# HIRDLS_L2

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of `HIRDLS_L2` data.

field name | type | dimensions | unit | description
--- | --- | --- | --- | ---
datetime | double | {time} | [seconds since 2000-01-01] | time of the measurement
longitude | double | {time} | [degree_east] | tangent longitude
latitude | double | {time} | [degree_north] | tangent latitude
altitude | double | {time, vertical} | [m] | altitude per profile level
pressure | double | {vertical} | [hPa] | pressure per profile level
CCl3F_volume_mixing_ratio | double | {time, vertical} | [ppv] | CCl3F (CFC-11) volume mixing ratio
CCl3F_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the CCl3F (CFC-11) volume mixing ratio
CCl2F2_volume_mixing_ratio | double | {time, vertical} | [ppv] | CCl2F2 (CFC-12) volume mixing ratio
CCl2F2_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the CCl2F2 (CFC-12) volume mixing ratio
CH4_volume_mixing_ratio | double | {time, vertical} | [ppv] | CH4 volume mixing ratio
CH4_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the CH4 volume mixing ratio
ClONO2_volume_mixing_ratio | double | {time, vertical} | [ppv] | ClONO2 volume mixing ratio
ClONO2_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the ClONO2 volume mixing ratio
H2O_volume_mixing_ratio | double | {time, vertical} | [ppv] | H2O volume mixing ratio
H2O_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the H2O volume mixing ratio
HNO3_volume_mixing_ratio | double | {time, vertical} | [ppv] | HNO3 volume mixing ratio
HNO3_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the HNO3 volume mixing ratio
N2O_volume_mixing_ratio | double | {time, vertical} | [ppv] | N2O volume mixing ratio
N2O_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the N2O volume mixing ratio
N2O5_volume_mixing_ratio | double | {time, vertical} | [ppv] | N2O5 volume mixing ratio
N2O5_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the N2O5 volume mixing ratio
NO2_volume_mixing_ratio | double | {time, vertical} | [ppv] | NO2 volume mixing ratio
NO2_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the NO2 volume mixing ratio
O3_volume_mixing_ratio | double | {time, vertical} | [ppv] | O3 volume mixing ratio
O3_volume_mixing_ratio_uncertainty | double | {time, vertical} | [ppv] | uncertainty of the O3 volume mixing ratio
temperature | double | {time, vertical} | [K] | temperature
temperature_uncertainty | double | {time, vertical} | [K] | uncertainty of the temperature
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 | /HDFEOS/SWATHS/HIRDLS/Geolocation_Fields/Time[]
description | the time converted from TAI93 to seconds since 2000-01-01T00:00:00
longitude | path | /HDFEOS/SWATHS/HIRDLS/Geolocation_Fields/Longitude[]
latitude | path | /HDFEOS/SWATHS/HIRDLS/Geolocation_Fields/Latitude[]
altitude | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/Altitude[]
pressure | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/Pressure[]
CCl3F_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/CFC11[]
CCl3F_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/CFC11Precision[]
CCl2F2_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/CFC12[]
CCl2F2_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/CFC12Precision[]
CH4_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/CH4[]
CH4_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/CH4Precision[]
ClONO2_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/ClONO2[]
ClONO2_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/ClONO2Precision[]
H2O_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/H2O[]
H2O_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/H2OPrecision[]
HNO3_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/HNO3Precision[]
HNO3_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/HNO3Precision[]
N2O_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/N2O[]
N2O_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/N2OPrecision[]
N2O5_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/N2O5[]
N2O5_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/N2O5Precision[]
NO2_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/NO2[]
NO2_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/NO2Precision[]
O3_volume_mixing_ratio | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/O3[]
O3_volume_mixing_ratio_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/O3Precision[]
temperature | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/Temperature[]
temperature_uncertainty | path | /HDFEOS/SWATHS/HIRDLS/Data_Fields/TemperaturePrecision[]