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Basin scale changes in carbon export in the subarctic Pacific Ocean linked to El Niņo events
Joaquim
I
Goes, Lamont Doherty Earth Observatory, jig@ldeo.columbia.edu
(Presenter)
Helga
do Rosario
Gomes, Lamont Doherty Earth Observatory, helga@ldeo.columbia.edu
Giulietta
Fargion, San Francisco State University, gfargion@optonline.net
Jan-Erik
Tesdal, Lamont Doherty Earth Observatory, tesdal@ldeo.columbia.edu
The subarctic Pacific Ocean experiences strong climate-modulated seasonal, interannual to decadal variations in meteorological and physical oceanographic conditions, which can have a profound influence on biological processes and carbon cycling in the region. Inorganic nitrate, a major nutrient controlling phytoplankton growth is key to understanding the export of organic matter out of the euphotic zone. Its supply to the region is driven largely, by winter convective mixing. Using ocean color satellite data beginning from 1997 we provide evidence of strong interannual variations in the supply of inorganic nitrate and large changes in carbon export along the entire breadth of the subarctic Pacific basin that appear to be strongly tied to anomalous intensification of the southeastward wind stress during El Niņo events.
Presentation Type: Poster
Session: Theme 4: Human influence on global ecosystems
(Mon 4:30 PM)
Associated Project(s):
- Related Activity: Related Activity or Previously Funded CC&E Activity not listed ...details
Poster Location ID: 57
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