ESACCI_OZONE_L3_NP

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of ESACCI_OZONE_L3_NP data.

field name	type	dimensions	unit	description
datetime_start	double	{time}	[seconds since 2000-01-01]	time coverage start
datetime_stop	double	{time}	[seconds since 2000-01-01]	time coverage end
longitude	float	{longitude}	[degree_east]	longitude of the grid cell center
latitude	float	{latitude}	[degree_north]	latitude of the grid cell center
pressure	float	{latitude, longitude, vertical}	[hPa]	air pressure profile
pressure_bounds	float	{latitude, longitude, vertical, 2}	[hPa]	air pressure boundaries for each profile level
O3_number_density	float	{latitude, longitude, vertical}	[molec/cm^3]	O3 number density
O3_number_density_uncertainty	float	{latitude, longitude, vertical}	[molec/cm^3]	uncertainty of the O3 number density
O3_volume_mixing_ratio	float	{latitude, longitude, vertical}	[ppmv]	O3 volume mixing ratio
O3_volume_mixing_ratio_uncertainty	float	{latitude, longitude, vertical}	[ppmv]	uncertainty of the O3 volume mixing ratio
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_start	path	/@time_coverage_start
	description	datetime converted from a start date to seconds since 2000-01-01
datetime_stop	path	/@time_coverage_end
	description	datetime converted from an end date to seconds since 2000-01-01
longitude	path	/lon[]
latitude	path	/lat[]
pressure	path	/surface_pressure[], /air_pressure[]
	description	repeat location independent air pressure profile (/air_pressure[]) for each grid point and replace value at the lowest level by location dependent surface pressure (/surface_pressure[])
pressure_bounds	path	/surface_pressure[], /air_pressure[]
	description	repeat location independent air pressure profile (/air_pressure[]) for each grid point and replace value at the lowest level by location dependent surface pressure (/surface_pressure[]); upper and lower pressure for each profile is based on log-linear interpolation of profile (i.e. upper bound is sqrt(pressure[i+1] * pressure[i]), and lower bound is sqrt(pressure[i] * pressure[i-1])); the lower bound of level 0 is set to pressure[0] and the upper bound for level n-1 is set to pressure[n-1]
O3_number_density	path	/O3_ndens[]
O3_number_density_uncertainty	path	/O3e_ndens[]
O3_volume_mixing_ratio	path	/O3_vmr[]
O3_volume_mixing_ratio_uncertainty	path	/O3e_vmr[]