S5_L2_NO2
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of S5_L2_NO2 data.
field name |
type |
dimensions |
unit |
description |
|---|---|---|---|---|
datetime |
double |
{time} |
[seconds since 2020-01-01] |
time of the measurement |
datetime_length |
double |
[s] |
measurement duration |
|
orbit_index |
int32 |
absolute orbit number |
||
validity |
int32 |
{time} |
processing quality flag |
|
latitude |
float |
{time} |
[degree_north] |
latitude of the ground pixel center (WGS84) |
longitude |
float |
{time} |
[degree_east] |
longitude of the ground pixel center (WGS84) |
latitude_bounds |
float |
{time, 4} |
[degree_north] |
the four latitude boundaries of each ground pixel |
longitude_bounds |
float |
{time, 4} |
[degree_east] |
the four longitude boundaries of each ground pixel |
sensor_latitude |
float |
{time} |
[degree_north] |
latitude of the spacecraft sub-satellite point on the WGS84 reference ellipsoid |
sensor_longitude |
float |
{time} |
[degree_east] |
longitude of the spacecraft sub-satellite point on the WGS84 reference ellipsoid |
sensor_altitude |
float |
{time} |
[m] |
altitude of the spacecraft relative to the WGS84 reference ellipsoid. |
sensor_orbit_phase |
double |
{time} |
[] |
relative offset (0.0 … 1.0) of the measurement in the orbit. |
solar_zenith_angle |
float |
{time} |
[degree] |
zenith angle of the sun measured from the ground pixel location on the WGS84 reference ellipsoid |
solar_azimuth_angle |
float |
{time} |
[degree] |
azimuth angle of the sun measured from the ground pixel location on the WGS84 ellipsoid |
sensor_zenith_angle |
float |
{time} |
[degree] |
zenith angle of the spacecraft measured from the ground pixel location on the WGS84 reference ellipsoid |
sensor_azimuth_angle |
float |
{time} |
[degree] |
azimuth angle of the spacecraft measured from the ground pixel WGS84 reference ellipsoid |
surface_altitude |
float |
{time} |
[m] |
height of the surface above WGS84 ellipsoid averaged over the S5 pixel |
surface_altitude_uncertainty |
float |
{time} |
[m] |
standard deviation of the height of the surface above WGS84 ellipsoid averaged over the S5 pixel |
surface_pressure |
float |
{time} |
[Pa] |
surface pressure; from ECMWF and adjusted for surface elevation |
surface_type |
int32 |
{time} |
surface classification |
|
snow_ice_type |
int32 |
{time} |
surface condition (snow/ice); enumeration values: snow_free_land (0), sea_ice (1), permanent_ice (2), snow (3), ocean (4) |
|
sea_ice_fraction |
float |
{time} |
[] |
sea-ice concentration (as a fraction) |
tropospheric_NO2_column_number_density |
float |
{time} |
[mol/m^2] |
tropospheric NO2 vertical column density |
tropospheric_NO2_column_number_density_uncertainty |
float |
{time} |
[mol/m^2] |
tropospheric NO2 vertical column density |
tropospheric_NO2_column_number_density_amf |
float |
{time} |
[mol/m^2] |
tropospheric air mass factor |
NO2_column_number_density_amf |
float |
{time} |
[mol/m^2] |
total air mass factor |
NO2_column_number_density_avk |
float |
{time, vertical} |
[] |
averaging kernel |
tropospheric_NO2_column_number_density_validity |
int32 |
{time} |
[] |
quality assurance value describing the quality of the product |
stratospheric_NO2_column_number_density_amf |
float |
{time} |
[mol/m^2] |
stratospheric air mass factor |
cloud_fraction |
float |
{time} |
[] |
cloud radiance fraction |
NO2_slant_column_number_density |
float |
{time} |
[mol/m^2] |
total NO2 slant column density |
NO2_slant_column_number_density_uncertainty |
float |
{time} |
[mol/m^2] |
total NO2 slant column density uncertainty |
O3_slant_column_number_density |
float |
{time} |
[mol/m^2] |
O3 slant column density |
O3_slant_column_number_density_uncertainty |
float |
{time} |
[mol/m^2] |
O3 slant column density uncertainty |
H2O_vapor_slant_column_number_density |
float |
{time} |
[mol/m^2] |
H2O vapor slant column density |
H2O_vapor_slant_column_number_density_uncertainty |
float |
{time} |
[mol/m^2] |
H2O vapor slant column density uncertainty |
liquid_H2O_slant_column_number_density |
float |
{time} |
[mol/m^2] |
H2O liquid coefficient |
liquid_H2O_slant_column_number_density_uncertainty |
float |
{time} |
[mol/m^2] |
H2O liquid coefficient uncertainty |
stratospheric_NO2_column_number_density |
float |
{time} |
[mol/m^2] |
stratospheric NO2 vertical column density |
stratospheric_NO2_column_number_density_uncertainty |
float |
{time} |
[mol/m^2] |
stratospheric NO2 vertical column density uncertainty |
NO2_column_number_density |
float |
{time} |
[mol/m^2] |
NO2 column number density values in the selected column option |
NO2_column_number_density_uncertainty |
float |
{time} |
[mol/m^2] |
NO2 column number density uncertainty values in the selected column option |
surface_albedo |
float |
{time} |
[] |
surface albedo |
pressure_bounds |
double |
{time, vertical, 2} |
[Pa] |
pressure boundaries |
aerosol_index |
float |
{time} |
[] |
aerosol absorbing index 354/388 pair |
cloud_albedo |
float |
{time} |
[] |
cloud albedo |
cloud_albedo_uncertainty |
float |
{time} |
[] |
cloud albedo uncertainty |
cloud_pressure |
float |
{time} |
[Pa] |
cloud pressure |
cloud_pressure_uncertainty |
float |
{time} |
[Pa] |
cloud pressure uncertainty |
scene_albedo |
float |
{time} |
[] |
scene albedo |
scene_albedo_uncertainty |
float |
{time} |
[] |
scene albedo uncertainty |
scene_pressure |
float |
{time} |
[Pa] |
scene pressure |
scene_pressure_uncertainty |
float |
{time} |
[Pa] |
scene pressure uncertainty |
tropopause_pressure |
float |
{time} |
[Pa] |
tropopause pressure (CAMS) |
index |
int32 |
{time} |
zero-based index of the sample within the source product |
Ingestion options
The table below lists the available ingestion options for S5_L2_NO2 products.
option name |
legal values |
description |
|---|---|---|
total_column |
total, summed |
which NO2 column to ingest: ‘total’ (default) or ‘summed’ |
Mapping description
The table below details where and how each variable was retrieved from the input product.
field name |
mapping description |
|
|---|---|---|
datetime |
path |
/data/PRODUCT/time, /data/PRODUCT/delta_time[] |
description |
time converted from days since 2020-01-01 to seconds since 2020-01-01 (using 86400 seconds per day) and delta_time added; the time associated with a scanline is repeated for each pixel in the scanline |
|
datetime_length |
path |
/data/PRODUCT/delta_time[] |
description |
delta_time[1] - delta_time[0] |
|
orbit_index |
path |
/@orbit_start |
validity |
path |
/data/PRODUCT/processing_quality_flags[] |
description |
the uint64 data is cast to int32 |
|
latitude |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/latitude[] |
longitude |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/longitude[] |
latitude_bounds |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/latitude_bounds[] |
longitude_bounds |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/longitude_bounds[] |
sensor_latitude |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_latitude[] |
description |
the satellite latitude associated with a scanline is repeated for each pixel in the scanline |
|
sensor_longitude |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_longitude[] |
description |
the satellite longitude associated with a scanline is repeated for each pixel in the scanline |
|
sensor_altitude |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_altitude[] |
description |
the satellite altitude associated with a scanline is repeated for each pixel in the scanline |
|
sensor_orbit_phase |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/satellite_orbit_phase[] |
solar_zenith_angle |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/solar_zenith_angle[] |
solar_azimuth_angle |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/solar_azimuth_angle[] |
sensor_zenith_angle |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/viewing_zenith_angle[] |
sensor_azimuth_angle |
path |
/data/PRODUCT/SUPPORT_DATA/GEOLOCATIONS/viewing_azimuth_angle[] |
surface_altitude |
path |
/data/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_altitude[] |
surface_altitude_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_altitude_uncertainty[] |
surface_pressure |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_pressure[] |
surface_type |
path |
/data/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_classification[] |
snow_ice_type |
condition |
band=band3a or band unset |
path |
/data/PRODUCT_BAND3A/SUPPORT_DATA/INPUT_DATA/snow_ice_flag[] |
|
description |
0: snow_free_land (0), 1-100: sea_ice (1), 101: permanent_ice (2), 103: snow (3), 255: ocean (4), other values map to -1 |
|
condition |
band=band3c |
|
path |
/data/PRODUCT_BAND3C/SUPPORT_DATA/INPUT_DATA/snow_ice_flag[] |
|
description |
0: snow_free_land (0), 1-100: sea_ice (1), 101: permanent_ice (2), 103: snow (3), 255: ocean (4), other values map to -1 |
|
sea_ice_fraction |
condition |
band=band3a or band unset |
path |
/data/PRODUCT_BAND3A/SUPPORT_DATA/INPUT_DATA/snow_ice_flag[] |
|
description |
if 1 <= snow_ice_flag <= 100 then snow_ice_flag/100.0 else 0.0 |
|
condition |
band=band3c |
|
path |
/data/PRODUCT_BAND3C/SUPPORT_DATA/INPUT_DATA/snow_ice_flag[] |
|
description |
if 1 <= snow_ice_flag <= 100 then snow_ice_flag/100.0 else 0.0 |
|
tropospheric_NO2_column_number_density |
path |
data/PRODUCT/nitrogen_dioxide_tropospheric_column[] |
tropospheric_NO2_column_number_density_uncertainty |
path |
data/PRODUCT/nitrogen_dioxide_tropospheric_column_uncertainty[] |
tropospheric_NO2_column_number_density_amf |
path |
data/PRODUCT/nitrogen_dioxide_tropospheric_column_air_mass_factor[] |
NO2_column_number_density_amf |
path |
data/PRODUCT/nitrogen_dioxide_total_column_air_mass_factor[] |
NO2_column_number_density_avk |
path |
data/PRODUCT/nitrogen_dioxide_total_column_averaging_kernel[] |
description |
the vertical grid is inverted to make it ascending |
|
tropospheric_NO2_column_number_density_validity |
path |
data/PRODUCT/qa_value[] |
stratospheric_NO2_column_number_density_amf |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_stratospheric_column_air_mass_factor[] |
cloud_fraction |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/cloud_radiance_fraction[] |
NO2_slant_column_number_density |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_slant_column[] |
NO2_slant_column_number_density_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_slant_column_uncertainty[] |
O3_slant_column_number_density |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/ozone_slant_column[] |
O3_slant_column_number_density_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/ozone_slant_column_uncertainty[] |
H2O_vapor_slant_column_number_density |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/water_vapor_slant_column[] |
H2O_vapor_slant_column_number_density_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/water_vapor_slant_column_uncertainty[] |
liquid_H2O_slant_column_number_density |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/water_liquid_slant_column[] |
liquid_H2O_slant_column_number_density_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/water_liquid_slant_column_uncertainty[] |
stratospheric_NO2_column_number_density |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_stratospheric_column[] |
stratospheric_NO2_column_number_density_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_stratospheric_column_uncertainty[] |
NO2_column_number_density |
condition |
total_column=total |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_total_column[] |
|
description |
total NO2 vertical column density |
|
condition |
total_column=summed |
|
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_summed_total_column[] |
|
description |
sum of partial NO2 columns |
|
NO2_column_number_density_uncertainty |
condition |
total_column=total |
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_total_column_uncertainty[] |
|
description |
total NO2 vertical column density uncertainty |
|
condition |
total_column=summed |
|
path |
data/PRODUCT/SUPPORT_DATA/DETAILED_RESULTS/nitrogen_dioxide_summed_total_column_uncertainty[] |
|
description |
sum of partial NO2 vertical column density uncertainty |
|
surface_albedo |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_albedo[] |
pressure_bounds |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/pressure_coefficient_a[], data/PRODUCT/SUPPORT_DATA/INPUT_DATA/pressure_coefficient_b[], data/PRODUCT/SUPPORT_DATA/INPUT_DATA/surface_pressure[] |
description |
pressure in Pa at level k is derived from surface pressure in Pa as: pressure_coefficient_a[k] + pressure_coefficient_b[k] * surface_pressure[]; the top of atmosphere pressure is clamped to 1e-3 Pa |
|
aerosol_index |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/aerosol_index_354_388[] |
cloud_albedo |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_albedo[] |
cloud_albedo_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_albedo_uncertainty[] |
cloud_pressure |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_pressure[] |
cloud_pressure_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/cloud_pressure_uncertainty[] |
scene_albedo |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/scene_albedo[] |
scene_albedo_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/scene_albedo_uncertainty[] |
scene_pressure |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/scene_pressure[] |
scene_pressure_uncertainty |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/scene_pressure_uncertainty[] |
tropopause_pressure |
path |
data/PRODUCT/SUPPORT_DATA/INPUT_DATA/tropopause_pressure[] |