# GOSAT_FTS_L1b_band3s

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of GOSAT_FTS_L1b_band3s data.

field name

type

dimensions

unit

description

datetime

double

{time}

[seconds since 2000-01-01]

start time of the measurement

longitude

double

{time}

[degree_east]

longitude of the measurement

latitude

double

{time}

[degree_north]

latitude of the measurement

double

{time, spectral}

[V/cm^-1]

radiances derived by taking the norm of the fourier transform of measured wavelengths

wavenumber

double

{time, spectral}

[cm^-1]

wavenumber for each point in the spectrum

index

int32

{time}

zero-based index of the sample within the source product

## Ingestion options

The table below lists the available ingestion options for GOSAT_FTS_L1b products.

option name

legal values

description

band

1p, 1s, 2p, 2s, 3p, 3s, 4

spectral band to ingest (default is 1p)

This definition is only applicable when: band=3s

## Mapping description

The table below details where and how each variable was retrieved from the input product.

field name

mapping description

datetime

path

/exposureAttribute/pointAttribute/Time[]

description

the record with year/month/day/hour/min/sec values is converted to a double precision floating point value that represents the amount of seconds since 2000-01-01 00:00:00

longitude

path

/exposureAttribute/pointAttribute/geometricInfo/centerLon[]

latitude

path

/exposureAttribute/pointAttribute/geometricInfo/centerLat[]

path

/Spectrum/SWIR/band3/obsWavelength[,1,,]

description

the radiance returned is the complex norm of the complex value that is stored in the product; in other words, what is returned is sqrt(real * real + imag * imag)

wavenumber

path