BEGIN:VCALENDAR VERSION:2.0 PRODID:-//18.83.4.138//NONSGML kigkonsult.se iCalcreator 2.20// CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Oceans at MIT X-WR-CALDESC:Striving to understand\, harness and sustain Earth'\;s def ining frontier. X-FROM-URL:http://oceans.mit.edu X-WR-TIMEZONE:America/New_York BEGIN:VTIMEZONE TZID:America/New_York X-LIC-LOCATION:America/New_York BEGIN:STANDARD DTSTART:20171105T020000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RDATE:20181104T020000 TZNAME:EST END:STANDARD BEGIN:DAYLIGHT DTSTART:20180311T020000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:70s03f34m8abqg7qu8bai18etg@google.com DTSTAMP:20180503T075347Z CATEGORIES: CONTACT: 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 X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nEddy-driven subd uction of carbon and oxygen from the upper ocean\n\nHow organic carbon and oxygen produced through photosynthesis in the upper ocean make their way in to the stratified interior is of relevance for the biological pump. Sin king of particulate organic matter contributes to exporting carbon and nit rogen. But\, oxygen necessarily relies on an advective flux that feeds the bacterial demand for decomposing organic matter at depth. Glider profiles of oxygen\, backscatter and chlorophyll are analyzed following the spring phytoplankton bloom in the subpolar North Atlantic and show signatures of subducting water features intertwined within the 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 t he spring bloom. The downward flux can be quantified in terms of the horiz ontal and vertical gradients of buoyancy and tracer. Evaluation of the sca ling estimate over the global oceans shows that eddy-driven subduction fol lowing the spring bloom makes a sizable contribution to the export of carb on and oxygen from the high-latitude oceans.\n END:VEVENT END:VCALENDAR