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[] |