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Dear all,
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<div>The EOAS colloquium by Prof. Michael Diamond (FSU EOAS) scheduled for tomorrow (Friday October 20) has been postponed. </div>
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<div>It will instead be held <b>*next* Friday, October 27 </b>at 3 PM in EOA 1050. </div>
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<div>Apologies for the late notice, and we look forward to seeing you next Friday. </div>
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<div>Cheers, </div>
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<div>Allison</div>
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Allison A. Wing, Ph.D.</div>
<div>Werner A. and Shirley B. Baum Professor<br>
Associate Professor, Department of Earth, Ocean, and Atmospheric Science<br>
Florida State University<br>
awing@fsu.edu</div>
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<div>On Oct 16, 2023, at 8:50 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar@lists.fsu.edu> wrote:</div>
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Dear colleagues,
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<div>I am happy to announce that this week's speaker of the EOAS colloquium is Dr. Michael Diamond of EOAS.</div>
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<div><b>Time</b>: Friday, Oct 20 @ 3:00 PM</div>
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<div><b>Location</b>: EOAS 1050 (regular EOAS colloquium room)</div>
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<div class="elementToProof">Title: <span class="ContentPasted0" style="background-color: rgb(255, 255, 255); display: inline !important;">Detection of large-scale cloud microphysical changes within a major shipping corridor after implementation of the International
Maritime Organization 2020 fuel sulfur regulations</span></div>
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<b>Abstract</b>: New regulations from the International Maritime Organization (IMO) limiting sulfur emissions from the shipping industry are expected to have large benefits in terms of public health but may come with an undesired side effect: acceleration of
global warming as the climate-cooling effects of ship pollution on marine clouds are diminished. Previous work has found a substantial decrease in the detection of ship tracks in clouds after the IMO 2020 regulations went into effect, but changes in large-scale
cloud properties have been more equivocal. Using a statistical technique that estimates counterfactual fields of what large-scale cloud and radiative properties within an isolated shipping corridor in the southeastern Atlantic would have been in the absence
of shipping, we confidently detect a reduction in the magnitude of cloud droplet effective radius decreases within the shipping corridor and find evidence for a reduction in the magnitude of cloud brightening as well. The instantaneous radiative forcing due
to aerosol–cloud interactions from the IMO 2020 regulations is estimated to be of order 1 W m−2 within the shipping corridor, lending credence to global estimates of order 0.1 W m−2 from climate models. Although the contribution to warming since 2020 is expected
to be small globally, the effects may be much larger regionally in the north Atlantic and Pacific. In addition to their geophysical significance, our results also provide independent evidence for general compliance with the IMO 2020 regulations.
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<div><b>Note</b>: Colleagues are encouraged to attend the colloquium in person. However, attending online will be feasible. Please request the colloquium Zoom link from Zhaohua Wu (<a href="mailto:zwu@fsu.edu">zwu@fsu.edu</a>) if you plan to attend online.</div>
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<div>Cheers,</div>
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<div>Zhaohua<span class="Apple-converted-space"> </span></div>
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<span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
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