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<meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear all, <div class=""><br class=""></div><div class="">This <b class="">Friday March 6 at 3:30 PM</b> the EOAS Colloquium in <b class="">1050 EOA</b> will be given by <a href="http://www.met.psu.edu/people/mmg62" class="">Prof. Melissa Gervais</a> of Penn State University. Prof. Gervais will speak about “<i class="">The North Atlantic warming hole: From causes to impacts” </i><span style="font-style: normal;" class="">(abstract below). </span><i class=""> </i></div><div class=""><i class=""><br class=""></i></div><div class=""><span style="font-style: normal;" class="">Prof. Gervais has broad interests in climate dynamics, in particular, how changes in surface forcing by the oceans and sea ice might influence atmospheric circulation. </span>Please contact Allison Wing (<a href="mailto:awing@fsu.edu" class="">awing@fsu.edu</a>) if you would like to meet with Prof. Gervais. </div><div class=""><br class=""></div><div class="">We hope to see you all there! </div><div class=""><span style="font-style: normal;" class=""><br class=""></span></div><div class=""><span style="font-style: normal;" class="">=================</span></div><div class="">Title: <i class="">The North Atlantic warming hole: From causes to impacts</i></div><p class="MsoNormal">Abstract: A
warming deficit in North Atlantic sea surface temperatures (SSTs) is a striking
feature in global climate model future projections. Such changes in ocean temperature themselves
can have implications for fisheries and wildlife and furthermore this region of
reduced warming could have an impact on weather downstream over Europe. The goal of this work is to obtain a
holistic understanding of the coupled processes involved in both the
development of the warming hole and it’s impacts on the atmosphere. An
analysis of the Community Earth System Model Large Ensemble simulations is
conducted to obtain further insight into the development of the warming hole
and its relationship to the Atlantic meridional overturning circulation. In particular the
important roles of increased freshwater flux and local changes in the ocean
circulation on the development of the warming hole will be discussed. A series of large ensemble CESM prescribed
sea surface temperature (SST) and sea ice experiments are conducted where the warming
hole is either filled or deepened to understand how the warming hole might
influence the atmosphere. The results show both a direct linear response and an
indirect eddy driven response that acts to strength and shift the North
Atlantic jet poleward. These local
changes in the North Atlantic eddy driven jet are of a similar magnitude to the
full climate change response in the region, indicating that the North Atlantic
warming hole could be an important additional factor in the “tug of war” on the
midlatitude circulation that has yet to be explored. Finally, the impacts of the warming on
European weather are explored with the use of a machine learning method,
self-organizing maps. </p><br class=""><div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">--------------------------------------------</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Allison A. Wing, Ph.D.</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Assistant Professor</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Department of Earth, Ocean, and Atmospheric Science</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Florida State University</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="mailto:awing@fsu.edu" class="">awing@fsu.edu</a></div></div>
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