OCO_ACOS_LtCO2

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of OCO_ACOS_LtCO2 data.

field name	type	dimensions	unit	description
datetime	double	{time}	[seconds since 1970-01-01]	time of the measurement
latitude	double	{time}	[degree_north]	center latitude of the measurement
longitude	double	{time}	[degree_east]	center longitude of the measurement
surface_altitude	double	{time}	[m]	surface altitude
surface_pressure	double	{time}	[hPa]	retrieved surface pressure
pressure	double	{time, vertical}	[hPa]	pressure levels
sensor_azimuth_angle	double	{time}	[degree]	sensor azimuth angle
sensor_zenith_angle	double	{time}	[degree]	sensor zenith angle
solar_azimuth_angle	double	{time}	[degree]	solar azimuth angle
solar_zenith_angle	double	{time}	[degree]	solar zenith angle
CO2_column_volume_mixing_ratio_dry_air	double	{time}	[ppmv]	Column-averaged dry-air mole fraction of CO2 (includes bias correction)
CO2_column_volume_mixing_ratio_dry_air_uncertainty	double	{time}	[ppmv]	XCO2 posterior error
CO2_column_volume_mixing_ratio_dry_air_validity	int8	{time}		XCO2 simple quality bitflag
CO2_column_volume_mixing_ratio_dry_air_apriori	double	{time}	[ppmv]	XCO2 a-priori
CO2_column_volume_mixing_ratio_dry_avk	double	{time, vertical}	[ppmv/ppmv]	XCO2 column averaging kernel
CO2_volume_mixing_ratio_dry_air_apriori	double	{time, vertical}	[ppmv]	CO2 a-priori profile
validity	int8	{time}		XCO2 quality flag
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
datetime	path	/time[]
latitude	path	/latitude[]
longitude	path	/longitude[]
surface_altitude	path	/Sounding/altitude[]
surface_pressure	path	/Retrieval/psurf[]
pressure	path	/pressure_levels[]
	description	the vertical grid is inverted to make it ascending
sensor_azimuth_angle	path	/Sounding/sensor_azimuth_angle[]
sensor_zenith_angle	path	/sensor_zenith_angle[]
solar_azimuth_angle	path	/Sounding/solar_azimuth_angle[]
solar_zenith_angle	path	/solar_zenith_angle[]
CO2_column_volume_mixing_ratio_dry_air	path	/xco2[]
CO2_column_volume_mixing_ratio_dry_air_uncertainty	path	/xco2_uncertainty[]
CO2_column_volume_mixing_ratio_dry_air_validity	available	optional
	condition	version>9
	path	/xco2_qf_simple_bitflag[]
CO2_column_volume_mixing_ratio_dry_air_apriori	path	/xco2_apriori[]
CO2_column_volume_mixing_ratio_dry_avk	path	/xco2_averaging_kernel[]
	description	the vertical grid is inverted to make it ascending
CO2_volume_mixing_ratio_dry_air_apriori	path	/co2_profile_apriori[]
	description	the vertical grid is inverted to make it ascending
validity	path	/xco2_quality_flag[]