GOMOS_L2
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of GOMOS_L2 data.
| field name | type | dimensions | unit | description |
|---|---|---|---|---|
| datetime | double | {time} | [seconds since 2000-01-01] | time of the profile |
| datetime_start | double | {time} | [seconds since 2000-01-01] | start time of the profile |
| datetime_stop | double | {time} | [seconds since 2000-01-01] | stop time of the profile |
| orbit_index | int32 | absolute orbit number | ||
| altitude | double | {time, vertical} | [m] | altitude |
| latitude | double | {time, vertical} | [degree_north] | latitude |
| longitude | double | {time, vertical} | [degree_east] | longitude |
| O3_number_density | double | {time, vertical} | [molec/cm3] | Ozone local density |
| O3_number_density_uncertainty | double | {time, vertical} | [molec/cm3] | standard deviation for the ozone local density |
| O3_number_density_validity | int16 | {time, vertical} | PCD (product confidence data) value for the ozone local density | |
| NO2_number_density | double | {time, vertical} | [molec/cm3] | NO2 local density |
| NO2_number_density_uncertainty | double | {time, vertical} | [molec/cm3] | standard deviation for the NO2 local density |
| NO2_number_density_validity | int16 | {time, vertical} | PCD (product confidence data) value for the NO2 local density | |
| NO3_number_density | double | {time, vertical} | [molec/cm3] | NO3 local density |
| NO3_number_density_uncertainty | double | {time, vertical} | [molec/cm3] | standard deviation for the NO3 local density |
| NO3_number_density_validity | int16 | {time, vertical} | PCD (product confidence data) value for the NO3 local density | |
| O2_number_density | double | {time, vertical} | [molec/cm3] | O2 local density |
| O2_number_density_uncertainty | double | {time, vertical} | [molec/cm3] | standard deviation for the O2 local density |
| O2_number_density_validity | int16 | {time, vertical} | PCD (product confidence data) value for the O2 local density | |
| H2O_number_density | double | {time, vertical} | [molec/cm3] | H2O local density |
| H2O_number_density_uncertainty | double | {time, vertical} | [molec/cm3] | standard deviation for the H2O local density |
| H2O_number_density_validity | int16 | {time, vertical} | PCD (product confidence data) value for the H2O local density | |
| OClO_number_density | double | {time, vertical} | [molec/cm3] | OClO local density |
| OClO_number_density_uncertainty | double | {time, vertical} | [molec/cm3] | standard deviation for the OClO local density |
| OClO_number_density_validity | int16 | {time, vertical} | PCD (product confidence data) value for the OClO local density | |
| aerosol_extinction_coefficient | double | {time, vertical} | [1/km] | aerosol extinction coefficient |
| aerosol_extinction_coefficient_uncertainty | double | {time, vertical} | [1/km] | standard deviation for the aerosol extinction coefficient |
| pressure | double | {time, vertical} | [Pa] | atmospheric pressure from external model |
| temperature | double | {time, vertical} | [K] | temperature |
| temperature_uncertainty | double | {time, vertical} | [K] | standard deviation for the local temperature |
| number_density | double | {time, vertical} | [molec/cm3] | air density |
| number_density_uncertainty | double | {time, vertical} | [molec/cm3] | standard deviation for the local air density |
| number_density_validity | int16 | {time, vertical} | PCD (product confidence data) value for the local air density | |
| sensor_altitude | double | {time, vertical} | [m] | altitude of the satellite |
| sensor_latitude | double | {time, vertical} | [degree_north] | latitude of the satellite position |
| sensor_longitude | double | {time, vertical} | [degree_east] | longitude of the satellite position |
| scene_type | int8 | {time} | illumination condition for the profile; enumeration values: dark (0), bright (1), twilight (2), straylight (3), twilight_straylight (4) | |
| index | int32 | {time} | zero-based index of the sample within the source product |
Ingestion options
The table below lists the available ingestion options for GOMOS_L2 products.
| option name | legal values | description |
|---|---|---|
| temperature | local, model | can be either ‘local’ or ‘model’; ‘local’ (the default) will retrieve the locally measured temperature and ‘model’ will return the temperature from the external model |
| air | local, model | can be either ‘local’ or ‘model’; ‘local’ (the default) will retrieve the locally measured air density and ‘model’ will return the air density from the external model |
Mapping description
GOMOS Level 2 products only contain a single profile; all measured profile points will be provided in reverse order (from low altitude to high altitude) in the profile
The table below details where and how each variable was retrieved from the input product.
| field name | mapping description | |
|---|---|---|
| datetime | path | /nl_geolocation[]/dsr_time |
| description | time of mid record | |
| datetime_start | path | /nl_geolocation[]/dsr_time |
| description | time of first record | |
| datetime_stop | path | /nl_geolocation[]/dsr_time |
| description | time of last record | |
| orbit_index | path | /mph/abs_orbit |
| altitude | path | /nl_geolocation[]/tangent_alt |
| latitude | path | /nl_geolocation[]/tangent_lat |
| longitude | path | /nl_geolocation[]/tangent_long |
| O3_number_density | path | /nl_local_species_density[]/o3 |
| O3_number_density_uncertainty | condition | CODA product version < 2 |
| path | /nl_local_species_density[]/o3_std | |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| condition | CODA product version >= 2 | |
| path | /nl_local_species_density[]/o3_std | |
| description | values equal to 6554 will be set to NaN; value will be converted to an uncertainty by using the log10(v)/0.005 conversion | |
| O3_number_density_validity | path | /nl_local_species_density[]/pcd[0] |
| NO2_number_density | path | /nl_local_species_density[]/no2 |
| NO2_number_density_uncertainty | condition | CODA product version < 2 |
| path | /nl_local_species_density[]/no2_std | |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| condition | CODA product version >= 2 | |
| path | /nl_local_species_density[]/no2_std | |
| description | values equal to 6554 will be set to NaN; value will be converted to an uncertainty by using the log10(v)/0.005 conversion | |
| NO2_number_density_validity | path | /nl_local_species_density[]/pcd[1] |
| NO3_number_density | path | /nl_local_species_density[]/no3 |
| NO3_number_density_uncertainty | condition | CODA product version < 2 |
| path | /nl_local_species_density[]/no3_std | |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| condition | CODA product version >= 2 | |
| path | /nl_local_species_density[]/no3_std | |
| description | values equal to 6554 will be set to NaN; value will be converted to an uncertainty by using the log10(v)/0.005 conversion | |
| NO3_number_density_validity | path | /nl_local_species_density[]/pcd[2] |
| O2_number_density | path | /nl_local_species_density[]/o2 |
| O2_number_density_uncertainty | condition | CODA product version < 2 |
| path | /nl_local_species_density[]/o2_std | |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| condition | CODA product version >= 2 | |
| path | /nl_local_species_density[]/o2_std | |
| description | values equal to 6554 will be set to NaN; value will be converted to an uncertainty by using the log10(v)/0.005 conversion | |
| O2_number_density_validity | path | /nl_local_species_density[]/pcd[4] |
| H2O_number_density | path | /nl_local_species_density[]/h2o |
| H2O_number_density_uncertainty | condition | CODA product version < 2 |
| path | /nl_local_species_density[]/h2o_std | |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| condition | CODA product version >= 2 | |
| path | /nl_local_species_density[]/h2o_std | |
| description | values equal to 6554 will be set to NaN; value will be converted to an uncertainty by using the log10(v)/0.005 conversion | |
| H2O_number_density_validity | path | /nl_local_species_density[]/pcd[5] |
| OClO_number_density | path | /nl_local_species_density[]/oclo |
| OClO_number_density_uncertainty | condition | CODA product version < 2 |
| path | /nl_local_species_density[]/oclo_std | |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| condition | CODA product version >= 2 | |
| path | /nl_local_species_density[]/oclo_std | |
| description | values equal to 6554 will be set to NaN; value will be converted to an uncertainty by using the log10(v)/0.005 conversion | |
| OClO_number_density_validity | path | /nl_local_species_density[]/pcd[6] |
| aerosol_extinction_coefficient | path | /nl_aerosols[]/local_ext |
| aerosol_extinction_coefficient_uncertainty | path | /nl_aerosols[]/local_ext_std |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| pressure | path | /nl_geolocation[]/tangent_atm_p |
| temperature | condition | temperature=local or temperature unset |
| path | /nl_geolocation[]/local_temp | |
| condition | temperature=model | |
| path | /nl_geolocation[]/tangent_temp | |
| temperature_uncertainty | available | optional |
| condition | temperature=local or temperature unset | |
| path | /nl_geolocation[]/local_temp_std | |
| number_density | available | optional |
| condition | air=local or air unset | |
| path | /nl_local_species_density[]/air | |
| condition | air=model and CODA product version > 0 | |
| path | /nl_geolocation[]/tangent_density | |
| number_density_uncertainty | available | optional |
| condition | air=local or air unset and CODA product version < 2 | |
| path | /nl_local_species_density[]/air_std | |
| description | values equal to 6553.5% will be set to NaN; value will be converted to an uncertainty by multiplying with the absolute value of the measured concentration | |
| condition | air=local or air unset and CODA product version >= 2 | |
| path | /nl_local_species_density[]/air_std | |
| description | values equal to 6554 will be set to NaN; value will be converted to an uncertainty by using the log10(v)/0.005 conversion | |
| number_density_validity | available | optional |
| condition | air=local or air unset | |
| path | /nl_local_species_density[]/pcd[3] | |
| sensor_altitude | path | /nl_geolocation[]/tangent_alt |
| sensor_latitude | path | /nl_geolocation[]/lat |
| sensor_longitude | path | /nl_geolocation[]/longit |
| scene_type | condition | CODA product version 0 |
| path | /nl_summary_quality[0]/limb_flag | |
| condition | CODA product version 1 and higher | |
| path | /nl_summary_quality[0]/obs_illum_cond | |