We present an advanced new sensor, the Greenhouse Gas Monitor (GGM), which will revolutionize the global measurement of greenhouse gas levels. The GGM is an ideal compact, passive instrument for deployment on future-generation small LEO satellites. The Kyoto summit on greenhouse gas and carbon emissions has demonstrated the urgent need for accurate, global monitoring of a range of greenhouse ga...

Although this report is intended to be a comprehensive assessment of anthropogenic77 sources and sinks of greenhouse gas emissions for the United States, certain sources have been identified yet excluded from the estimates presented for various reasons. Before discussing these sources, however, it is important to note that processes or activities that are not anthropogenic in origin or do not r...

Wetland ecosystems are important reservoirs of biodiversity and significantly contribute to emissions of the greenhouse gases CO2, N2O, and CH4. High anthropogenic nitrogen (N) inputs from agriculture and fossil fuel combustion have been recognized as a severe threat to biodiversity and ecosystem functioning, such as control of greenhouse gas emissions. Therefore, it is important to understand ...

Agricultural lands occupy 37% of the earth's land surface. Agriculture accounts for 52 and 84% of global anthropogenic methane and nitrous oxide emissions. Agricultural soils may also act as a sink or source for CO2, but the net flux is small. Many agricultural practices can potentially mitigate greenhouse gas (GHG) emissions, the most prominent of which are improved cropland and grazing land m...

The State of California seeks to induce per capita reductions in regional greenhouse gas (GHG) emissions from transportation by setting modeling targets for regional transportation and land use plans. Key to the success of SB 375 are accurate, valid models which are capable of forecasting the effects of transportation and land use policies on future greenhouse gas emissions. Current models are ...

Reports of disappearing glaciers, shrinking arctic ice, rising sea levels, stronger hurricanes, and unprecedented European heat waves combined with an inexorable buildup in atmospheric carbon dioxide levels is increasing pressure on governments to respond with new greenhouse gas initiatives. California and other states are providing policy leadership in the United States. Of particular interest...

This background paper discusses the usefulness of ‘greenhouse gas standards’, based on life-cycle greenhouse gas assessment in ensuring that biofuels mitigate rather than accelerate global warming. It looks at the importance of non-linear feedbacks which could result from deforestation, which could significantly accelerate ecosystem collapse and climate change; at the importance of indirect or ...