Abstract
AbstractPrecipitation is the largest physical removal pathway of atmospheric reactive organic carbon in the form of dissolved organic carbon (DOC). We present the first global DOC distribution simulated with a global model. A total of 85 and 188 Tg C yr−1 are deposited to the ocean and the land, respectively, with DOC ranging between 0.1 and 10 mg C L−1 in this GEOS‐Chem simulation. We compare the 2010 simulated DOC to a 30 year synthesis of measurements. Despite limited measurements and imperfect temporal matching, the model is able to reproduce much of the spatial variability of DOC (r = 0.63), with a low bias of 35%. We present the global average carbon oxidation state ( ) as a simple metric for describing the chemical composition. In the atmosphere, , and the increase in solubility upon oxidation leads to a global increase in in precipitation with .
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
