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- This is the homepage of the USGCRP Carbon Cycle Science Program ...www.carboncyclescience.gov
- United States Trace Gas Network Welcome to the TRAGNET Home Page The atmospheric concentrations of greenhouse gases such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are increasing substantially. These increases are expected to result in global warming and changes in precipitation patterns, and may directly affect terrestrial ecosystems. Our understanding of the contemporary ...www.nrel.colostate.edu/projects/tragnet
