<div dir="ltr">Hi Kai,<div><br></div><div>wrf_cape_2d requires the pressure argument (first argument) to be in units of Pa and the surface pressure argument (6th argument) to be in units of hPa, so double check that. Temperature needs to be in Kelvin. Height is in meters. Water vapor mixing ratio is in units of kg/kg. The error message you are getting is indicating that theta-e is being calculated to 856.03 K, which is obviously nonsensical, so one of your input arrays is in the wrong units, contains missing values, or has a bogus number in it. This algorithm relies on lookup tables, which is why things can go wrong in a hurry if something is not right. If you're still having problems, please reply with the result for printVarSummary on each of your input variables.</div><div><br></div><div>Hope this helps,</div><div><br></div><div>Bill</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 9, 2016 at 8:34 PM, Kai Zhang <span dir="ltr"><<a href="mailto:kzkaizhang@gmail.com" target="_blank">kzkaizhang@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large">Dear NCL support,</div><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large"><br></div><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large">I am currently using function wrf_cape_2d to calculate CIN and CAPE. But I cannot stop getting errors:</div><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large">
<p><span>"capecalc3d: Outside of lookup table bounds. prs,thte= 925.000000000000 </span>856.034700407579"</p><p>I am sure that I got units for each variable correctly. </p><p>It is weird that, if I change "p (unit: Pa)" to "p (unit: hPa)", I can get it run smoothly. But the CIN and CAPE calculated are obviously wrong.</p><p>Do you know why?</p><p><br></p><p>Thanks a lot for your help!</p><p>Best,</p><p>Kai</p></div>
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