GEOMS-TE-FTIR-001-NO2

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of GEOMS-TE-FTIR-001-NO2 data.

field name	type	dimensions	unit	description
sensor_name	string			name of the sensor
location_name	string			name of the site at which the sensor is located
measurement_mode	string			‘solar’ or ‘lunar’ measurement
sensor_latitude	double		[degree_north]	latitude of the sensor
sensor_longitude	double		[degree_east]	longitude of the sensor
sensor_altitude	double		[km]	altitude of the sensor
datetime	double	{time}	[days since 2000-01-01]	time of the measurement
datetime_length	double	{time}	[s]	duration of the measurement
NO2_column_number_density	double	{time}	[molec/m2]	total NO2 vertical column
NO2_column_number_density_apriori	double	{time}	[molec/m2]	a priori total NO2 vertical column
NO2_column_number_density_avk	double	{time, vertical}	[]	averaging kernel for the total NO2 vertical column
NO2_column_number_density_uncertainty_random	double	{time}	[molec/m2]	random uncertainty of the total NO2 vertical column
NO2_column_number_density_uncertainty_systematic	double	{time}	[molec/m2]	systematic uncertainty of the total NO2 vertical column
H2O_column_number_density	double	{time}	[molec/m2]	total H2O vertical column
NO2_volume_mixing_ratio_dry_air	double	{time, vertical}	[ppmv]	NO2 volume mixing ratio
NO2_volume_mixing_ratio_dry_air_apriori	double	{time, vertical}	[ppmv]	a priori NO2 volume mixing ratio
NO2_volume_mixing_ratio_dry_air_avk	double	{time, vertical, vertical}	[]	averaging kernel for the NO2 volume mixing ratio
NO2_volume_mixing_ratio_dry_air_covariance	double	{time, vertical, vertical}	[(ppmv)2]	covariance of the NO2 volume mixing ratio
NO2_volume_mixing_ratio_dry_air_uncertainty_random	double	{time, vertical}	[ppmv]	random uncertainty of the NO2 volume mixing ratio
NO2_volume_mixing_ratio_dry_air_uncertainty_systematic	double	{time, vertical}	[ppmv]	systematic uncertainty of the NO2 volume mixing ratio
H2O_volume_mixing_ratio_dry_air	double	{time, vertical}	[ppmv]	H2O volume mixing ratio
altitude	double	{time, vertical}	[km]	retrieval effective altitude
altitude_bounds	double	{time, vertical, 2}	[km]	lower and upper boundaries of the height layers
pressure	double	{time, vertical}	[hPa]	independent pressure profile
temperature	double	{time, vertical}	[K]	independent temperature profile
surface_pressure	double	{time}	[hPa]	independent surface pressure
surface_temperature	double	{time}	[K]	independent surface temperature
solar_azimuth_angle	double	{time}	[degree]	solar azimuth angle
solar_zenith_angle	double	{time}	[degree]	solar zenith angle
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
sensor_name	path	/@DATA.SOURCE
location_name	path	/@DATA.LOCATION
measurement_mode	condition	determined from ‘variable mode’ part of variable names
sensor_latitude	path	/LATITUDE.INSTRUMENT
sensor_longitude	path	/LONGITUDE.INSTRUMENT
sensor_altitude	path	/ALTITUDE.INSTRUMENT
datetime	path	/DATETIME
datetime_length	available	optional
	path	/INTEGRATION.TIME
NO2_column_number_density	condition	solar measurement
	path	/NO2.COLUMN_ABSORPTION.SOLAR
	description	unit is converted to molec/m2
	condition	lunar measurement
	path	/NO2.COLUMN_ABSORPTION.LUNAR
	description	unit is converted to molec/m2
NO2_column_number_density_apriori	condition	solar measurement
	path	/NO2.COLUMN_ABSORPTION.SOLAR_APRIORI
	description	unit is converted to molec/m2
	condition	lunar measurement
	path	/NO2.COLUMN_ABSORPTION.LUNAR_APRIORI
	description	unit is converted to molec/m2
NO2_column_number_density_avk	condition	solar measurement
	path	/NO2.COLUMN_ABSORPTION.SOLAR_AVK
	description	the vertical axis is re-ordered from surface to top-of-atmosphere
	condition	lunar measurement
	path	/NO2.COLUMN_ABSORPTION.LUNAR_AVK
	description	the vertical axis is re-ordered from surface to top-of-atmosphere
NO2_column_number_density_uncertainty_random	condition	solar measurement
	path	/NO2.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM
	description	unit is converted to molec/m2
	condition	lunar measurement
	path	/NO2.COLUMN_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM
	description	unit is converted to molec/m2
NO2_column_number_density_uncertainty_systematic	condition	solar measurement
	path	/NO2.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC
	description	unit is converted to molec/m2
	condition	lunar measurement
	path	/NO2.COLUMN_ABSORPTION.LUNAR_UNCERTAINTY.SYSTEMATIC
	description	unit is converted to molec/m2
H2O_column_number_density	condition	solar measurement
	path	/H2O.COLUMN_ABSORPTION.SOLAR
	description	unit is converted to molec/m2
	condition	lunar measurement
	path	/H2O.COLUMN_ABSORPTION.LUNAR
	description	unit is converted to molec/m2
NO2_volume_mixing_ratio_dry_air	available	optional
	condition	solar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.SOLAR
	description	unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere
	condition	lunar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.LUNAR
	description	unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere
NO2_volume_mixing_ratio_dry_air_apriori	available	optional
	condition	solar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.SOLAR_APRIORI
	description	unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere
	condition	lunar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.LUNAR_APRIORI
	description	unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere
NO2_volume_mixing_ratio_dry_air_avk	available	optional
	condition	solar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.SOLAR_AVK
	description	the vertical axis is re-ordered from surface to top-of-atmosphere
	condition	lunar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.LUNAR_AVK
	description	the vertical axis is re-ordered from surface to top-of-atmosphere
NO2_volume_mixing_ratio_dry_air_covariance	available	optional
	condition	solar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM
	description	unit is converted to (ppmv)2; the vertical axis is re-ordered from surface to top-of-atmosphere
	condition	lunar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM
	description	unit is converted to (ppmv)2; the vertical axis is re-ordered from surface to top-of-atmosphere
NO2_volume_mixing_ratio_dry_air_uncertainty_random	available	optional
	condition	solar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM
	description	the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv
	condition	lunar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM
	description	the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv
NO2_volume_mixing_ratio_dry_air_uncertainty_systematic	available	optional
	condition	solar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC
	description	the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv
	condition	lunar measurement
	path	/NO2.MIXING.RATIO_ABSORPTION.LUNAR_UNCERTAINTY.SYSTEMATIC
	description	the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv
H2O_volume_mixing_ratio_dry_air	condition	solar measurement
	path	/H2O.MIXING.RATIO_ABSORPTION.SOLAR
	description	unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere
	condition	lunar measurement
	path	/H2O.MIXING.RATIO_ABSORPTION.LUNAR
	description	unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere
altitude	path	/ALTITUDE
	description	the vertical axis is re-ordered from surface to top-of-atmosphere
altitude_bounds	path	/ALTITUDE.BOUNDS
	description	lower and upper boundaries of the height layers
pressure	path	/PRESSURE_INDEPENDENT
	description	independent pressure profile
temperature	path	/TEMPERATURE_INDEPENDENT
	description	independent temperature profile
surface_pressure	path	/SURFACE.PRESSURE_INDEPENDENT
surface_temperature	path	/SURFACE.TEMPERATURE_INDEPENDENT
solar_azimuth_angle	condition	solar measurement
	path	/ANGLE.SOLAR_AZIMUTH
	condition	lunar measurement
	path	/ANGLE.LUNAR_AZIMUTH
solar_zenith_angle	condition	solar measurement
	path	/ANGLE.SOLAR_ZENITH.ASTRONOMICAL
	condition	lunar measurement
	path	/ANGLE.LUNAR_ZENITH.ASTRONOMICAL