<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Cambria;
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:EN-US;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Arial","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-SG link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Cambria","serif"'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif"'>I’</span><span lang=EN-GB style='font-family:"Cambria","serif"'>m trying to run WRF with obs_nudging option, transforming my own observation data into little_r format for input. <br>in this link (<a href="http://www.mmm.ucar.edu/wrf/users/wrfv3.1/How_to_run_obs_fdda.html">http://www.mmm.ucar.edu/wrf/users/wrfv3 ... _fdda.html</a>) I found that <o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span lang=EN-GB style='font-family:"Cambria","serif"'><br>- U and V are assumed to be the wind components rotated to the model map-projection<br>- SPD, DIR and Td fields are ignored.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-family:"Cambria","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-family:"Cambria","serif"'>my wind data is in Wspeed and Wdir form, so I can change this to u and v but how can I rotate the wind components to Mercator projection? <br><br><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-family:"Cambria","serif"'>Thanks a lot in advance!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-family:"Cambria","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-family:"Cambria","serif"'>Elena<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=500 style='width:375.0pt'><tr style='height:18.75pt'><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm;height:18.75pt'><p class=MsoNormal style='line-height:18.75pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#004165;mso-fareast-language:EN-SG'>Elena Pison San Pedro<o:p></o:p></span></b></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>M.Sc. in Atmospheric Sciences<o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>Meteorologist Researcher<o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><i><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>RDI Department<o:p></o:p></span></i></p></td></tr><tr style='height:18.75pt'><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm;height:18.75pt'><p class=MsoNormal style='line-height:18.75pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-SG'><img border=0 width=101 height=60 id="_x0000_i1025" src="cid:image001.png@01CE0DF0.2C6A9E20" alt="DHI logo"></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-SG'><o:p></o:p></span></p></td></tr><tr style='height:18.75pt'><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm;height:18.75pt'><p class=MsoNormal style='mso-line-height-alt:7.5pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>DHI Water & Environment (S) Pte Ltd<o:p></o:p></span></b></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>1 Cleantech Loop<o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>#03-05 CleanTech One<o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>Singapore 637141<o:p></o:p></span></p></td></tr><tr style='height:7.5pt'><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm;height:7.5pt'><p class=MsoNormal style='mso-line-height-alt:7.5pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td></tr><tr><td width=50 valign=top style='width:37.5pt;padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>Tel: <o:p></o:p></span></p></td><td width=5 valign=top style='width:3.75pt;padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td><td width=445 valign=top style='width:333.75pt;padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>+65 6777 6330<o:p></o:p></span></p></td></tr><tr style='height:7.5pt'><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm;height:7.5pt'><p class=MsoNormal style='mso-line-height-alt:7.5pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#61C250;mso-fareast-language:EN-SG'><a href="mailto:emp@dhi.com.sg"><span style='color:#61C250;text-decoration:none'>emp@dhi.com.sg</span></a><o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#61C250;mso-fareast-language:EN-SG'><a href="www.dhigroup.com"><span style='color:#61C250;text-decoration:none'>www.dhigroup.com</span></a><o:p></o:p></span></p></td></tr><tr style='height:18.75pt'><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm;height:18.75pt'><p class=MsoNormal style='line-height:18.75pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#51626F;mso-fareast-language:EN-SG'>The expert in <b>WATER ENVIRONMENTS</b><o:p></o:p></span></p></td></tr><tr style='height:18.75pt'><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm;height:18.75pt'><p class=MsoNormal style='line-height:18.75pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-SG'> <o:p></o:p></span></p></td></tr><tr><td colspan=3 valign=top style='padding:0cm 0cm 0cm 0cm'><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Arial","sans-serif";color:#8B8D8E;mso-fareast-language:EN-SG'>This message contains information which may be confidential and privileged. Unless you are the intended recipient<br>(or authorised to receive this message for the intended recipient), you may not use, copy, disseminate or disclose<br>any information contained in it thereof. If you have received this communication in error, please advise the sender<br>appropriately by reply e-mail, and then delete it. Thank you very much.<o:p></o:p></span></p></td></tr></table><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Cambria","serif"'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>