Three Case Studies in Greenhouse Gas Emissions – New Insights Provided by an Expanded Atmospheric Observing Network

The global record of greenhouse gas measurements is growing rapidly with the launch of several new satellites and an expansion of ground-based monitoring. This talk will focus on three different case studies – new insights provided by a longer and richer measurement record. The first third of this talk will focus on carbon dioxide sources and sinks estimated using NASA's OCO-2 satellite. We quantify on how sources and sinks from the biosphere have been changing from year-to-year and whether/how remote sensing products like solar-induced fluorescence can be used to build better estimates of global CO2 sources and sinks. The second part of the talk focuses on methane emissions from China, the world's largest emitter of anthropogenic greenhouse gases. We specifically use satellite observations to evaluate the success of China's methane emissions policies. Lastly, we will discuss an often-overlooked greenhouse gas called sulfuryl fluoride, which has surprising and unexpected implications for greenhouse gas emissions targets within the US.