GEOMSTEFTIR001C2H6
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of GEOMSTEFTIR001C2H6
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 20000101] 
time of the measurement 
datetime_length 
double 
{time} 
[s] 
duration of the measurement 
C2H6_column_number_density 
double 
{time} 
[molec/m2] 
total C2H6 vertical column 
C2H6_column_number_density_apriori 
double 
{time} 
[molec/m2] 
a priori total C2H6 vertical column 
C2H6_column_number_density_avk 
double 
{time, vertical} 
[] 
averaging kernel for the total C2H6 vertical column 
C2H6_column_number_density_uncertainty_random 
double 
{time} 
[molec/m2] 
random uncertainty of the total C2H6 vertical column 
C2H6_column_number_density_uncertainty_systematic 
double 
{time} 
[molec/m2] 
systematic uncertainty of the total C2H6 vertical column 
H2O_column_number_density 
double 
{time} 
[molec/m2] 
total H2O vertical column 
C2H6_volume_mixing_ratio 
double 
{time, vertical} 
[ppmv] 
C2H6 volume mixing ratio 
C2H6_volume_mixing_ratio_apriori 
double 
{time, vertical} 
[ppmv] 
a priori C2H6 volume mixing ratio 
C2H6_volume_mixing_ratio_avk 
double 
{time, vertical, vertical} 
[] 
averaging kernel for the C2H6 volume mixing ratio 
C2H6_volume_mixing_ratio_covariance 
double 
{time, vertical, vertical} 
[(ppmv)2] 
covariance of the C2H6 volume mixing ratio 
C2H6_volume_mixing_ratio_uncertainty_random 
double 
{time, vertical} 
[ppmv] 
random uncertainty of the C2H6 volume mixing ratio 
C2H6_volume_mixing_ratio_uncertainty_systematic 
double 
{time, vertical} 
[ppmv] 
systematic uncertainty of the C2H6 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} 
zerobased 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 

C2H6_column_number_density 
condition 
solar measurement 
path 
/C2H6.COLUMN_ABSORPTION.SOLAR 

description 
unit is converted to molec/m2 

condition 
lunar measurement 

path 
/C2H6.COLUMN_ABSORPTION.LUNAR 

description 
unit is converted to molec/m2 

C2H6_column_number_density_apriori 
condition 
solar measurement 
path 
/C2H6.COLUMN_ABSORPTION.SOLAR_APRIORI 

description 
unit is converted to molec/m2 

condition 
lunar measurement 

path 
/C2H6.COLUMN_ABSORPTION.LUNAR_APRIORI 

description 
unit is converted to molec/m2 

C2H6_column_number_density_avk 
condition 
solar measurement 
path 
/C2H6.COLUMN_ABSORPTION.SOLAR_AVK 

description 
the vertical axis is reordered from surface to topofatmosphere 

condition 
lunar measurement 

path 
/C2H6.COLUMN_ABSORPTION.LUNAR_AVK 

description 
the vertical axis is reordered from surface to topofatmosphere 

C2H6_column_number_density_uncertainty_random 
condition 
solar measurement 
path 
/C2H6.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM 

description 
unit is converted to molec/m2 

condition 
lunar measurement 

path 
/C2H6.COLUMN_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM 

description 
unit is converted to molec/m2 

C2H6_column_number_density_uncertainty_systematic 
condition 
solar measurement 
path 
/C2H6.COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC 

description 
unit is converted to molec/m2 

condition 
lunar measurement 

path 
/C2H6.COLUMN_ABSORPTION.LUNAR_UNCERTAINTY.SYSTEMATIC 

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 

C2H6_volume_mixing_ratio 
available 
optional 
condition 
solar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.SOLAR 

description 
unit is converted to ppmv; the vertical axis is reordered from surface to topofatmosphere 

condition 
lunar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.LUNAR 

description 
unit is converted to ppmv; the vertical axis is reordered from surface to topofatmosphere 

C2H6_volume_mixing_ratio_apriori 
available 
optional 
condition 
solar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.SOLAR_APRIORI 

description 
unit is converted to ppmv; the vertical axis is reordered from surface to topofatmosphere 

condition 
lunar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.LUNAR_APRIORI 

description 
unit is converted to ppmv; the vertical axis is reordered from surface to topofatmosphere 

C2H6_volume_mixing_ratio_avk 
available 
optional 
condition 
solar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.SOLAR_AVK 

description 
the vertical axis is reordered from surface to topofatmosphere 

condition 
lunar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.LUNAR_AVK 

description 
the vertical axis is reordered from surface to topofatmosphere 

C2H6_volume_mixing_ratio_covariance 
available 
optional 
condition 
solar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM 

description 
unit is converted to (ppmv)2; the vertical axis is reordered from surface to topofatmosphere 

condition 
lunar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM 

description 
unit is converted to (ppmv)2; the vertical axis is reordered from surface to topofatmosphere 

C2H6_volume_mixing_ratio_uncertainty_random 
available 
optional 
condition 
solar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM 

description 
the vertical axis is reordered from surface to topofatmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv 

condition 
lunar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.LUNAR_UNCERTAINTY.RANDOM 

description 
the vertical axis is reordered from surface to topofatmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv 

C2H6_volume_mixing_ratio_uncertainty_systematic 
available 
optional 
condition 
solar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC 

description 
the vertical axis is reordered from surface to topofatmosphere; the uncertainty is the square root of the trace of the covariance; unit is converted to ppmv 

condition 
lunar measurement 

path 
/C2H6.MIXING.RATIO_ABSORPTION.LUNAR_UNCERTAINTY.SYSTEMATIC 

description 
the vertical axis is reordered from surface to topofatmosphere; 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_ABSORPTION.SOLAR 

description 
unit is converted to ppmv; the vertical axis is reordered from surface to topofatmosphere 

condition 
lunar measurement 

path 
/H2O.MIXING.RATIO_ABSORPTION.LUNAR 

description 
unit is converted to ppmv; the vertical axis is reordered from surface to topofatmosphere 

altitude 
path 
/ALTITUDE 
description 
the vertical axis is reordered from surface to topofatmosphere 

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 