# S5P_L1B_RA_BD3

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of S5P_L1B_RA_BD3 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

float

{time, spectral}

[mol/(s.m^2.nm.sr)]

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

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

longitude

path

latitude_bounds

path

longitude_bounds

path

sensor_latitude

path

description

the satellite latitude associated with a scanline is repeated for each pixel in the scanline

sensor_longitude

path

description

the satellite longitude associated with a scanline is repeated for each pixel in the scanline

sensor_altitude

path

description

the satellite altitude associated with a scanline is repeated for each pixel in the scanline

solar_zenith_angle

path

solar_azimuth_angle

path

sensor_zenith_angle

path

sensor_azimuth_angle

path

wavelength

path

path