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<p class="MsoNormal"><span style="color:#1F497D">Zhong,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">There are two resources you can download the datasets from 12-km NAM model<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">(1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D"><a href="http://nomads.ncdc.noaa.gov/data.php#hires_weather_datasets">http://nomads.ncdc.noaa.gov/data.php#hires_weather_datasets</a>, you may have a direct access to this site.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">(2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D"><a href="http://dss.ucar.edu/datasets/ds335.0/matrix.html">http://dss.ucar.edu/datasets/ds335.0/matrix.html</a> you may need to register before you get access. That is free.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="color:#1F497D">The grid value is 218 (B). You should build your WPS with GRB2 option because 12-km NAM are GRIB2 data. You may check out the basic grid information about the datasets as below before
you download them. In respect to application of WPS with multiple tiles in a data, please refer to 3-34~ 37 in the latest version of User’s Guide issued in July 2010. I hope it is helpful.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">VALUE GRID DESCRIPTIONS about 12-km NAM Data<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">218 (B)[B] Grid over the Contiguous United States (used by the 12-km NAM Model) (Lambert Confo<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">rmal)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Nx 614 <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Ny 428 <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">La1 12.190N <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Lo1 226.514E = 133.459W <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Res. & Comp. Flag 0 0 0 0 1 0 0 0
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Lov 265.000E = 95.000W <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Dx 12.19058 km <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Dy 12.19058 km <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Projection Flag (bit 1) 0 (not bipolar)
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Scanning Mode (bits 1 2 3) 0 1 0
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Lat/Lon values of the corners of the grid
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(1,1) 12.190N, 133.459W <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(1,428) 54.564N, 152.878W <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(614,428) 57.328N, 49.420W <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(614,1) 14.342N, 65.127W <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Pole point <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(I,J) (347.668, 1190.097)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Good luck.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Feng<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> wrf-users-bounces@ucar.edu [mailto:wrf-users-bounces@ucar.edu]
<b>On Behalf Of </b>Wu, Zhong-Xiang (Lowell,MA-US)<br>
<b>Sent:</b> Wednesday, February 09, 2011 12:01 PM<br>
<b>To:</b> wrf-users@ucar.edu<br>
<b>Subject:</b> [Wrf-users] NAM 12-km Tiled data for WRF Initialization<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">I am trying to use NAM 12-km tiled forecasts from NCEP in the WPS processing to create met initial files for WRF modeling. My WRF domain covers an area more than one
NAM 12-km tile, so multiple NAM files are needed at one hour. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Is there anyone who used the NAM 12-km tiled forecasts to initialize WRF in the similar way? And how should I use the data if WPS accepts multiple tiled files?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Zhong<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">*********************************************************</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:13.5pt;font-family:"Script MT Bold"">Zhong-Xiang Wu, Ph.D</span></i><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">TRC<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">650 Suffolk Street<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Lowell, Massachusetts, 01854<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Email:
<a href="mailto:zwu@trcsolutions.com">zwu@trcsolutions.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> <a href="mailto:zhong@alum.mit.edu">zhong@alum.mit.edu</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Tel: 978-656-3667<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> Fax: 978-453-1995</span><o:p></o:p></p>
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