# GEOMS-TE-PANDORA-DIRECTSUN-GAS-003-SO2

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of `GEOMS-TE-PANDORA-DIRECTSUN-GAS-003-SO2` 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
datetime | double | {time} | [days since 2000-01-01] | mean 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
datetime_duration | double | {time} | [s] | duration of the measurement
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 relative to the location site
solar_zenith_angle | double | {time} | [degree] | solar astronomical zenith angle
solar_azimuth_angle | double | {time} | [degree] | solar azimuth angle
SO2_column_number_density | double | {time} | [mol/m2] | SO2 column number density
SO2_column_number_density_uncertainty | double | {time} | [mol/m2] | total uncertainty of the SO2 column number density
SO2_column_number_density_uncertainty_random | double | {time} | [mol/m2] | random uncertainty of the SO2 column number density
SO2_column_number_density_uncertainty_systematic | double | {time} | [mol/m2] | systematic uncertainty of the SO2 column number density
SO2_column_number_density_amf | double | {time} | [1] | air mass factor of SO2 column number density
SO2_column_number_density_validity | int32 | {time} |  | quality flag of SO2 column number density
SO2_effective_temperature | double | {time} | [K] | SO2 effective temperature
SO2_effective_temperature_uncertainty | double | {time} | [K] | total uncertainty of the SO2 effective temperature
SO2_effective_temperature_uncertainty_random | double | {time} | [K] | random uncertainty of the SO2 effective temperature
SO2_effective_temperature_uncertainty_systematic | double | {time} | [K] | systematic uncertainty of the SO2 effective 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
--- | ---
sensor_name | path | /@DATA.SOURCE
location_name | path | /@DATA.LOCATION
datetime | path | /DATETIME
datetime_start | path | /DATETIME.START
datetime_stop | path | /DATETIME.STOP
datetime_duration | path | /INTEGRATION.TIME
sensor_latitude | path | /LATITUDE.INSTRUMENT
sensor_longitude | path | /LONGITUDE.INSTRUMENT
sensor_altitude | path | /ALTITUDE.INSTRUMENT
solar_zenith_angle | path | /ANGLE.SOLAR_ZENITH.ASTRONOMICAL
solar_azimuth_angle | path | /ANGLE.SOLAR_AZIMUTH
SO2_column_number_density | path | /SO2.COLUMN.ABSORPTION.SOLAR
SO2_column_number_density_uncertainty | path | /SO2.COLUMN.ABSORPTION.SOLAR_UNCERTAINTY.COMBINED.STANDARD
SO2_column_number_density_uncertainty_random | path | /SO2.COLUMN.ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.STANDARD
SO2_column_number_density_uncertainty_systematic | path | /SO2.COLUMN.ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.STANDARD
SO2_column_number_density_amf | path | /SO2.COLUMN.ABSORPTION.SOLAR_AMF
SO2_column_number_density_validity | path | /SO2.COLUMN.ABSORPTION.SOLAR_FLAG
SO2_effective_temperature | path | /TEMPERATURE.EFFECTIVE.SO2
SO2_effective_temperature_uncertainty | path | /TEMPERATURE.EFFECTIVE.SO2_UNCERTAINTY.COMBINED.STANDARD
SO2_effective_temperature_uncertainty_random | path | /TEMPERATURE.EFFECTIVE.SO2_UNCERTAINTY.RANDOM.STANDARD
SO2_effective_temperature_uncertainty_systematic | path | /TEMPERATURE.EFFECTIVE.SO2_UNCERTAINTY.SYSTEMATIC.STANDARD