GEOMS-TE-FTIR-002-NO2

Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of GEOMS-TE-FTIR-002-NO2 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

measurement_mode

string

‘solar’ or ‘lunar’ measurement

sensor_latitude

double

[degree_north]

latitude of the sensor

sensor_longitude

double

[degree_east]

longitude of the sensor

sensor_altitude

double

[km]

altitude of the sensor

datetime

double

{time}

[days since 2000-01-01]

time of the measurement

datetime_length

double

{time}

[s]

duration of the measurement

NO2_column_number_density

double

{time}

[molec/m2]

total NO2 vertical column

NO2_column_number_density_apriori

double

{time}

[molec/m2]

a priori total NO2 vertical column

NO2_column_number_density_avk

double

{time, vertical}

[]

averaging kernel for the total NO2 vertical column

NO2_column_number_density_uncertainty_random

double

{time}

[molec/m2]

random uncertainty of the total NO2 vertical column

NO2_column_number_density_uncertainty_systematic

double

{time}

[molec/m2]

systematic uncertainty of the total NO2 vertical column

H2O_column_number_density

double

{time}

[molec/m2]

total H2O vertical column

NO2_volume_mixing_ratio

double

{time, vertical}

[ppmv]

NO2 volume mixing ratio

NO2_volume_mixing_ratio_apriori

double

{time, vertical}

[ppmv]

a priori NO2 volume mixing ratio

NO2_volume_mixing_ratio_avk

double

{time, vertical, vertical}

[]

averaging kernel for the NO2 volume mixing ratio

NO2_volume_mixing_ratio_covariance

double

{time, vertical, vertical}

[(ppmv)2]

covariance of the NO2 volume mixing ratio

NO2_volume_mixing_ratio_uncertainty_random

double

{time, vertical}

[ppmv]

random uncertainty of the NO2 volume mixing ratio

NO2_volume_mixing_ratio_uncertainty_systematic

double

{time, vertical}

[ppmv]

systematic uncertainty of the NO2 volume mixing ratio

H2O_volume_mixing_ratio

double

{time, vertical}

[ppmv]

H2O volume mixing ratio

altitude

double

{time, vertical}

[km]

retrieval effective altitude

altitude_bounds

double

{time, vertical, 2}

[km]

lower and upper boundaries of the height layers

pressure

double

{time, vertical}

[hPa]

independent pressure profile

temperature

double

{time, vertical}

[K]

independent temperature profile

surface_pressure

double

{time}

[hPa]

independent surface pressure

surface_temperature

double

{time}

[K]

independent surface temperature

solar_azimuth_angle

double

{time}

[degree]

solar azimuth angle

solar_zenith_angle

double

{time}

[degree]

solar zenith angle

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

measurement_mode

condition

determined from ‘variable mode’ part of variable names

sensor_latitude

path

/LATITUDE.INSTRUMENT

sensor_longitude

path

/LONGITUDE.INSTRUMENT

sensor_altitude

path

/ALTITUDE.INSTRUMENT

datetime

path

/DATETIME

datetime_length

available

optional

path

/INTEGRATION.TIME

NO2_column_number_density

condition

solar measurement

path

/NO2.COLUMN_ABSORPTION.SOLAR

description

unit is converted to molec/m2

condition

lunar measurement

path

/NO2.COLUMN_ABSORPTION.LUNAR

description

unit is converted to molec/m2

NO2_column_number_density_apriori

condition

solar measurement

path

/NO2.COLUMN_ABSORPTION.SOLAR_APRIORI

description

unit is converted to molec/m2

condition

lunar measurement

path

/NO2.COLUMN_ABSORPTION.LUNAR_APRIORI

description

unit is converted to molec/m2

NO2_column_number_density_avk

condition

solar measurement

path

/NO2.COLUMN_ABSORPTION.SOLAR_AVK

description

the vertical axis is re-ordered from surface to top-of-atmosphere

condition

lunar measurement

path

/NO2.COLUMN_ABSORPTION.LUNAR_AVK

description

the vertical axis is re-ordered from surface to top-of-atmosphere

NO2_column_number_density_uncertainty_random

condition

solar measurement

path

/NO2.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.STANDARD

description

unit is converted to molec/m2

condition

lunar measurement

path

/NO2.COLUMN_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM.STANDARD

description

unit is converted to molec/m2

NO2_column_number_density_uncertainty_systematic

condition

solar measurement

path

/NO2.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.STANDARD

description

unit is converted to molec/m2

condition

lunar measurement

path

/NO2.COLUMN_ABSORPTION.LUNAR_UNCERTAINTY.SYSTEMATIC.STANDARD

description

unit is converted to molec/m2

H2O_column_number_density

condition

solar measurement

path

/H2O.COLUMN_ABSORPTION.SOLAR

description

unit is converted to molec/m2

condition

lunar measurement

path

/H2O.COLUMN_ABSORPTION.LUNAR

description

unit is converted to molec/m2

NO2_volume_mixing_ratio

available

optional

condition

solar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR

description

unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere

condition

lunar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.LUNAR

description

unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere

NO2_volume_mixing_ratio_apriori

available

optional

condition

solar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_APRIORI

description

unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere

condition

lunar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.LUNAR_APRIORI

description

unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere

NO2_volume_mixing_ratio_avk

available

optional

condition

solar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_AVK

description

the vertical axis is re-ordered from surface to top-of-atmosphere

condition

lunar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.LUNAR_AVK

description

the vertical axis is re-ordered from surface to top-of-atmosphere

NO2_volume_mixing_ratio_covariance

available

optional

condition

solar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.COVARIANCE

description

unit is converted to (ppmv)2; the vertical axis is re-ordered from surface to top-of-atmosphere

condition

lunar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM.COVARIANCE

description

unit is converted to (ppmv)2; the vertical axis is re-ordered from surface to top-of-atmosphere

NO2_volume_mixing_ratio_uncertainty_random

available

optional

condition

solar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.COVARIANCE

description

the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv

condition

lunar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM.COVARIANCE

description

the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv

NO2_volume_mixing_ratio_uncertainty_systematic

available

optional

condition

solar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.COVARIANCE

description

the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv

condition

lunar measurement

path

/NO2.MIXING.RATIO.VOLUME_ABSORPTION.LUNAR_UNCERTAINTY.SYSTEMATIC.COVARIANCE

description

the vertical axis is re-ordered from surface to top-of-atmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv

H2O_volume_mixing_ratio

condition

solar measurement

path

/H2O.MIXING.RATIO.VOLUME_ABSORPTION.SOLAR

description

unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere

condition

lunar measurement

path

H2O.MIXING.RATIO.VOLUME_ABSORPTION.LUNAR

description

unit is converted to ppmv; the vertical axis is re-ordered from surface to top-of-atmosphere

altitude

path

/ALTITUDE

description

the vertical axis is re-ordered from surface to top-of-atmosphere

altitude_bounds

path

/ALTITUDE.BOUNDS

description

lower and upper boundaries of the height layers

pressure

path

/PRESSURE_INDEPENDENT

description

independent pressure profile

temperature

path

/TEMPERATURE_INDEPENDENT

description

independent temperature profile

surface_pressure

path

/SURFACE.PRESSURE_INDEPENDENT

surface_temperature

path

/SURFACE.TEMPERATURE_INDEPENDENT

solar_azimuth_angle

condition

solar measurement

path

/ANGLE.SOLAR_AZIMUTH

condition

lunar measurement

path

/ANGLE.LUNAR_AZIMUTH

solar_zenith_angle

condition

solar measurement

path

/ANGLE.SOLAR_ZENITH.ASTRONOMICAL

condition

lunar measurement

path

/ANGLE.LUNAR_ZENITH.ASTRONOMICAL