# GEOMS-TE-LIDAR-H2O-004

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of `GEOMS-TE-LIDAR-H2O-004` data.

field name | type | dimensions | unit | description
--- | --- | --- | --- | ---
sensor_name | string |  |  | name of the sensor
location_name | string |  |  | name of the site at which the sensor is located
sensor_latitude | double |  | [degree_north] | latitude of the sensor
sensor_longitude | double |  | [degree_east] | longitude of the sensor
sensor_altitude | double |  | [m] | altitude of the sensor
datetime | double | {time} | [days since 2000-01-01] | time of the measurement
datetime_start | double | {time} | [days since 2000-01-01] | start time of the measurement
datetime_stop | double | {time} | [days since 2000-01-01] | stop time of the measurement
altitude | double | {vertical} | [m] | altitude of the measurement
pressure | double | {vertical} | [hPa] | pressure profile from independent source
temperature | double | {vertical} | [K] | temperature profile from independent source
H2O_volume_mixing_ratio | double | {time, vertical} | [ppmv] | backscatter H2O volume mixing ratio
H2O_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppmv] | combined uncertainty of the absorption differential O3 number density
relative_humidity | double | {time, vertical} | [%] | derived relative humidity
relative_humidity_uncertainty | double | {time, vertical} | [%] | combined uncertainty of the derived relative humidity
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
--- | ---
sensor_name | path | /@DATA.SOURCE
location_name | path | /@DATA.LOCATION
sensor_latitude | path | /LATITUDE.INSTRUMENT
sensor_longitude | path | /LONGITUDE.INSTRUMENT
sensor_altitude | path | /ALTITUDE.INSTRUMENT
datetime | path | /DATETIME
datetime_start | path | /DATETIME.START
datetime_stop | path | /DATETIME.STOP
altitude | path | /ALTITUDE
pressure | path | /PRESSURE_INDEPENDENT
temperature | path | /TEMPERATURE_INDEPENDENT
H2O_volume_mixing_ratio | path | /H2O.MIXING.RATIO.VOLUME_BACKSCATTER
H2O_volume_mixing_ratio_uncertainty | path | /H2O.MIXING.RATIO.VOLUME_BACKSCATTER_UNCERTAINTY.COMBINED.STANDARD
relative_humidity | path | /HUMIDITY.RELATIVE_DERIVED
relative_humidity_uncertainty | path | /HUMIDITY.RELATIVE_DERIVED_UNCERTAINTY.COMBINED.STANDARD