Fenjuan Wang^1,2, Shamil S Maksyutov¹, Aki Tsuruta³, Rajesh Janardanan Achari¹, Akihiko Ito¹, Motoki Sasakawa¹, Isamu Morino¹, Yukio Yoshida¹, Johannes W. Kaiser⁴, Greet Georgette Alice Janssens-Maenhout⁵, Edward J Dlugokencky⁶ and Tsuneo Matsunaga¹, (1)National Institute for Environmental Studies, Tsukuba, Japan, (2)National Climate Center, CMA, Beijing, China, (3)Finnish Meteorological Institute, Helsinki, Finland, (4)Max Planck Institute for Chemistry, Mainz, Germany, (5)Joint Research Center Ispra, Ispra, Italy, (6)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States