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<span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black;" class="ContentPasted0"><span class="ContentPasted0">Dear
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<span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black;" class="ContentPasted0"><span class="ContentPasted0">Here is
the announcement of this week's EOAS colloquium:</span></span></div>
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<div style="margin:0px"><span style="margin:0px"><span style="margin:0px" class="ContentPasted1"><b class="ContentPasted1">Time</b>: TODAY @ 3:00 PM</span></span></div>
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<div style="margin:0px"><span style="margin:0px"><span style="margin:0px" class="ContentPasted1"><b class="ContentPasted1">Location</b>:<span class="ContentPasted1"> </span><span data-markjs="true" class="markh34z3y9ts ContentPasted1" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="margin:0px">EOAS</span><span class="ContentPasted1"> </span>1050 (regular<span class="ContentPasted1"> </span><span data-markjs="true" class="markh34z3y9ts ContentPasted1" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="margin:0px">EOAS</span><span class="ContentPasted1"> </span><span data-markjs="true" class="markpl3rm35c2 ContentPasted1" data-ogac="" data-ogab="" data-ogsc="" data-ogsb="" style="margin:0px">colloquium</span><span class="ContentPasted1"> </span>room)</span></span></div>
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<div style="margin:0px"><span style="margin:0px"><span style="margin:0px" class="ContentPasted1"><b class="ContentPasted1 ContentPasted2" style="background-color: rgb(255, 255, 255);">Speaker</b><span style="display: inline !important; background-color: rgb(255, 255, 255);" class="ContentPasted2">:</span><span class="ContentPasted1 ContentPasted2" style="margin: 0px; background-color: rgb(255, 255, 255);"> Zhaohua Wu,
EOAS, Florida State University</span><br>
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<span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black;" class="ContentPasted0"><b class="ContentPasted0">Title</b>: Waves
in a spatially varying mean flow</span></div>
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<span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black;"><b style="font-size: 16px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0">Abstract</b><span style="font-size: 16px; display: inline !important; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0">: Mechanical waves are propagating
dynamic disturbances that redistribute energy or other
physical quantities in the spatial domain. How waves
propagate in a medium has been one of the most studied
topics in all fields of natural sciences. Yet many
fundamental questions regarding wave propagation in a
complicated and varying medium remain to be understood. In
this talk, the speaker will introduce his study in the
past decade on the propagation of tropical atmospheric
waves in a varying mean flow, seeking to explain why the
observed tropical atmospheric waves should behave as they
are. The focal point is placed on how wave amplitude
changes in a varying mean flow as it propagates away from
its original location. By formulating waves in a general
form independent of wave systems, an equation of the
spatiotemporal change of wave amplitude that only involves
medium characteristics is derived, which is a more
physically intuitive and understandable form of the wave
action equation proposed in the 1960s. This study of waves
also involves a methodology shift used in diagnosing
waves: from Fourier transform-based global wave
formulation to novel localized wave formulation.</span></span><br>
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<div style="font-size: 12pt; color: rgb(0, 0, 0);"><font face="Calibri, Arial, Helvetica, sans-serif">A Zoom link to
the talk is available only by request.</font></div>
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<div style="font-size: 12pt; color: rgb(0, 0, 0);"><font face="Calibri, Arial, Helvetica, sans-serif">Cheers,</font></div>
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<div style="font-size: 12pt; color: rgb(0, 0, 0);"><font face="Calibri, Arial, Helvetica, sans-serif">Zhaohua</font></div>
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<pre class="moz-signature" cols="72">--
Amy Baco-Taylor, PhD
Professor
Earth, Ocean, and Atmospheric Sciences
Florida State University
(850) 645-1547
<a class="moz-txt-link-abbreviated" href="mailto:abacotaylor@fsu.edu">abacotaylor@fsu.edu</a></pre>
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