dc.contributor.author | Safieddine, Sarah | |
dc.contributor.author | Heald, Colette L. | |
dc.date.accessioned | 2018-11-14T19:29:22Z | |
dc.date.available | 2018-11-14T19:29:22Z | |
dc.date.issued | 2017-11 | |
dc.date.submitted | 2017-08 | |
dc.identifier.issn | 0094-8276 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/119016 | |
dc.description.abstract | Precipitation 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 (OS[overline][subscript c]) as a simple metric for describing the chemical composition. In the atmosphere, -1.8 ≤ OS[overline][subscript c] ≤ -0.6, and the increase in solubility upon oxidation leads to a global increase in (OS[overline][subscript c]) in precipitation with -0.6 ≤OS[overline][subscript c] ≤ 0. Keywords: dissolved organic carbon; average carbon oxidation state; GEOS-Chem | en_US |
dc.description.sponsorship | United States. National Oceanic and Atmospheric Administration (Grant NA14OAR4310132) | en_US |
dc.language.iso | en_US | |
dc.publisher | American Geophysical Union (AGU) | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1002/2017GL075270 | en_US |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en_US |
dc.source | Prof. Heald via Elizabeth Soergel | en_US |
dc.title | A Global Assessment of Dissolved Organic Carbon in Precipitation | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Safieddine, Sarah A. and Colette L. Heald. “A Global Assessment of Dissolved Organic Carbon in Precipitation.” Geophysical Research Letters 44, 22 (November 2017): 11,672–11,681 © 2017 American Geophysical Union | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering | en_US |
dc.contributor.approver | Colette L. Heald | en_US |
dc.contributor.mitauthor | Safieddine, Sarah | |
dc.contributor.mitauthor | Heald, Colette L. | |
dc.relation.journal | Geophysical Research Letters | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dspace.orderedauthors | Safieddine, Sarah A.; Heald, Colette L. | en_US |
dspace.embargo.terms | N | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-8947-7950 | |
dc.identifier.orcid | https://orcid.org/0000-0003-2894-5738 | |
mit.license | PUBLISHER_POLICY | en_US |