CH4_GOS_SRFP v2.3.7. CLIMATE APPLICATIONS: Primarily to obtain information on the natural and anthropogenic sources and sinks of CH4 (details see, e.g., GHG-CCI Climate Assessment Report (CAR): http://www.esa-ghg-cci.org/?q=webfm_send/318). Comparison with climate models.. OFFICIAL CITATION: Buchwitz, M., M. Reuter, O. Schneising, et al., Global satellite observations of column-averaged carbon dioxide and methane: The GHG-CCI XCO2 and XCH4 CRDP3 data set, Remote Sensing of Environment (in review), 2016.