S5P_L1B_RA_BD4
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of S5P_L1B_RA_BD4 data.
field name |
type |
dimensions |
unit |
description |
|---|---|---|---|---|
scan_subindex |
int16 |
{time} |
zero-based index of the pixel within the scanline |
|
datetime |
double |
{time} |
[seconds since 2010-01-01] |
time of the measurement |
orbit_index |
int32 |
absolute orbit number |
||
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] |
latitudes of the ground pixel corners (WGS84) |
longitude_bounds |
float |
{time, 4} |
[degree_east] |
longitudes of the ground pixel corners (WGS84) |
sensor_latitude |
float |
{time} |
[degree_north] |
latitude of the sub-satellite point (WGS84) |
sensor_longitude |
float |
{time} |
[degree_east] |
longitude of the sub-satellite point (WGS84) |
sensor_altitude |
float |
{time} |
[m] |
altitude of the satellite (WGS84) |
solar_zenith_angle |
float |
{time} |
[degree] |
zenith angle of the Sun at the ground pixel location (WGS84) |
solar_azimuth_angle |
float |
{time} |
[degree] |
azimuth angle of the Sun at the ground pixel location (WGS84), measured East-of-North |
sensor_zenith_angle |
float |
{time} |
[degree] |
zenith angle of the satellite at the ground pixel location (WGS84) |
sensor_azimuth_angle |
float |
{time} |
[degree] |
azimuth angle of the satellite at the ground pixel location (WGS84), measured East-of-North |
wavelength |
float |
{time, spectral} |
[nm] |
nominal wavelength |
photon_radiance |
float |
{time, spectral} |
[mol/(s.m^2.nm.sr)] |
spectral photon radiance |
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 |
|
|---|---|---|
scan_subindex |
description |
the scanline and ground pixel dimensions are collapsed into a single temporal dimension; the index of the pixel within the scanline is computed as the index on this temporal dimension modulo the number of scanlines |
datetime |
path |
/BAND4_RADIANCE/STANDARD_MODE/OBSERVATIONS/time, /BAND4_RADIANCE/STANDARD_MODE/OBSERVATIONS/delta_time[] |
description |
time converted from milliseconds since a reference time (given as seconds since 2010-01-01) to seconds since 2010-01-01 (using 86400 seconds per day); the time associated with a scanline is repeated for each pixel in the scanline |
|
orbit_index |
path |
/@orbit |
latitude |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/latitude[] |
longitude |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/longitude[] |
latitude_bounds |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/latitude_bounds[] |
longitude_bounds |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/longitude_bounds[] |
sensor_latitude |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/satellite_latitude[] |
description |
the satellite latitude associated with a scanline is repeated for each pixel in the scanline |
|
sensor_longitude |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/satellite_longitude[] |
description |
the satellite longitude associated with a scanline is repeated for each pixel in the scanline |
|
sensor_altitude |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/satellite_altitude[] |
description |
the satellite altitude associated with a scanline is repeated for each pixel in the scanline |
|
solar_zenith_angle |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/solar_zenith_angle[] |
solar_azimuth_angle |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/solar_azimuth_angle[] |
sensor_zenith_angle |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/viewing_zenith_angle[] |
sensor_azimuth_angle |
path |
/BAND4_RADIANCE/STANDARD_MODE/GEODATA/viewing_azimuth_angle[] |
wavelength |
path |
/BAND4_RADIANCE/STANDARD_MODE/INSTRUMENT/nominal_wavelength[] |
photon_radiance |
path |
/BAND4_RADIANCE/STANDARD_MODE/OBSERVATIONS/radiance[] |