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dc.contributor.authorMontes-Hugo, Martin
dc.contributor.authorSweeney, Colm
dc.contributor.authorDoney, Scott C.
dc.contributor.authorDucklow, Hugh W.
dc.contributor.authorFrouin, Robert
dc.contributor.authorMartinson, Douglas G.
dc.contributor.authorStammerjohn, Sharon E.
dc.contributor.authorSchofield, Oscar M. E.
dc.date.accessioned2010-08-24T19:59:23Z
dc.date.available2010-09-30T08:21:25Z
dc.date.issued2010-03-30
dc.identifier.citationJournal of Geophysical Research 115 (2010): C03024en_US
dc.identifier.urihttp://hdl.handle.net/1912/3867
dc.descriptionAuthor Posting. © American Geophysical Union, 2010. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 115 (2010): C03024, doi:10.1029/2009JC005267.en_US
dc.description.abstractThe Southern Ocean is a climatically sensitive region that plays an important role in the regional and global modulation of atmospheric CO2. Based on satellite-derived sea ice data, wind and cloudiness estimates from numerical models (National Centers for Environmental Prediction-National Center for Atmospheric Research reanalysis), and in situ measurements of surface (0–20 m depth) chlorophyll a (ChlSurf) and dissolved inorganic carbon (DICSurf) concentration, we show sea ice concentration from June to November and spring wind patterns between 1979 and 2006 had a significant influence on midsummer (January) primary productivity and carbonate chemistry for the Western Shelf of the Antarctic Peninsula (WAP, 64°–68°S, 63.4°–73.3°W). In general, strong (>3.5 m s−1) and persistent (>2 months) northerly winds during the previous spring were associated with relatively high (monthly mean > 2 mg m−3) ChlSurf and low (monthly mean < 2 mmol kg−1) salinity-corrected DIC (DICSurf*) during midsummer. The greater ChlSurf accumulation and DICSurf* depletion was attributed to an earlier growing season characterized by decreased spring sea ice cover or nearshore accumulation of phytoplankton in association with sea ice. The impact of these wind-driven mechanisms on ChlSurf and DICSurf* depended on the extent of sea ice area (SIA) during winter. Winter SIA affected phytoplankton blooms by changing the upper mixed layer depth (UMLD) during the subsequent spring and summer (December–January–February). Midsummer DICSurf* was not related to DICSurf* concentration during the previous summer, suggesting an annual replenishment of surface DIC during fall/winter and a relatively stable pool of deep (>200 m depth) “winter-like” DIC on the WAP.en_US
dc.description.sponsorshipThis research was supported by NSF OPP grants 0217282 to HWD at the Virginia Institute of Marine Science and 0823101 to HWD at the MBL.en_US
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttp://dx.doi.org/10.1029/2009JC005267
dc.subjectClimate variabilityen_US
dc.subjectAntarcticaen_US
dc.subjectCarbonate systemen_US
dc.titleSeasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsulaen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2009JC005267


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