Data Processing Work?ow For The Greenhouse Gases Monitoring CubeSat Mission - MeznSat

This paper describes the data processing workflow and the retrieval process for data acquired using MeznSat, a 3U CubeSat for greenhouse gases monitoring. MeznSat has 2 main payloads: an Argus 2000 spectrometer operating in Short-Wave Infra-Red (SWIR) range of 1000 - 1650 nm as a primary payload, and a RGB camera as secondary payload. The processing workflow for this mission is responsible for acquiring tangible information, regarding the atmospheric concentrations of green house gases above the UAE, by processing the data from the Argus 2000 spectrometer. With the aim of monitoring the specific cases of Carbon Dioxide and Methane, this paper explains how the spectral radiation measurements taken from the spectrometer are used to produce an estimate of the gas mix ratios along with other atmospheric parameters. The retrieval method uses a lookup table produced by a radiative transfer forward model that generates synthetic instrumental counts. These counts are used in a comparison model with the observations to produce a match for the atmospheric and surface state.