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X-WR-CALNAME:Oceans at MIT
X-WR-CALDESC:Striving to understand\, harness and sustain Earth&#039\;s def
 ining frontier.
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DTSTART:20171105T020000
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RDATE:20181104T020000
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DTSTART:20180311T020000
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UID:70s03f34m8abqg7qu8bai18etg@google.com
DTSTAMP:20180503T075345Z
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DESCRIPTION:Eddy-driven subduction of carbon and oxygen from the upper ocea
 n\n\nHow organic carbon and oxygen produced through photosynthesis in the 
 upper ocean make their way in to the stratified interior is of relevance f
 or the biological pump. Sinking of particulate organic matter contributes 
 to exporting carbon and nitrogen. But\, oxygen necessarily relies on an ad
 vective flux that feeds the bacterial demand for decomposing organic matte
 r at depth. Glider profiles of oxygen\, backscatter and chlorophyll are an
 alyzed following the spring phytoplankton bloom in the subpolar North Atla
 ntic and show signatures of subducting water features intertwined within t
 he eddy field. A numerical model reveals how eddies subduct surface waters
  rich in carbon and oxygen during the phase of mixed layer stratification 
 that follows the onset of the spring bloom. The downward flux can be quant
 ified in terms of the horizontal and vertical gradients of buoyancy and tr
 acer. Evaluation of the scaling estimate over the global oceans shows that
  eddy-driven subduction following the spring bloom makes a sizable contrib
 ution to the export of carbon and oxygen from the high-latitude oceans.
DTSTART;TZID=America/New_York:20170227T120000
DTEND;TZID=America/New_York:20170227T130000
LOCATION:54-915
SEQUENCE:0
SUMMARY:PAOC Colloquium – Amala Mahadevan (WHOI)
URL:http://oceans.mit.edu/event/paoc-colloquium-amala-mahadevan-whoi-2
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