Retrieval on North Aermican Sulfur, Nitrogen, and Ammonia Emission Fields from Air Quality Data

摘要

Valid emission fields are an essential component for air quality modeling and management. However, there are a number of important species, such as dust, NO_x and NH_3, that have large uncertainties.~(1, 2, 3) This is partly due to these emission fields having large fugitive and biogenic contributions which are not easily quantified by traditional source oriented techniques, such as source measurement~4, modeling~5 and material balances~6.