Hello,<div><br></div><div>It is possible that this message is not related to ptop.  This message will also appear if your boundary condition data or your surface files are unreadable for some reason (perhaps the files exist, but the permissions are set so that you cannot actually read one or all of the files).  You should use either ncdump or ncview to check that your boundary condition files are actually present, readable, and not corrupt.</div>
<div><br></div><div>I hope this helps,</div><div>-Travis-</div><div><br></div><div><div class="gmail_quote">On Tue, Aug 10, 2010 at 7:07 AM, 段辉良 <span dir="ltr">&lt;<a href="mailto:flduan@gmail.com">flduan@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div> Dear all,<br>I am getting the following error massage when executing ./icbc, </div>
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<div>This is ICBC part of the RegCM version 4 <br>   SVN Revision:  compiled at: data : Aug 09 2010  time: 09:02:34</div>
<div> : this run start at    : Tue Aug 10 22:25:13 2010<br> : it is submitted by   : flduan<br> : it is running on     : node64<br> : in directory         : /public/home/qita/flduan/RegCM-4.0/Bin<br>                       <br>

 NREC =       299500<br> NSTART,NNNEND:        87665       87669<br> IDATE1,IDATE2:   2001010200  2001010300<br> READ IN fields at DATE:  2001010200<br> Error: <font color="#ff0000">the RCM surface is above the GCM<br></font> model top at i,j=           1           1<br>

 <font color="#3333ff">This might reasonably happen if you have a<br> very tall mountain in your domain.</font> Setting <br> ptop to a smaller value could help.<br> Otherwise, this indicates a bug somewhere...<br> NaN             =&gt;  NaN            ,    5.000000    <br>

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<div>also ,i chang ptop as 2.0,the same message</div>
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<div>Any idea please<br>Thank you<br>Phone: (086) 731-85623282</div>
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