ESACCI_OZONE_L2_TC

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of ESACCI_OZONE_L2_TC data.

field name	type	dimensions	unit	description
index	int32	{time}		zero-based index of the sample within the source product
scanline_pixel_index	int32	{time}		zero-based index of the instantaneous field of view within the swath
datetime	double	{time}	days since 2000-01-01	time of the measurement
longitude	double	{time}	degree_east	longitude of the ground pixel center
latitude	double	{time}	degree_north	latitude of the ground pixel center
longitude_bounds	double	{time, 4}	degree_east	longitudes of the ground pixel corners
latitude_bounds	double	{time, 4}	degree_north	latitudes of the ground pixel corners
solar_zenith_angle	double	{time}	degree	zenith angle of the Sun at the ground pixel center
viewing_zenith_angle	double	{time}	degree	zenith angle of the instrument at the ground pixel center (< 0 for Eastern, > 0 for Western pixels)
relative_azimuth_angle	double	{time}	degree	relative azimuth angle at the ground pixel center
O3_column_number_density	double	{time}	DU	O3 total column number density
O3_column_number_density_stdev_random	double	{time}	DU	random uncertainty of the O3 total column number density
temperature	double	{time}	K	retrieved effective temperature
cloud_fraction	double	{time}	1	effective cloud fraction
cloud_top_pressure	double	{time}	Pa	cloud top pressure
cloud_top_albedo	double	{time}	1	effective cloud top albedo
pressure	double	{time}	Pa	pressure at the effective scene used for the retrieval
albedo	double	{time}	1	retrieved effective albedo of the scene
surface_albedo	double	{time}	1	minimum surface albedo at 335nm from OMI LER climatology
surface_altitude	double	{time}	m	surface altitude extracted from GTOPO30
pressure_bounds	double	{time, vertical, 2}	Pa	pressure at the boundaries of the layers used in the forward model
O3_column_number_density_avk	double	{time, vertical}	1	averaging kernels in the layers of the forward model
O3_column_number_density_apriori	double	{time, vertical}	DU	a-priori partial ozone columns in the layers of the forward model

Mapping description

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

field name	mapping description
scanline_pixel_index	path	/pixel_number[]
datetime	path	/time[]
	description	datetime converted from days since 1995-01-01 UTC to days since 2000-01-01 TAI
longitude	path	/longitude[]
latitude	path	/latitude[]
longitude_bounds	path	/longitude_corner[]
latitude_bounds	path	/latitude_corner[]
solar_zenith_angle	path	/solar_zenith_angle[]
viewing_zenith_angle	path	/viewing_zenith_angle[]
relative_azimuth_angle	path	/relative_azimuth_angle[]
O3_column_number_density	path	/atmosphere_mole_content_of_ozone[]
O3_column_number_density_stdev_random	path	/atmosphere_mole_content_of_ozone_random_error[]
temperature	path	/effective_temperature[]
cloud_fraction	path	/cloud_area_fraction[]
cloud_top_pressure	path	/air_pressure_at_cloud_top[]
cloud_top_albedo	path	/cloud_albedo[]
pressure	path	/effective_scene_air_pressure[]
albedo	path	/effective_scene_albedo[]
surface_albedo	path	/surface_albedo[]
surface_altitude	path	/surface_altitude[]
pressure_bounds	path	/atmosphere_pressure_grid
	description	converted from pressure levels given at the boundaries between adjacent layers to a pair ofpressures per layer (each pair consists of the pressure at the lower and at the upper boundary of a layer)
O3_column_number_density_avk	path	/averaging_kernels[]
O3_column_number_density_apriori	path	/apriori_ozone_profile[]