<div dir="ltr"><div class="gmail_default" style="font-size:small">FYI</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <strong class="gmail_sendername" dir="auto">Andrew Winters</strong> <span dir="auto"><<a href="mailto:andrew.c.winters@colorado.edu">andrew.c.winters@colorado.edu</a>></span><br>Date: Thu, Nov 9, 2023 at 7:28 AM<br>Subject: Re: ATOC Colloquium: Friday, November 10 @ 11am MT – Dr. Jake Gristey – SEEC S228 and Zoom<br>To: ATOC Faculty <<a href="mailto:atoc-faculty@colorado.edu">atoc-faculty@colorado.edu</a>>, ATOC Graduate Students <<a href="mailto:atoc-students@colorado.edu">atoc-students@colorado.edu</a>>, <a href="mailto:atoc-majors@colorado.edu">atoc-majors@colorado.edu</a> <<a href="mailto:atoc-majors@colorado.edu">atoc-majors@colorado.edu</a>>, <a href="mailto:atoc-minors@colorado.edu">atoc-minors@colorado.edu</a> <<a href="mailto:atoc-minors@colorado.edu">atoc-minors@colorado.edu</a>>, ATOC Researchers <<a href="mailto:atoc-researchers@colorado.edu">atoc-researchers@colorado.edu</a>>, <a href="mailto:atoc-colloquium@colorado.edu">atoc-colloquium@colorado.edu</a> <<a href="mailto:atoc-colloquium@colorado.edu">atoc-colloquium@colorado.edu</a>><br>Cc: Jake J Gristey <<a href="mailto:jake.j.gristey@noaa.gov">jake.j.gristey@noaa.gov</a>><br></div><br><br><div class="msg6042588151143679463">




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A reminder that the final <span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">ATOC</span></span></span></span></span> <span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">Colloquium
 of the fall semester</span><span style="margin:0px"> </span></span></span></span></span></span></span>will be held in a hybrid format on<span style="margin:0px"> </span><b>Friday,
 November 10 from 11a–12p MT over Zoom and in SEEC S228.<span style="margin:0px"> </span></b>This week's <span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">colloquium</span></span></span></span> will
 feature<span style="margin:0px"> a seminar from<span style="margin:0px"> </span><b>Dr.
 Jake Gristey (CIRES/NOAA CSL/LASP)</b><span style="margin:0px"> </span>entitled,<span style="margin:0px"> </span><i>"Shedding
 Light on Solar Radiation Variability at Earth’s Surface</i></span><span style="margin:0px;background-color:white">". The
 zoom login information and an abstract for the </span><span style="margin:0px;background-color:white"><span style="margin:0px">colloquium</span></span><span style="margin:0px;background-color:white"> are
 provided below. Please join us for conversation beginning at 10:45am MT, and stay afterwards for a lunch catered by Illegal Pete's.</span></div>
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We look forward to seeing you on Friday!<br>
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-The<span style="margin:0px"> </span><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">ATOC</span></span></span></span></span></span><span style="margin:0px"> </span><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">Colloquium</span></span></span></span></span></span></span></span></span><span style="margin:0px"> </span>Committee</div>
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<b>Shedding Light on Solar Radiation Variability at Earth’s Surface<br>
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<span style="margin:0px"><span style="margin:0px;background-color:white">Jake Gristey (CIRES/NOAA CSL/LASP)</span><br>
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Energy originating from the sun and reaching Earth’s surface, known as the surface solar irradiance (SSI), is strongly modulated by ubiquitous shallow cumulus clouds. The detailed 3D spatial structure of shallow cumulus clouds, their rapid evolution, and coexisting
 aerosol all lead to complex variability in SSI that has proven challenging to understand and predict. In this talk, I will show how this SSI variability is encapsulated by the bi-modal shape of the SSI probability density function (PDF), which is robustly
 observed but only reproduced with 3D radiative transfer. Machine learning is explored to construct a mapping between cloud and aerosol properties, from large eddy simulation, and the corresponding SSI PDF, from 3D radiative transfer. This enables a drastic
 improvement in prediction of SSI, relative to traditional 1D radiative transfer, with negligible computational expense. I will also demonstrate how machine learning inference techniques reveal an inordinately large importance of aerosol between clouds. The
 findings have direct relevance for solar renewable energy assessments and highlight the significance of neglecting 3D radiative effects in atmospheric modeling.<br>
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<b>Topic: ATOC Colloquium</b>
<div style="margin:0px"><b>Time: Nov 10, 2023 11:00 AM Mountain Time (US and Canada)</b></div>
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<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px"><b>Andrew C. Winters</b></span></div>
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<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px">Assistant Professor</span></div>
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<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px">Department of Atmospheric and Oceanic Sciences (ATOC)</span></div>
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<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px">University of Colorado Boulder</span></div>
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<div id="m_6042588151143679463divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Andrew Winters<br>
<b>Sent:</b> Monday, November 6, 2023 7:57 AM<br>
<b>To:</b> ATOC Faculty <<a href="mailto:atoc-faculty@colorado.edu" target="_blank">atoc-faculty@colorado.edu</a>>; ATOC Graduate Students <<a href="mailto:atoc-students@colorado.edu" target="_blank">atoc-students@colorado.edu</a>>; <a href="mailto:atoc-majors@colorado.edu" target="_blank">atoc-majors@colorado.edu</a> <<a href="mailto:atoc-majors@colorado.edu" target="_blank">atoc-majors@colorado.edu</a>>; <a href="mailto:atoc-minors@colorado.edu" target="_blank">atoc-minors@colorado.edu</a> <<a href="mailto:atoc-minors@colorado.edu" target="_blank">atoc-minors@colorado.edu</a>>; ATOC Researchers <<a href="mailto:atoc-researchers@colorado.edu" target="_blank">atoc-researchers@colorado.edu</a>>;
 <a href="mailto:atoc-colloquium@colorado.edu" target="_blank">atoc-colloquium@colorado.edu</a> <<a href="mailto:atoc-colloquium@colorado.edu" target="_blank">atoc-colloquium@colorado.edu</a>><br>
<b>Cc:</b> Jake J Gristey <<a href="mailto:jake.j.gristey@noaa.gov" target="_blank">jake.j.gristey@noaa.gov</a>><br>
<b>Subject:</b> ATOC Colloquium: Friday, November 10 @ 11am MT – Dr. Jake Gristey – SEEC S228 and Zoom</font>
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<span style="font-size:12pt;margin:0px;color:rgb(0,0,0);background-color:rgb(255,255,255)"><span style="margin:0px;background-color:rgb(255,255,255)"><span style="margin:0px;color:black;background-color:rgb(255,255,255)"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="font-size:15px;margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="font-size:12pt;margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px;background-color:white"><span style="margin:0px">Hi
 everyone,<br>
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The final <span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">ATOC</span></span></span></span></span> <span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">Colloquium
 of the fall semester</span><span style="margin:0px"> </span></span></span></span></span></span></span>will be held in a hybrid format on<span style="margin:0px"> </span><b>Friday,
 November 10 from 11a–12p MT over Zoom and in SEEC S228.<span style="margin:0px"> </span></b>This week's <span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">colloquium</span></span></span></span> will
 feature<span style="margin:0px"> a seminar from<span style="margin:0px"> </span><b>Dr.
 Jake Gristey (CIRES/NOAA CSL/LASP)</b><span style="margin:0px"> </span>entitled,<span style="margin:0px"> </span><i>"Shedding
 Light on Solar Radiation Variability at Earth’s Surface</i></span><span style="background-color:white">". The zoom login information and
 an abstract for the </span><span style="background-color:white"><span>colloquium</span></span><span style="background-color:white"> are
 provided below. Please join us for conversation beginning at 10:45am MT, and stay afterwards for a lunch catered by Illegal Pete's.</span></div>
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We look forward to seeing you on Friday!<br>
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-The<span style="margin:0px"> </span><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">ATOC</span></span></span></span></span></span><span style="margin:0px"> </span><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px"><span style="margin:0px">Colloquium</span></span></span></span></span></span></span></span></span><span style="margin:0px"> </span>Committee</div>
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<div style="margin:0px;background-color:white"><b>Shedding Light on Solar Radiation Variability at Earth’s Surface<br>
</b></div>
<div style="margin:0px;background-color:white"><span style="margin:0px"><span style="margin:0px;background-color:white">Jake
 Gristey (CIRES/NOAA CSL/LASP)</span><br>
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Energy originating from the sun and reaching Earth’s surface, known as the surface solar irradiance (SSI), is strongly modulated by ubiquitous shallow cumulus clouds. The detailed 3D spatial structure of shallow cumulus clouds, their rapid evolution, and coexisting
 aerosol all lead to complex variability in SSI that has proven challenging to understand and predict. In this talk, I will show how this SSI variability is encapsulated by the bi-modal shape of the SSI probability density function (PDF), which is robustly
 observed but only reproduced with 3D radiative transfer. Machine learning is explored to construct a mapping between cloud and aerosol properties, from large eddy simulation, and the corresponding SSI PDF, from 3D radiative transfer. This enables a drastic
 improvement in prediction of SSI, relative to traditional 1D radiative transfer, with negligible computational expense. I will also demonstrate how machine learning inference techniques reveal an inordinately large importance of aerosol between clouds. The
 findings have direct relevance for solar renewable energy assessments and highlight the significance of neglecting 3D radiative effects in atmospheric modeling.<br>
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<div style="margin:0px;background-color:white"><u>Zoom login Information:</u></div>
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<b>Topic: ATOC Colloquium</b>
<div style="margin:0px"><b>Time: Nov 10, 2023 11:00 AM Mountain Time (US and Canada)</b></div>
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<div style="margin:0px"><b><a href="https://cuboulder.zoom.us/j/98582201579" id="m_6042588151143679463OWA1049a850-48be-6c3f-13d0-817b261f8019" style="margin:0px" target="_blank">https://cuboulder.zoom.us/j/98582201579</a></b></div>
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<div style="font-size:12pt;font-family:Calibri,Arial,Helvetica,sans-serif;margin:0px;text-align:start;color:black;background-color:white">
<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px"><b>Andrew C. Winters</b></span></div>
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<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px">Assistant Professor</span></div>
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<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px">Department of Atmospheric and Oceanic Sciences (ATOC)</span></div>
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<span style="font-family:"Calibri Light","Helvetica Light",sans-serif;margin:0px">University of Colorado Boulder</span></div>
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</div></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">Scott Briggs (he/him/his)</span><br></div><div><font face="arial, sans-serif" style="background-color:rgb(255,255,255)" color="#000000">Administrator</font></div><div><font face="arial, sans-serif" style="background-color:rgb(255,255,255)" color="#000000"><br></font></div><div dir="ltr"><font face="arial, sans-serif" style="background-color:rgb(255,255,255)" color="#000000">Advanced Study Program<br>Education, Engagement and Early-Career Development<br>National Center For Atmospheric Research</font></div><div><font face="arial, sans-serif" size="1" color="#000000"><i style="background-color:rgb(255,255,255)">phone: 303.497.1607</i></font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>