The Ministry of the Environment, the National Institute for Environmental Studies (NIES), and the Japan Aerospace Exploration Agency (JAXA) have been cooperatively carrying out the Greenhouse gases Observing SATellite (GOSAT) Project. The satellite was placed in orbit on January 23, 2009 and has been collecting data since the following April. With recently completed initial data validation, we have started distributing the results of the observational data analyses (concentrations of carbon dioxide and methane) to general users from February 18, 2010.