# ECA_CPR_CLP_2A

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of `ECA_CPR_CLP_2A` data.

field name | type | dimensions | unit | description
--- | --- | --- | --- | ---
datetime | double | {time} | [seconds since 2000-01-01] | UTC time
latitude | double | {time} | [degree_north] | latitude
longitude | double | {time} | [degree_east] | longitude
altitude | double | {time, vertical} | [m] | altitude
orbit_index | int32 |  |  | absolute orbit number
vertical_air_velocity | double | {time, vertical} | [m/s] | vertical air velocity
ice_water_density | double | {time, vertical} | [g/m3] | ice water content
ice_water_density_uncertainty | double | {time, vertical} | [g/m3] | uncertainty in ice water content
ice_water_effective_radius | double | {time, vertical} | [um] | effective radius of ice cloud
ice_water_effective_radius_uncertainty | double | {time, vertical} | [um] | uncertainty in effective radius of ice cloud
liquid_water_density | double | {time, vertical} | [g/m3] | liquid water content
liquid_water_density_uncertainty | double | {time, vertical} | [g/m3] | uncertainty in liquid water content
cloud_water_effective_radius | double | {time, vertical} | [um] | effective radius of liquid water cloud
cloud_water_effective_radius_uncertainty | double | {time, vertical} | [um] | uncertainty in effective radius of liquid water cloud
optical_depth | double | {time} | [] | optical thickness
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 | /ScienceData/Geo/time
latitude | path | /ScienceData/Geo/latitude
longitude | path | /ScienceData/Geo/longitude
altitude | path | /ScienceData/Geo/height
description | the vertical grid is inverted to make it ascending
orbit_index | path | /HeaderData/VariableProductHeader/MainProductHeader/orbitNumber
vertical_air_velocity | path | /ScienceData/Data/cloud_air_velocity_10km
description | the vertical grid is inverted to make it ascending
ice_water_density | path | /ScienceData/Data/cloud_ice_content_10km
description | the vertical grid is inverted to make it ascending
ice_water_density_uncertainty | path | /ScienceData/Data/cloud_ice_content_10km_uncertainty
description | the vertical grid is inverted to make it ascending
ice_water_effective_radius | path | /ScienceData/Data/cloud_ice_effective_radius_10km
description | the vertical grid is inverted to make it ascending
ice_water_effective_radius_uncertainty | path | /ScienceData/Data/cloud_ice_effective_radius_10km, /ScienceData/Data/cloud_ice_effective_radius_10km_uncertainty
description | the relative error in % is turned into an absolute error; the vertical grid is inverted to make it ascending
liquid_water_density | path | /ScienceData/Data/cloud_water_content_10km
description | the vertical grid is inverted to make it ascending
liquid_water_density_uncertainty | path | /ScienceData/Data/cloud_water_content_10km, /ScienceData/Data/cloud_water_content_10km_uncertainty
description | the relative error in % is turned into an absolute error; the vertical grid is inverted to make it ascending
cloud_water_effective_radius | path | /ScienceData/Data/cloud_water_effective_radius_10km
description | the vertical grid is inverted to make it ascending
cloud_water_effective_radius_uncertainty | path | /ScienceData/Data/cloud_water_effective_radius_10km, /ScienceData/Data/cloud_water_effective_radius_10km_uncertainty
description | the relative error in % is turned into an absolute error; the vertical grid is inverted to make it ascending
optical_depth | path | /ScienceData/Data/optical_thickness_10km