CINsfc should be the CIN of a surface based parcel using surface data, not data interpolated to 1000 mb.<br><br><div class="gmail_quote">On Sun, Nov 13, 2011 at 3:22 PM, Rowell, Mason D. <span dir="ltr"><<a href="mailto:Mason.D.Rowell-1@ou.edu">Mason.D.Rowell-1@ou.edu</a>></span> wrote:<br>
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<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">Jennifer,
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<div>Okay I think we are on the same page. My question is that if I set levs to 0, and I say plotted CINsfc, it would be the actual sfc based CIN that is plotted, and not something adjusted to sea level? That is a quantity that varies quasi-horizontally across
the height varying surface itself? </div>
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<div>Mason <br>
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<div style="direction:ltr"><font color="#000000" face="Tahoma" size="2"><b>From:</b> <a href="mailto:gradsusr-bounces@gradsusr.org" target="_blank">gradsusr-bounces@gradsusr.org</a> [<a href="mailto:gradsusr-bounces@gradsusr.org" target="_blank">gradsusr-bounces@gradsusr.org</a>] on behalf of Jennifer Adams [<a href="mailto:jma@cola.iges.org" target="_blank">jma@cola.iges.org</a>]<br>
<b>Sent:</b> Sunday, November 13, 2011 11:48 AM<br>
<b>To:</b> GrADS Users Forum<br>
<b>Subject:</b> Re: [gradsusr] Sfc level in ctl file<br>
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<div>In the documentation, <a href="http://iges.org/grads/gadoc/descriptorfile.html#VARS" target="_blank">
http://iges.org/grads/gadoc/descriptorfile.html#VARS</a> , it says:
<div>"If <i>levs</i> is 0, the variable does not correspond to any vertical level. Surface variables (e.g. sea level pressure) have a
<i>levs</i> value of 0."</div>
<div>If you put a "1" in the levs column, it means the variable has a Z dimension size of 1 and the value corresponds to the first value in the ZDEF statement. </div>
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<div>--Jennifer</div>
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<div>On Nov 13, 2011, at 12:18 PM, Rowell, Mason D. wrote:</div>
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<div>All,<br>
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I was wondering if there were any users of the NARR data in grads that could explain something to me. Several of the variables in the ctl file are only at level 0, like this 'CINsfc 0 156,1,0 '<br>
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I recognize that those with 29 in the first column are defined on all 29 reanalysis levels, but level 0 means what? I just want to make sure that if I can set the level of the data to the sfc that it is a terrain following surface and not 1000 mb adjusted.
Though it seems that 1000 is level 1, and thus level 0 is something special, like the actual surface that is not along any constant pressure sfc.<br>
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Mason <br>
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<div>--</div>
<div>Jennifer M. Adams</div>
<div>IGES/COLA</div>
<div>4041 Powder Mill Road, Suite 302</div>
<div>Calverton, MD 20705</div>
<div><a href="mailto:jma@cola.iges.org" target="_blank">jma@cola.iges.org</a></div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Grad student - PhD, Meteorology<br>University of Oklahoma School of Meteorology - Center for Analysis and Prediction of Storms<br><br>