| Egoc_GOME_ozone processor Lv1b-Lv1c gdp01_ex 2 | There are four basic calibration steps needed to convert the instrument binary data into calibrated physical quantities. 1. Signal processing: correction for dark signal, FPA crosstalk, pixel-to-pixel gain, and straylight 2. Wavelength calibration: assigning to each detector pixel its associated wavelength 3. Radiance calibration: conversion of the corrected detector signals of the earth-shine spectra to radiance units; this includes polarisation correction 4. Irradiance calibration: conversion of the corrected detector signals of the solar spectra to irra- diance units; this includes correction for the BSDF of the diffuser plate. Furthermore the measurements have to be geolocated, i.e. the geographical position of the foot- print on the Earth?s surface has to be determined from the instrument?s scan mirror angle and from the spacecraft data. | Details | Visualise |
