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</o:shapelayout></xml><![endif]--></head><body lang=EN-SG link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hi,<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><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I’d like to assimilate traditional surface (every 30 min) and upper air (soundings, every 12hr) observations into WRF results before using the next 72 hr GFS forecasts.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>My questions are:<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><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Is it possible to assimilate data at a higher frequency than the 6hr analysis via OBSGRID (every 30min)? If yes how I configure namelist.oa? because I got this error when I select interval= 30 “ The FDDA sfc interval is larger than the 3d interval, STOP ERROR_EXIT in error handler”<o:p></o:p></span></p><p class=MsoListParagraph><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>what is conceptually the main difference in using the OBS_DOMAIN101 file in real and wrf.exe, using metoa files or using wrfsfdda_d01, if the info from the observations is the same? is it the only the way it is pass though the location via the radius of influence or the 3D grids? For my case, is there a better option of doing it?<o:p></o:p></span></p><p class=MsoListParagraph><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>If I use observational analysis using the last analysis times (-6, 0hr) what is better to pass the info to the forecast times (every 3hr): <o:p></o:p></span></p><p class=MsoListParagraph><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>use restart files (running real again for the next 72hr of forecast) or taking only every 6hr forecasts so I can run in a shot (-6hr to +72hr)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>or how can I use the previous results as initial / boundary conditions in the forecasting period?<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><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>A big big thanks in advance!!!<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><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Warm regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-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'></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 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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><o:p> </o:p></p></div></body></html>