<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">We cannot debug this problem with the information you've given us, because I don't know exactly how you are calling the routine.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Please use our GitHub issues page to submit a bug report and provide a small, clean program that illustrates the error:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default"><a href="https://github.com/NCAR/ncl/issues">https://github.com/NCAR/ncl/issues</a><br></div><div class="gmail_default"><br></div><div class="gmail_default">Thanks,</div><div class="gmail_default"><br></div><div class="gmail_default">--Mary</div><div class="gmail_default"><br></div></div></div><br><div class="gmail_quote"><div dir="ltr">On Thu, Jan 10, 2019 at 9:42 PM nafiseh pegahfar <<a href="mailto:pegahfar@inio.ac.ir">pegahfar@inio.ac.ir</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>
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        Hello,</div>
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        Thank you for your kindly attention.</div>
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        I checked and all units were correct as: </div>
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        <pre style="background-color:rgb(255,255,255);white-space:pre-wrap">level=925,00
TK=300.6299140816899
rv=0.008510922866573187
GPH=723.139880629395
z=0.7325572010323265
p=100078.4522848937</pre>
        <div>
                while the NaN values still exist. The NaN values are occurred at places 
with rv<0.01.</div>
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                 </div>
</div>
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        Best Regards<br>
        =================================<br>
        Nafiseh Pegahfar<br>
        Assistant Professor<br>
        Iranian National Institute for Oceanography and Atmospheric Science<br>
        (<a href="http://www.inio.ac.ir" target="_blank">http://www.inio.ac.ir</a>)<br>
        Phone: (0098)21- 66944873-5 Ext. 224<br>
        Fax: (0098)21- 66944869<br>
        Email: (<a href="mailto:pegahfar@inio.ac.ir" target="_blank">pegahfar@inio.ac.ir</a>)<br>
        (<a href="mailto:pegahfar@ut.ac.ir" target="_blank">pegahfar@ut.ac.ir</a>)<br>
        =================================<br>
        <br>
        <blockquote style="padding-right:0px;padding-left:5px;margin-left:5px;border-left:2px solid rgb(0,0,0);margin-right:0px">
                -----Original Message-----<br>
                From: Mary Haley <<a href="mailto:haley@ucar.edu" target="_blank">haley@ucar.edu</a>><br>
                To: nafiseh pegahfar <<a href="mailto:pegahfar@inio.ac.ir" target="_blank">pegahfar@inio.ac.ir</a>><br>
                Cc: "<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>" <<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>><br>
                Date: Thu, 10 Jan 2019 09:36:22 -0700<br>
                Subject: Re: [ncl-talk] nan value for cape function<br>
                <br>
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                                <div class="gmail_default" style="font-size:small">
                                        Hello,</div>
                                <div class="gmail_default" style="font-size:small">
                                         </div>
                                <div class="gmail_default" style="font-size:small">
                                        I think you need to check your input units again.  You didn't 
indicate exactly how you are calling wrf_cape_3d, but if you read the 
documentation at:</div>
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                                         </div>
                                <div class="gmail_default">
                                        <a href="http://www.ncl.ucar.edu/Document/Functions/Built-in/wrf_cape_3d.shtml" target="_blank">
http://www.ncl.ucar.edu/Document/Functions/Built-in/wrf_cape_3d.shtml</a>
</div>
                                <div class="gmail_default">
                                         </div>
                                <div class="gmail_default">
                                        you will see that that the model pressure values need to be in units of 
Pa, while the units of  surface pressure must be hPa. I'm not sure 
why the function was written this way, but you need to make sure you have 
the correct units.</div>
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                                         </div>
                                <div class="gmail_default">
                                        If you continue to have problems, please respond back to ncl-talk with 
this information. It would help if you could provide a short test program 
that shows the values you are inputting and the incorrect values that are 
coming from the function. Also, we need to know what version of NCL 
you're running. </div>
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                                         </div>
                                <div class="gmail_default">
                                        Thanks,</div>
                                <div class="gmail_default">
                                         </div>
                                <div class="gmail_default">
                                        --Mary</div>
                                <div class="gmail_default">
                                         </div>
                        </div>
                </div>
                <br>
                <div class="gmail_quote">
                        <div dir="ltr">
                                On Tue, Jan 8, 2019 at 9:23 PM nafiseh pegahfar <<a href="mailto:pegahfar@inio.ac.ir" target="_blank">pegahfar@inio.ac.ir</a>> wrote:</div>
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                                                <pre style="white-space:pre-wrap">To whom it may concern,

I used "wrf_cape_3d" function to calculate Cape. for this aim I 
used 3D vand 
2D values. unfortunately in some points (based on lat/lon)  NaN value for 
cape is seen. I am sure that all data have correct units. Input values for a 


point is reported as below:

cape=9.969209968386869e+36

level=92500
TK=300.6299140816899
rv=0.008510922866573187
GPH=723.139880629395
z=0.7325572010323265
p=100078.4522848937
I think where rv value is less that 0.01, this nan value appears.
please help me to overcome to these nan values

</pre>
                                        </div>
                                        <div>
                                                Best Regards<br>
                                                =================================<br>
                                                Nafiseh Pegahfar<br>
                                                Assistant Professor<br>
                                                Iranian National Institute for Oceanography and Atmospheric Science<br>
                                                (<a href="http://www.inio.ac.ir" target="_blank">
http://www.inio.ac.ir</a>)<br>
                                                Phone: (0098)21- 66944873-5 Ext. 224<br>
                                                Fax: (0098)21- 66944869<br>
                                                Email: (<a href="mailto:pegahfar@inio.ac.ir" target="_blank">
pegahfar@inio.ac.ir</a>)<br>
                                                (<a href="mailto:pegahfar@ut.ac.ir" target="_blank">
pegahfar@ut.ac.ir</a>)<br>
                                                =================================</div>
                                </div>
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