Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula
Author 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. The Southern Oce...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3867 2023-05-15T13:53:14+02:00 Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula Montes-Hugo, Martin Sweeney, Colm Doney, Scott C. Ducklow, Hugh W. Frouin, Robert Martinson, Douglas G. Stammerjohn, Sharon E. Schofield, Oscar M. E. 2010-03-30 application/pdf text/plain https://hdl.handle.net/1912/3867 en_US eng American Geophysical Union https://doi.org/10.1029/2009JC005267 Journal of Geophysical Research 115 (2010): C03024 https://hdl.handle.net/1912/3867 doi:10.1029/2009JC005267 Journal of Geophysical Research 115 (2010): C03024 doi:10.1029/2009JC005267 Climate variability Antarctica Carbonate system Article 2010 ftwhoas https://doi.org/10.1029/2009JC005267 2022-05-28T22:58:07Z Author 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. The 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. ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice Southern Ocean Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Antarctic Southern Ocean The Antarctic Antarctic Peninsula Western Shelf ENVELOPE(164.448,164.448,-77.780,-77.780) Journal of Geophysical Research 115 C3 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Climate variability Antarctica Carbonate system |
spellingShingle |
Climate variability Antarctica Carbonate system Montes-Hugo, Martin Sweeney, Colm Doney, Scott C. Ducklow, Hugh W. Frouin, Robert Martinson, Douglas G. Stammerjohn, Sharon E. Schofield, Oscar M. E. Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula |
topic_facet |
Climate variability Antarctica Carbonate system |
description |
Author 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. The 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. ... |
format |
Article in Journal/Newspaper |
author |
Montes-Hugo, Martin Sweeney, Colm Doney, Scott C. Ducklow, Hugh W. Frouin, Robert Martinson, Douglas G. Stammerjohn, Sharon E. Schofield, Oscar M. E. |
author_facet |
Montes-Hugo, Martin Sweeney, Colm Doney, Scott C. Ducklow, Hugh W. Frouin, Robert Martinson, Douglas G. Stammerjohn, Sharon E. Schofield, Oscar M. E. |
author_sort |
Montes-Hugo, Martin |
title |
Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula |
title_short |
Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula |
title_full |
Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula |
title_fullStr |
Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula |
title_full_unstemmed |
Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula |
title_sort |
seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the antarctic peninsula |
publisher |
American Geophysical Union |
publishDate |
2010 |
url |
https://hdl.handle.net/1912/3867 |
long_lat |
ENVELOPE(164.448,164.448,-77.780,-77.780) |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Western Shelf |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Western Shelf |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice Southern Ocean |
op_source |
Journal of Geophysical Research 115 (2010): C03024 doi:10.1029/2009JC005267 |
op_relation |
https://doi.org/10.1029/2009JC005267 Journal of Geophysical Research 115 (2010): C03024 https://hdl.handle.net/1912/3867 doi:10.1029/2009JC005267 |
op_doi |
https://doi.org/10.1029/2009JC005267 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
container_issue |
C3 |
_version_ |
1766258228807598080 |