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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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UID:n46c0b7qi2hn84luvfnn1m0ho0@google.com
DTSTAMP:20180503T102432Z
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
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