Dear RegCNETers,<div><br></div><div>I have gone through both pressure output and hgt output from RegCM4. They all appear to be as Surface Pressure rather than Sea Level Pressure or geopotential height (even at higher levels such as 500 hPa).&nbsp;</div>


<div><br></div><div>Does this mean that RegCM4 doesn&#39;t have the capability of producing these variables? or is there another way to obtain these outputs?</div><div>I found an email from the RegCM3 forums, asking about this very same thing (<a href="https://lists.ictp.it/pipermail/regcnet/2009/001730.html" target="_blank">https://lists.ictp.it/pipermail/regcnet/2009/001730.html</a>).</div>


<div>The answer was the use of sigma2p. I know there is this command on regcm4, but I cannot figure out how to operate it.&nbsp;</div><div><br></div><div>Can someone help please?</div><div><br></div><div>James<br><br><div class="gmail_quote">

On 6 February 2011 12:24, Irini Yiannikopoulou <span dir="ltr">&lt;<a href="mailto:avgeio@yahoo.com" target="_blank">avgeio@yahoo.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">


<table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font:inherit"><div><br>The same happens to me! I don&#39;t know which parameter&nbsp;resulted in&nbsp;these images. It&#39;s difficult for me to find the solution as I am a beginner in RegCM running. In fact I have run the model only two times.</div>



<div>&nbsp;</div>
<div>Irini</div>
<div><br>--- Στις <b>Παρ., 04/02/11, ο/η James Ciarlo` <i>&lt;<a href="mailto:james.ciarlo@physics.org" target="_blank">james.ciarlo@physics.org</a>&gt;</i></b> έγραψε:<br></div>
<blockquote style="border-left:rgb(16,16,255) 2px solid;padding-left:5px;margin-left:5px"><br>Από: James Ciarlo` &lt;<a href="mailto:james.ciarlo@physics.org" target="_blank">james.ciarlo@physics.org</a>&gt;<br>Θέμα: Re: [RegCNET] Output display with GrADS<br>


Προς: &quot;Irini Yiannikopoulou&quot; &lt;<a href="mailto:avgeio@yahoo.com" target="_blank">avgeio@yahoo.com</a>&gt;<br>Κοιν.: <a href="mailto:regcnet@lists.ictp.it" target="_blank">regcnet@lists.ictp.it</a><br>Ημερομηνία: Παρασκευή, 4 Φεβρουάριος 2011, 17:08<div>


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<div>I am experiencing a problem very much identical to this with pressure. I am trying to get pressure at mean sea level but the results are equivalent to surface pressure. But I cannot understand why this is so.
<div><br></div>
<div>James<br><br>
<div>On 4 February 2011 12:37, Irini Yiannikopoulou <span dir="ltr">&lt;<a href="http://gr.mc1214.mail.yahoo.com/mc/compose?to=avgeio@yahoo.com" rel="nofollow" target="_blank">avgeio@yahoo.com</a>&gt;</span> wrote:<br>
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<p style="margin-bottom:0in">Dear all,</p></td></tr></tbody></table></blockquote></div>
<p style="margin-bottom:0in">I have run Regcm4. I used the 1983 dataset from NNRP2 database for the ICBC, the GLCC10MIN_BATS for the landuse, GTOPO30_10MIN for the topography, sst.mnmean, sst.wkmean.1981-1989 and sst.wkmean.1990-present for the SST. The <a href="http://regcm.in/" rel="nofollow" target="_blank">regcm.in</a> file is attached.</p>


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<p style="margin-bottom:0in">When it finished, I converted the outputs of the model to netcdf files in order to display the parameters I wanted using the GrADS. I tried to compare the images with the corresponding ones from the NCEP/NCAR Reanalysis 1 website: &ldquo;<a href="http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html" rel="nofollow" target="_blank">http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html</a>&rdquo;. For many of the parameters the results of the comparison were satisfactory. The main problem appeared with the surface pressure and geopotential heights images in which there are no values at the sea grid points.</p>


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<p style="margin-bottom:0in">Could you please give me an idea of what it went wrong?
</p><p style="margin-bottom:0in">Thank you in advance!
</p><p style="margin-bottom:0in"><br>
</p><p style="margin-bottom:0in">Irini Giannikopoulou
</p><p style="margin-bottom:0in"><br>
</p><p style="margin-bottom:0in">P.S.The surfacepressure and hgt865hPa images, which are attached, are the from the Regcm4.0 output and the surfpres and the hgt850hPa images come from the NCEP/NCAR Reanalysis 1 webpage. The date that is diplayed is 0402198300.
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