Articles | Volume 16, issue 6 
            
                
                    
            
            
            https://doi.org/10.5194/amt-16-1477-2023
                    © Author(s) 2023. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-16-1477-2023
                    © Author(s) 2023. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm
                                            Earth System Division, National Institute for Environmental Studies, Tsukuba, Japan
                                        
                                    Yukio Yoshida
                                            Earth System Division, National Institute for Environmental Studies, Tsukuba, Japan
                                        
                                    Hirofumi Ohyama
                                            Earth System Division, National Institute for Environmental Studies, Tsukuba, Japan
                                        
                                    Shohei Nomura
                                            Earth System Division, National Institute for Environmental Studies, Tsukuba, Japan
                                        
                                    Akihide Kamei
                                            Earth System Division, National Institute for Environmental Studies, Tsukuba, Japan
                                        
                                    Isamu Morino
                                            Earth System Division, National Institute for Environmental Studies, Tsukuba, Japan
                                        
                                    Hitoshi Mukai
                                            Center for Climate Change Adaptation, National Institute for
Environmental Studies, Tsukuba, Japan
                                        
                                    Tsuneo Matsunaga
                                            Earth System Division, National Institute for Environmental Studies, Tsukuba, Japan
                                        
                                    Joshua L. Laughner
                                            Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA, USA
                                        
                                    Voltaire A. Velazco
                                            Deutscher Wetterdienst, Meteorological Observatory Hohenpeissenberg,  82383 Hohenpeissenberg, Germany
                                        
                                    
                                            Centre for Atmospheric Chemistry, School of Earth, Atmospheric and
Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
                                        
                                    Benedikt Herkommer
                                            Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
                                        
                                    
                                            Laboratoire d'Études du Rayonnement et de la Matière en
Astrophysique et Atmosphères (LERMA-IPSL), Sorbonne Université,
CNRS, Observatoire de Paris, PSL Université, 75005 Paris, France
                                        
                                    Mahesh Kumar Sha
                                            Royal Belgian Institute for Space Agency (BIRA-IASB), Brussels,
Belgium
                                        
                                    Rigel Kivi
                                            Space and Earth Observation Centre, Finnish Meteorological Institute, Tähteläntie 62, 99600 Sodankylä, Finland
                                        
                                    Minqiang Zhou
                                            CNRC & LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
                                        
                                    Young Suk Oh
                                            National Institute of Meteorological Sciences, 33, Seohbuk-ro,
Seogwipo-si, Jeju-do 63568, Republic of Korea
                                        
                                    Nicholas M. Deutscher
                                            Centre for Atmospheric Chemistry, School of Earth, Atmospheric and
Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
                                        
                                    David W. T. Griffith
                                            Centre for Atmospheric Chemistry, School of Earth, Atmospheric and
Life Sciences, University of Wollongong, Wollongong, NSW 2522, Australia
                                        
                                    Data sets
Total Carbon Column Observing Network (TCCON) TCCON https://tccondata.org
Short summary
            The updated retrieval algorithm for the Greenhouse gases Observing SATellite level 2 product is presented. The main changes in the algorithm from the previous one are the treatment of cirrus clouds, the degradation model of the sensor, solar irradiance, and gas absorption coefficient tables. The retrieval results showed improvements in fitting accuracy and an increase in the data amount over land. On the other hand, there are still large biases of XCO2 which should be corrected over the ocean.
            The updated retrieval algorithm for the Greenhouse gases Observing SATellite level 2 product is...
            
         
 
             
             
             
            