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<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:14.0pt;font-family:"TimesNewRomanPS-BoldMT",sans-serif">Postdoc in Source Inversion Support<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:14.0pt;font-family:"TimesNewRomanPS-BoldMT",sans-serif">University of Maryland<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:14.0pt;font-family:"TimesNewRomanPS-BoldMT",sans-serif"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">A position is available for a postdoctoral researcher interested in improving the source<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">attribution capabilities of the HYSPLIT model and performing meteorological<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">simulations for dispersion modeling projects. This postdoc would work with the<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">Transport Modeling & Assessment group at NOAA Air Resources Laboratory (ARL) in<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">College Park, Maryland.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">The work includes:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:12.0pt;font-family:"TimesNewRomanPS-BoldMT",sans-serif">(1) Improvement of source attribution calculations using HYSPLIT<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">ARL seeks to improve an approach to objectively and optimally estimate emission source<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">strengths based on field observations. Toward that end, ensemble HYSPLIT model<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">simulations will be performed and a cost function will be defined to quantify the model<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">and observation differences, weighted by the model and observation uncertainties.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">Minimizing the cost function by adjusting source strength at the known source locations<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">to match the model predictions with the measured air concentrations determines the<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">emissions.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:12.0pt;font-family:"TimesNewRomanPS-BoldMT",sans-serif">(2) Meteorological and dispersion simulations<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">To better describe the mesoscale features in the modeling domain that influence<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">dispersion calculations, ensemble meteorological simulations need to be conducted using<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">the WRF-ARW with data assimilation, which incorporates observations through<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">objective analysis and various nudging strategies. This work will involve running the<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">ensemble WRF model at high resolution for several analysis periods and subsequently<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">running the HYSPLIT model.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">Minimum qualifications for this work include: Ph.D. in atmospheric sciences or related<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">subject; proficiency running WRF; experience with transport and dispersion models such<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">as HYSPLIT; knowledge of Linux, Fortran, and scripting.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">Interested applicants should send a cover letter, resume or CV and a list of three<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">references with contact information including mailing address, phone number and email<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">address to: aosc-jobs@umd.edu For best consideration apply by February 8, 2016,<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif">however, applications will be accepted until the position is filled.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:12.0pt;font-family:"TimesNewRomanPSMT",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"TimesNewRomanPSMT",sans-serif">The University of Maryland, College Park, an equal opportunity/affirmative action employer, complies<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"TimesNewRomanPSMT",sans-serif">with all applicable federal and state laws and regulations regarding nondiscrimination and affirmative<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"TimesNewRomanPSMT",sans-serif">action; all qualified applicants will receive consideration for employment. The University is committed to a<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"TimesNewRomanPSMT",sans-serif">policy of equal opportunity for all persons and does not discriminate on the basis of race, color, religion,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"TimesNewRomanPSMT",sans-serif">activities, and admissions.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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