	{time}	1	uncertainty of the HCHO air mass factor
NO2_column_number_density_amf	double	{time}	1	NO2 air mass factor
NO2_column_number_density_amf_stdev	double	{time}	1	uncertainty of the NO2 air mass factor
tropospheric_NO2_column_number_density_amf	double	{time}	1	tropospheric NO2 air mass factor
tropospheric_NO2_column_number_density_amf_stdev	double	{time}	1	uncertainty of the tropospheric NO2 air mass factor
O3_column_number_density_amf	double	{time}	1	O3 air mass factor
O3_column_number_density_amf_stdev	double	{time}	1	uncertainty of the O3 air mass factor
OClO_column_number_density_amf	double	{time}	1	OClO air mass factor
OClO_column_number_density_amf_stdev	double	{time}	1	uncertainty of the OClO air mass factor
SO2_column_number_density_amf	double	{time}	1	SO2 air mass factor
SO2_column_number_density_amf_stdev	double	{time}	1	uncertainty of the SO2 air mass factor
cloud_fraction	double	{time}	1	cloud fraction
cloud_fraction_stdev	double	{time}	1	uncertainty of the cloud fraction
cloud_top_pressure	double	{time}	mbar	cloud top pressure
cloud_top_pressure_stdev	double	{time}	mbar	uncertainty of the cloud top pressure
cloud_top_height	double	{time}	km	cloud top height
cloud_top_height_stdev	double	{time}	km	uncertainty of the cloud top height
cloud_top_albedo	double	{time}	1	cloud top albedo
cloud_top_albedo_stdev	double	{time}	1	uncertainty of the cloud top albedo
cloud_optical_thickness	double	{time}	1	cloud optical thickness
cloud_optical_thickness_stdev	double	{time}	1	uncertainty of the cloud optical thickness
absorbing_aerosol_index	double	{time}	1	absorbing aerosol index
scan_subset_counter	int8	{time}		the relative index (0-3) of this measurement within a scan (forward + backward)
scan_direction	string	{time}		scan direction for each measurement: ‘forward’ or ‘backward’

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[]/Day, /GEOLOCATION/Time[]/MillisecondOfDay
datetime	description	the time values are converted to seconds since 2000-01-01 00:00:00 using time = (Day - 1577836800) * 86400 + MillisecondOfDay / 1000
longitude	path	/GEOLOCATION/LongitudeCentre[]
latitude	path	/GEOLOCATION/LatitudeCentre[]
longitude_bounds	path	/GEOLOCATION/LongitudeA[], /GEOLOCATION/LongitudeB[], /GEOLOCATION/LongitudeC[], /GEOLOCATION/LongitudeD[]
longitude_bounds	description	the corner coordinates are re-arranged in the order B-D-C-A
latitude_bounds	path	/GEOLOCATION/LatitudeA[], /GEOLOCATION/LatitudeB[], /GEOLOCATION/LatitudeC[], /GEOLOCATION/LatitudeD[]
latitude_bounds	description	the corner coordinates are re-arranged in the order B-D-C-A
instrument_solar_zenith_angle	path	/GEOLOCATION/SolarZenithAngleSatCentre[]
instrument_viewing_zenith_angle	path	/GEOLOCATION/LineOfSightZenithAngleSatCentre[]
instrument_relative_azimuth_angle	path	/GEOLOCATION/RelativeAzimuthSatCentre[]
toa_solar_zenith_angle	path	/GEOLOCATION/SolarZenithAngleCentre[]
toa_viewing_zenith_angle	path	/GEOLOCATION/LineOfSightZenithAngleCentre[]
toa_relative_azimuth_angle	path	/GEOLOCATION/RelativeAzimuthCentre[]
BrO_column_number_density	available	optional
BrO_column_number_density	path	/TOTAL_COLUMNS/BrO[]
BrO_column_number_density_stdev	available	optional
	path	/TOTAL_COLUMNS/BrO_Error[], /TOTAL_COLUMNS/BrO[]
	description	derived from the relative error in percent as: BrO_Error[] * 0.01 * BrO[]
H2O_column_mass_density	available	optional
H2O_column_mass_density	path	/TOTAL_COLUMNS/H2O[]
H2O_column_mass_density_stdev	available	optional
	path	/TOTAL_COLUMNS/H2O_Error[], /TOTAL_COLUMNS/H2O[]
	description	derived from the relative error in percent as: H2O_Error[] * 0.01 * H2O[]
HCHO_column_number_density	available	optional
HCHO_column_number_density	path	/TOTAL_COLUMNS/HCHO[]
HCHO_column_number_density_stdev	available	optional
	path	/TOTAL_COLUMNS/HCHO_Error[], /TOTAL_COLUMNS/HCHO[]
	description	derived from the relative error in percent as: HCHO_Error[] * 0.01 * HCHO[]
NO2_column_number_density	available	optional
	condition	corrected_no2_column=true
	path	/TOTAL_COLUMNS/NO2_Corr[]
	condition	corrected_no2_column=false
	path	/TOTAL_COLUMNS/NO2[]
NO2_column_number_density_stdev	available	optional
	condition	corrected_no2_column=true
	description	uncertainty information unavailable; this variable will not be present in the ingested product
	condition	corrected_no2_column=false
	path	/TOTAL_COLUMNS/NO2_Error[], /TOTAL_COLUMNS/NO2[]
	description	derived from the relative error in percent as: NO2_Error[] * 0.01 * NO2[]
tropospheric_NO2_column_number_density	available	optional
	condition	V1 product
	path	/TOTAL_COLUMNS/NO2_Trop[]
	condition	V2 product
	path	/TOTAL_COLUMNS/NO2Tropo[]
O3_column_number_density	available	optional
O3_column_number_density	path	/TOTAL_COLUMNS/O3[]
O3_column_number_density_stdev	available	optional
	path	/TOTAL_COLUMNS/O3_Error[], /TOTAL_COLUMNS/O3[]
	description	derived from the relative error in percent as: O3_Error[] * 0.01 * O3[]
OClO_column_number_density	available	optional
OClO_column_number_density	path	/TOTAL_COLUMNS/OClO[]
OClO_column_number_density_stdev	available	optional
	path	/TOTAL_COLUMNS/OClO_Error[], /TOTAL_COLUMNS/OClO[]
	description	derived from the relative error in percent as: OClO_Error[] * 0.01 * OClO[]
SO2_column_number_density	available	optional
SO2_column_number_density	path	/TOTAL_COLUMNS/SO2[]
SO2_column_number_density_stdev	available	optional
	path	/TOTAL_COLUMNS/SO2_Error[], /TOTAL_COLUMNS/SO2[]
	description	derived from the relative error in percent as: SO2_Error[] * 0.01 * SO2[]
BrO_column_number_density_amf	available	optional
	path	/DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	window is the index in MainSpecies[] that has the value ‘BrO’
BrO_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/AMFTotal_Error[,window], /DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	derived from the relative error in percent as: AMFTotal_Error[,window] * 0.01 * AMFTotal[,window]; window is the index in MainSpecies[] that has the value ‘BrO’
H2O_column_number_density_amf	available	optional
	path	/DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	window is the index in MainSpecies[] that has the value ‘H2O’
H2O_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/AMFTotal_Error[,window], /DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	derived from the relative error in percent as: AMFTotal_Error[,window] * 0.01 * AMFTotal[,window]; window is the index in MainSpecies[] that has the value ‘H2O’
HCHO_column_number_density_amf	available	optional
	path	/DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	window is the index in MainSpecies[] that has the value ‘HCHO’
HCHO_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/AMFTotal_Error[,window], /DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	derived from the relative error in percent as: AMFTotal_Error[,window] * 0.01 * AMFTotal[,window]; window is the index in MainSpecies[] that has the value ‘HCHO’
NO2_column_number_density_amf	available	optional
	path	/DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	window is the index in MainSpecies[] that has the value ‘NO2’
NO2_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/AMFTotal_Error[,window], /DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	derived from the relative error in percent as: AMFTotal_Error[,window] * 0.01 * AMFTotal[,window]; window is the index in MainSpecies[] that has the value ‘NO2’
tropospheric_NO2_column_number_density_amf	available	optional
tropospheric_NO2_column_number_density_amf	path	/DETAILED_RESULTS/NO2/AMFTropo[]
tropospheric_NO2_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/NO2/AMFTropo_Error[], /DETAILED_RESULTS/NO2/AMFTropo[]
	description	derived from the relative error in percent as: AMFTropo_Error[] * 0.01 * AMFTropo[]
O3_column_number_density_amf	available	optional
	path	/DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	window is the index in MainSpecies[] that has the value ‘O3’
O3_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/AMFTotal_Error[,window], /DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	derived from the relative error in percent as: AMFTotal_Error[,window] * 0.01 * AMFTotal[,window]; window is the index in MainSpecies[] that has the value ‘O3’
OClO_column_number_density_amf	available	optional
	path	/DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	window is the index in MainSpecies[] that has the value ‘OClO’
OClO_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/AMFTotal_Error[,window], /DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	derived from the relative error in percent as: AMFTotal_Error[,window] * 0.01 * AMFTotal[,window]; window is the index in MainSpecies[] that has the value ‘OClO’
SO2_column_number_density_amf	available	optional
	path	/DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	window is the index in MainSpecies[] that has the value ‘SO2’
SO2_column_number_density_amf_stdev	available	optional
	path	/DETAILED_RESULTS/AMFTotal_Error[,window], /DETAILED_RESULTS/AMFTotal[,window], /META_DATA/MainSpecies[]
	description	derived from the relative error in percent as: AMFTotal_Error[,window] * 0.01 * AMFTotal[,window]; window is the index in MainSpecies[] that has the value ‘SO2’
cloud_fraction	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudFraction[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudFraction[]
cloud_fraction_stdev	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudFraction_Error[], /DETAILED_RESULTS/CloudFraction[]
	description	derived from the relative error in percent as: CloudFraction_Error[] * 0.01 * CloudFraction[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudFraction_Error[], /CLOUD_PROPERTIES/CloudFraction[]
	description	derived from the relative error in percent as: CloudFraction_Error[] * 0.01 * CloudFraction[]
cloud_top_pressure	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudTopPressure[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudTopPressure[]
cloud_top_pressure_stdev	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudTopPressure_Error[], /DETAILED_RESULTS/CloudTopPressure[]
	description	derived from the relative error in percent as: CloudTopPressure_Error[] * 0.01 * CloudTopPressure[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudTopPressure_Error[], /CLOUD_PROPERTIES/CloudTopPressure[]
	description	derived from the relative error in percent as: CloudTopPressure_Error[] * 0.01 * CloudTopPressure[]
cloud_top_height	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudTopHeight[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudTopHeight[]
cloud_top_height_stdev	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudTopHeight_Error[], /DETAILED_RESULTS/CloudTopHeight[]
	description	derived from the relative error in percent as: CloudTopHeight_Error[] * 0.01 * CloudTopHeight[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudTopHeight_Error[], /CLOUD_PROPERTIES/CloudTopHeight[]
	description	derived from the relative error in percent as: CloudTopHeight_Error[] * 0.01 * CloudTopHeight[]
cloud_top_albedo	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudTopAlbedo[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudTopAlbedo[]
cloud_top_albedo_stdev	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudTopAlbedo_Error[], /DETAILED_RESULTS/CloudTopAlbedo[]
	description	derived from the relative error in percent as: CloudTopAlbedo_Error[] * 0.01 * CloudTopAlbedo[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudTopAlbedo_Error[], /CLOUD_PROPERTIES/CloudTopAlbedo[]
	description	derived from the relative error in percent as: CloudTopAlbedo_Error[] * 0.01 * CloudTopAlbedo[]
cloud_optical_thickness	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudOpticalThickness[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudOpticalThickness[]
cloud_optical_thickness_stdev	available	optional
	condition	V1 product
	path	/DETAILED_RESULTS/CloudOpticalThickness_Error[], /DETAILED_RESULTS/CloudOpticalThickness[]
	description	derived from the relative error in percent as: CloudOpticalThickness_Error[] * 0.01 * CloudOpticalThickness[]
	condition	V2 product
	path	/CLOUD_PROPERTIES/CloudOpticalThickness_Error[], /CLOUD_PROPERTIES/CloudOpticalThickness[]
	description	derived from the relative error in percent as: CloudOpticalThickness_Error[] * 0.01 * CloudOpticalThickness[]
absorbing_aerosol_index	available	optional
absorbing_aerosol_index	path	/DETAILED_RESULTS/AAI[]
scan_subset_counter	path	/GEOLOCATION/IndexInScan[]
scan_direction	path	/GEOLOCATION/IndexInScan[]
scan_direction	description	the scan direction is based on IndexInScan[] (0-2 = forward, 3 = backward)