# NPP_SUOMI_L2_OMPS_EDR_OOTC

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of `NPP_SUOMI_L2_OMPS_EDR_OOTC` data.

field name | type | dimensions | unit | description
--- | --- | --- | --- | ---
datetime | double | {time} | [seconds since 2000-01-01] | time of the measurement
latitude | double | {time} | [degree_north] | latitude
longitude | double | {time} | [degree_east] | longitude
latitude_bounds | double | {time, 4} | [degree_north] | latitude corners
longitude_bounds | double | {time, 4} | [degree_east] | longitude corners
sensor_azimuth_angle | double | {time} | [degree] | azimuth angle (measured clockwise positive from North) to Satellite at each retrieval position
sensor_zenith_angle | double | {time} | [degree] | zenith angle to Satellite at each retrieval position
solar_azimuth_angle | double | {time} | [degree] | azimuth angle of sun (measured clockwise positive from North) at each retrieval position
solar_zenith_angle | double | {time} | [degree] | zenith angle of sun at each retrieval position
O3_column_number_density | double | {time} | [DU] | ozone column number density
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 | /All_Data/OMPS_TC_GEO_All/MidTime
description | the time converted from seconds since 1958-01-01 to seconds since 2000-01-01T00:00:00
latitude | path | /All_Data/OMPS_TC_GEO_All/Latitude
longitude | path | /All_Data/OMPS_TC_GEO_ALL/Longitude
latitude_bounds | path | /All_Data/OMPS_TC_GEO_All/LatitudeCorners
sensor_azimuth_angle | path | /All_Data/OMPS_TC_GEO_All/SatelliteAzimuthAngle
sensor_zenith_angle | path | /All_Data/OMPS_TC_GEO_All/SatelliteZenithAngle
solar_azimuth_angle | path | /All_Data/OMPS_TC_GEO_All/SatelliteAzimuthAngle
solar_zenith_angle | path | /All_Data/OMPS_TC_GEO_All/SatelliteZenithAngle
O3_column_number_density | path | /All_Data/OMPS_TC_EDR_All/ColumnAmountO3