ESACCI_OZONE_L2_NP

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of ESACCI_OZONE_L2_NP data.

field name	type	dimensions	unit	description
scan_subindex	int16	{time}		zero-based index of the instantaneous field of view within the swath
datetime	double	{time}	[hours since 2000-01-01]	time of the measurement
longitude	float	{time}	[degree_east]	longitude of the ground pixel center
latitude	float	{time}	[degree_north]	latitude of the ground pixel center
longitude_bounds	float	{time, 4}	[degree_east]	longitudes of the ground pixel corners
latitude_bounds	float	{time, 4}	[degree_north]	latitudes of the ground pixel corners
sensor_zenith_angle	float	{time}	[degree]	zenith angle of the sensor at the ground pixel center
solar_zenith_angle	float	{time}	[degree]	zenith angle of the Sun at the ground pixel center
pressure	float	{vertical}	[hPa]	pressure
O3_number_density	float	{time, vertical}	[molec/cm3]	O3 number density
O3_number_density_uncertainty	float	{time, vertical}	[molec/cm3]	uncertainty of the O3 number density
O3_number_density_covariance	float	{time, vertical, vertical}	[(molec/cm3)2]	O3 number density solution covariance matrix
O3_number_density_avk	float	{time, vertical, vertical}	[]	O3 number density averaging kernel
O3_volume_mixing_ratio	float	{time, vertical}	[ppv]	O3 volume mixing ratio
O3_volume_mixing_ratio_uncertainty	float	{time, vertical}	[ppv]	uncertainty of the O3 volume mixing ratio
O3_volume_mixing_ratio_apriori	float	{time, vertical}	[ppv]	O3 volume mixing ratio apriori
O3_volume_mixing_ratio_apriori_uncertainty	float	{time, vertical}	[ppv]	uncertainty of the O3 volume mixing ratio apriori
cloud_fraction	double	{time}	[]	effective cloud fraction
cloud_top_pressure	double	{time}	[hPa]	cloud top pressure
cloud_top_albedo	double	{time}	[]	cloud top albedo
surface_albedo	float	{time}	[]	surface albedo
surface_pressure	float	{time}	[hPa]	surface pressure
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
scan_subindex	path	/scp[]
datetime	path	/@Data_date, /time[]
	description	datetime converted from the epoch of the product and an offset in hours to hours since 2000-01-01
longitude	path	/lon[]
latitude	path	/lat[]
longitude_bounds	path	/ll[]
	description	longitudes and latitudes of the ground pixel corners are stored interleaved; longitudes are ingested as [ll[,1], ll[,3], ll[,7], ll[,5]]; note the reordering of the last two values to ensure a simple polygon
latitude_bounds	path	/ll[]
	description	longitudes and latitudes of the ground pixel corners are stored interleaved; latitudes are ingested as [ll[,0], ll[,2], ll[,6], ll[,4]]; note the reordering of the last two values to ensure a simple polygon
sensor_zenith_angle	path	/lza[]
solar_zenith_angle	path	/sza[]
pressure	path	/levs[]
O3_number_density	path	/o3_nd[]
O3_number_density_uncertainty	path	/o3_nd[], /o3_error[]
	description	derived from the relative error in percent as: o3_error[] * 0.01 * o3_nd[]
O3_number_density_covariance	path	/sx[]
O3_number_density_avk	path	/ak[]
O3_volume_mixing_ratio	path	/o3_vmr[]
O3_volume_mixing_ratio_uncertainty	path	/o3_vmr[], /o3_error[]
	description	derived from the relative error in percent as: o3_error[] * 0.01 * o3_vmr[]
O3_volume_mixing_ratio_apriori	path	/o3_ap[]
O3_volume_mixing_ratio_apriori_uncertainty	path	/o3_ap[], /o3_ap_error[]
	description	derived from the relative error in percent as: o3_ap_error[] * 0.01 * o3_ap[]
cloud_fraction	path	/cloudf[]
cloud_top_pressure	path	/cloudp[]
cloud_top_albedo	path	/clouda[]
surface_albedo	path	/salb[]
surface_pressure	path	/spres[]