Nitrous oxide emission from North America based on bottom-up and top-down approaches: trends, drivers, and comparison

Rongting Xu1, Hanqin Tian1, Rona Thompson2, Josep Gili Canadell3 and GCP/INI Team, (1)Auburn University, International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn, AL, United States, (2)NILU, Oslo, Norway, (3)CSIRO Marine & Atmospheric Res, Canberra, Australia