# ESACCI_OZONE_L3_LNTOC

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of `ESACCI_OZONE_L3_LNTOC` data.

field name | type | dimensions | unit | description
--- | --- | --- | --- | ---
datetime | double | {time} | [seconds since 2000-01-01] | datetime
latitude | double | {time} | [degree_north] | latitude
longitude | double | {time} | [degree_east] | longitude
tropopause_altitude | double | {time} | [km] | geometric tropopause altitude measured from sea-level by using the WMO+Potential Vorticity definition for high latitudes > 30 degrees
O3_column_number_density | double | {time} | [DU] | total ozone column number density
O3_column_number_density_uncertainty | double | {time} | [DU] | uncertainty of the total ozone column number density
stratospheric_O3_column_number_density | double | {time} | [DU] | stratospheric ozone column number density
stratospheric_O3_column_number_density_uncertainty | double | {time} | [DU] | uncertainty of the stratospheric ozone column number density
tropospheric_O3_column_number_density | double | {time} | [DU] | tropospheric ozone column number density
tropospheric_O3_column_number_density_uncertainty | double | {time} | [DU] | uncertainty of the tropospheric ozone column number density
cloud_top_height | double | {time} | [km] | the altitude of the cloud top
solar_zenith_angle | double | {time} | [degree] | solar zenith angle at the tangent point
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 | /string_time
description | datetime converted from a string to seconds since 2000-01-01
latitude | path | /latitude[]
longitude | path | /longitude[]
tropopause_altitude | path | /tropopause_altitude[]
O3_column_number_density | path | /total_ozone_column[]
O3_column_number_density_uncertainty | path | /total_ozone_column_standard_error[]
stratospheric_O3_column_number_density | path | /stratospheric_ozone_column[]
stratospheric_O3_column_number_density_uncertainty | path | /stratospheric_ozone_column_standard_error[]
tropospheric_O3_column_number_density | path | /tropospheric_ozone_column[]
tropospheric_O3_column_number_density_uncertainty | path | /tropospheric_ozone_column_standard_error[]
cloud_top_height | path | /cloud_height[]
solar_zenith_angle | path | /sza_tanpnt[]