|Paper title||Recent Results from GOSAT and GOSAT-2 FOCAL Retrievals|
|Form of presentation||Poster|
The Fast atmOspheric traCe gAs retrievaL (FOCAL) algorithm has been originally developed to derive XCO2 from OCO-2 measurements (Reuter et al., 2019a.b). Later, the FOCAL method has also been successfully applied to measurements of the Greenhouse gases Observing SATellites GOSAT and GOSAT-2. (Noël et al., 2021).
FOCAL has proven to be a fast and accurate retrieval method well suited for the challenges of forthcoming greenhouse gas missions producing large amounts of data. FOCAL is one of the foreseen operational algorithms for the forthcoming CO2M mission. The FOCAL retrieval results delivered by the University of Bremen are the baseline for the new GOSAT XCO2 products of the Copernicus Atmosphere Monitoring Service (CAMS).
In this presentation we will show recent results from GOSAT and GOSAT-2 FOCAL retrievals for XCO2 and other gases, e.g. methane (XCH4, both FP products and proxy), water vapour (XH2O) and HDO (δD). For GOSAT-2, we will also present results for carbon monoxide (XCO) and nitrous oxide (XN2O). This will include comparisons with independent data sets.
Noël, S., M. Reuter, M. Buchwitz, J. Borchardt, M. Hilker, H. Bovensmann, J. P. Burrows, A. Di Noia, H. Suto, Y. Yoshida, M. Buschmann, N. M. Deutscher, D. G. Feist, D. W. T. Griffith, F. Hase, R. Kivi, I. Morino, J. Notholt, H. Ohyama, C. Petri, J. R. Podolske, D. F. Pollard, M. K. Sha, K. Shiomi, R. Sussmann, Y. Té, V. A. Velazco and T. Warneke, XCO2 retrieval for GOSAT and GOSAT-2 based on the FOCAL algorithm, Atmos. Meas. Tech., 14(5), 3837-3869, 2021, doi: rm10.5194/amt-14-3837-2021. URL https://amt.copernicus.org/articles/14/3837/2021/
Reuter, M., M. Buchwitz, O. Schneising, S. Noël, V. Rozanov, H. Bovensmann and J. P. Burrows, A fast atmospheric trace gas retrieval for hyperspectral instruments approximating multiple scattering - part 1: Radiative transfer and a potential OCO-2 XCO2 retrieval setup, Rem. Sens., 9(11), 1159, 2017a, ISSN 2072-4292, doi: rm10.3390/rs9111159. URL http://www.mdpi.com/2072-4292/9/11/1159
Reuter, M., M. Buchwitz, O. Schneising, S. Noël, H. Bovensmann and J. P. Burrows, A fast atmospheric trace gas retrieval for hyperspectral instruments approximating multiple scattering - part 2: Application to XCO2 retrievals from OCO-2, Rem. Sens., 9(11), 1102, 2017b, ISSN 2072-4292, doi: rm10.3390/rs9111102. URL http://www.mdpi.com/2072-4292/9/11/1102