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:n46c0b7qi2hn84luvfnn1m0ho0@google.com DTSTAMP:20180503T102434Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Oceanography and Climate Sack Lunch CONTACT: DESCRIPTION:The ocean is a major sink of anthropogenic CO2 emissions. In or der to predict future atmospheric CO2 levels and global climate\, we must improve quantification of the ocean carbon pumps\, which sequester CO2 fro m the atmosphere on timescales from years to millennia. In this talk\, I w ill present field data from a quasi-Lagrangian cruise in Monterey Bay\, CA and use it to demonstrate how in situ measurements of dissolved gases can be used to quantify the biological and solubility pumps. In particular\, O2 concentration and isotopic composition are tracers of gross and net pro ductivity. A persistent challenge in quantifying biological productivity f rom O2 measurements is the need to accurately parameterize the physical pr ocesses that also alter O2 concentration and isotopic composition (e.g.\, bubble-mediated gas exchange\, diffusive gas exchange\, and mixing). Measu rements of multiple inert gases\, such as the noble gases\, are used to de velop parameterizations for these physical processes. These parameterizati ons are then applied to bioactive gases such as O2 and CO2\, thereby impro ving estimates of the ocean carbon pumps. Additionally\, I will compare in situ gas tracer methods for quantifying productivity with simultaneous in cubation- and sediment trap-based productivity estimates. DTSTART;TZID=America/New_York:20160413T120000 DTEND;TZID=America/New_York:20160413T130000 LOCATION:54-915 SEQUENCE:0 SUMMARY:SLS – Cara Manning (MIT-WHOI) – What can oxygen and noble gases tea ch us about the ocean carbon pumps? URL:http://oceans.mit.edu/event/sls-cara-manning-mit-whoi-what-can-oxygen-a nd-noble-gases-teach-us-about-the-ocean-carbon-pumps X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nThe ocean is a m ajor sink of anthropogenic CO2 emissions. In order to predict future atmos pheric CO2 levels and global climate\, we must improve quantification of t he ocean carbon pumps\, which sequester CO2 from the atmosphere on timesca les from years to millennia. In this talk\, I will present field data from a quasi-Lagrangian cruise in Monterey Bay\, CA and use it to demonstrate how in situ measurements of dissolved gases can be used to quantify the bi ological and solubility pumps. In particular\, O2 concentration and isotop ic composition are tracers of gross and net productivity. A persistent cha llenge in quantifying biological productivity from O2 measurements is the need to accurately parameterize the physical processes that also alter O2 concentration and isotopic composition (e.g.\, bubble-mediated gas exchang e\, diffusive gas exchange\, and mixing). Measurements of multiple inert g ases\, such as the noble gases\, are used to develop parameterizations for these physical processes. These parameterizations are then applied to bio active gases such as O2 and CO2\, thereby improving estimates of the ocean carbon pumps. Additionally\, I will compare in situ gas tracer methods fo r quantifying productivity with simultaneous incubation- and sediment trap -based productivity estimates. END:VEVENT END:VCALENDAR