GEOMS-TE-UVVIS-DOAS-DIRECTSUN-GAS-006-NO2

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of GEOMS-TE-UVVIS-DOAS-DIRECTSUN-GAS-006-NO2 data.

field name	type	dimensions	unit	description
index	int32	{time}		zero-based index of the sample within the source product
instrument_name	string			name of the instrument
site_name	string			name of the site at which the instrument is located
datetime	double	{time}	days since 2000-01-01	mean time of the measurement
datetime_start	double	{time}	days since 2000-01-01	start time of the measurement
datetime_stop	double	{time}	days since 2000-01-01	stop time of the measurement
instrument_latitude	double		degree_north	latitude of the instrument
instrument_longitude	double		degree_east	longitude of the measurement
instrument_altitude	double		m	altitude of the instrument relative to the location site
altitude	double	{time, vertical}	km	effictive retrieval altitude
pressure	double	{time, vertical}	hPa	independent pressure profile
temperature	double	{time, vertical}	K	independent temperature profile
altitude_bounds	double	{time, vertical, 2}	km	lower and upper boundaries of the height layers
solar_zenith_angle	double	{time}	deg	solar astronomical zenith angle
solar_azimuth_angle	double	{time}	deg	solar azimuth angle
viewing_azimith_angle	double	{time}	deg	viewing azimuth angle of the instrument
viewing_zenith_angle	double	{time}	deg	viewing zenith angle of the instrument
latitude	double	{time, vertical}	degree_north	latitude of effective air mass at each altitude
longitude	double	{time, vertical}	degree_east	longitude of effective air mass at each altitude
stratospheric_aerosol_optical_depth	double	{time}	1	total stratospheric aerosol optical depth user for the retrieval
NO2_column_number_density	double	{time}	Pmolec cm-2	NO2 column number density
NO2_column_number_density_stdev_random	double	{time, vertical}	Pmolec cm-2	random uncertainty of the NO2 column number density
NO2_column_number_density_stdev_systematic	double	{time, vertical}	Pmolec cm-2	systematic covariance of the NO2 column number density
NO2_column_number_density_apriori	double	{time, vertical}	Pmolec cm-2	a priori NO2 column number density
NO2_column_number_density_avk	double	{time, vertical}	1	averaging kernel for the NO2 column number density

Mapping description

The table below details where and how each variable was retrieved from the input product.

field name	mapping description
instrument_name	path	/@DATA.SOURCE
site_name	path	/@DATA.LOCATION
datetime	path	/DATETIME
datetime_start	path	/DATETIME.START
datetime_stop	path	/DATETIME.STOP
instrument_latitude	path	/LATITUDE.INSTRUMENT
instrument_longitude	path	/LONGITUDE.INSTRUMENT
instrument_altitude	path	/ALTITUDE.INSTRUMENT
altitude	path	/ALTITUDE
pressure	path	/PRESSURE_INDEPENDENT
temperature	path	/TEMPERATURE_INDEPENDENT
altitude_bounds	path	/ALTITUDE.BOUNDARIES
solar_zenith_angle	path	/ANGLE.SOLAR_ZENITH.ASTRONOMICAL
solar_azimuth_angle	path	/ANGLE.SOLAR_AZIMUTH
viewing_azimith_angle	path	/ANGLE.VIEW_AZIMUTH
viewing_zenith_angle	path	/ANGLE.VIEW_ZENITH
latitude	available	optional
	path	/LATITUDE
longitude	available	optional
	path	/LONGITUDE
stratospheric_aerosol_optical_depth	available	optional
	condition	AOD=modeled
	path	/AEROSOL.OPTICAL.DEPTH.STRATOSPHERIC_INDEPENDENT
	condition	AOD=measured
	path	/AEROSOL.OPTICAL.DEPTH.STRATOSPHERIC_SCATTER.SOLAR.ZENITH
NO2_column_number_density	path	/NO2.COLUMN.ABSORPTION.SOLAR
NO2_column_number_density_stdev_random	path	/NO2.COLUMN.ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.STANDARD
NO2_column_number_density_stdev_systematic	path	/NO2.COLUMN.ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.STANDARD
NO2_column_number_density_apriori	path	/NO2.COLUMN.PARTIAL_ABSORPTION.SOLAR_APRIORI
NO2_column_number_density_avk	path	/NO2.COLUMN_ABSORPTION.SOLAR_AVK