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<div class=""><span class="" style="font-style:normal">Dear all,</span></div>
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<div class=""><span class="" style="font-style:normal">In addition to the Meteorology Seminar this Thursday (Jan 23; 3:30 PM 353 LOV) given by Dr. Levi Silvers, and the EOAS Colloquium this Friday (Jan 24; 3:30 PM 1044 EOA) given by Prof. Kevin Reed, we also
have a special Meteorology Seminar <b class="">next Tuesday (Jan 28; 3:30 PM 353 LOV)</b> given by Dr. Tobias Becker of the Max Planck Institute for Meteorology. </span></div>
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</span></div>
<div class=""><span class="" style="font-style:normal">Dr. Becker will speak about the processes that control climate sensitivity in idealized simulations, including convective organization (title & abstract below, flyer attached). Dr. Becker is interested
in the interaction of precipitating convection with the large-scale environment, convective organization, entrainment, and modeling (</span><a href="https://www.mpimet.mpg.de/en/staff/tobias-becker/research-interests/" class="">https://www.mpimet.mpg.de/en/staff/tobias-becker/research-interests/</a>).
Please contact Allison Wing (<a href="mailto:awing@fsu.edu" class="">awing@fsu.edu</a>) if you would like to meet with Dr. Becker (he is visiting Jan 22-29). </div>
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<div class="">There are also a couple spots remaining to meet with Dr. Silvers and Prof. Reed. Each will be on campus Jan 22-24. </div>
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<div class="">Cheers, </div>
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<div class="">Allison</div>
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<div class="">==============</div>
<div class=""><i class="">Upcoming Seminars</i></div>
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<div class=""><span class="" style="font-style:normal"><u class="">Meteorology Seminar by Dr. Levi Silvers (Thursday Jan 23, 3:30 PM 353 LOV)</u></span></div>
<div class=""><span class="" style="font-style:normal"><b class="">Title:</b> A mock-Walker Circulation and Radiative Convecitve Equilibrium: Clouds and Precipitation</span></div>
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</u></span></div>
<div class=""><u class="">EOAS Colloquium by Prof. Kevin Reed (Friday Jan 24, 3:30 PM 1044 EOA)</u></div>
<div class=""><b class="">Title:</b> Exploring Climate Change Impacts on Tropical Cyclones</div>
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<div class=""><span class="" style="font-style:normal"><u class="">Meteorology Seminar by Dr. Tobias Becker (Tuesday Jan 28, 3:30 PM 353 LOV)</u></span></div>
<div class=""><span class="" style="font-style:normal"><b class="">Title: </b>Climate sensitivity across the RCEMIP simulations</span></div>
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<div class=""><b class="">Abstract:</b> Simulations of radiative-convective equilibrium (RCE) have greatly influenced the understanding of climate, and climate change. Early simulations were performed with very simple one-dimensional models of the atmosphere,
followed by cloud-resolving simulations. In the last five years it has also become common practice to simulate RCE with comprehensive general circulation models. These recent studies have revealed that different RCE states can be found, depending on how convection
aggregates, even in the absence of external asymmetries in the forcing, and have motivated the RCEMIP project, which defines a standardized experimental protocol, to study RCE across a range of models. For each RCEMIP model, simulations at fixed sea-surface
temperatures of 295 K, 300 K and 305 K have been performed, both on a small and on a large domain.</div>
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<div class="">Here our focus is on investigating how climate sensitivity differs across those simulations, with the aim to understand what processes control climate sensitivity. The results show that as long as simulations are run on a small domain, differences
in climate sensitivity among the different models are still relatively small, while climate sensitivities vary tremendously for the large domain simulations. The climate sensitivity parameter ranges from very low to high or even negative values, the latter
indicating an unstable climate state. The variability of climate sensitivity is larger on the large domain than on the small domain because convective self-aggregation is suppressed on the small domain, while self-aggregation is free to change with temperature
on the large domain, thereby affecting climate sensitivity: if self-aggregation increases with temperature, then climate sensitivity is small, and if self-aggregation decreases with temperature, then climate sensitivity is high or even negative. We can attribute
this effect to a drying and expansion of the subsiding regions in response to convective self-aggregation, causing an increase in outgoing longwave radiation. In addition, changes in low clouds play a critical role.</div>
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