<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yiv6253253814"><div class="qtdSeparateBR">Hi Marry:</div></div><div class=".yiv6253253814yahoo_quoted" id="yui_3_16_0_1_1443135925931_4496"><div id="yiv6253253814yui_3_16_0_1_1443135925931_3182" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"><div id="yiv6253253814yui_3_16_0_1_1443135925931_3181" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"><div class="yiv6253253814y_msg_container" id="yiv6253253814yui_3_16_0_1_1443135925931_3211"><div id="yiv6253253814"><div id="yiv6253253814yui_3_16_0_1_1443135925931_3210"><div id="yiv6253253814yui_3_16_0_1_1443135925931_3209" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><div class="yiv6253253814yahoo_quoted" id="yiv6253253814yui_3_16_0_1_1442897203382_21589" style="display: block;"><div id="yiv6253253814yui_3_16_0_1_1442897203382_21588" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"><div id="yiv6253253814yui_3_16_0_1_1442897203382_21587" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"><div class="yiv6253253814y_msg_container" id="yiv6253253814yui_3_16_0_1_1442897203382_21633"><div id="yiv6253253814"><div id="yiv6253253814yui_3_16_0_1_1442897203382_21632"><div id="yiv6253253814yui_3_16_0_1_1442897203382_21631" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><div id="yiv6253253814yui_3_16_0_1_1442897203382_15583"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15582" dir="ltr">I sent this ncl question to you because I am not sure if I have sent it to ncl-talk successfully. Pardon me if you have received it.</div><div class="qtdSeparateBR"><br><br></div><div class="yiv6253253814yqt9394687552" id="yiv6253253814yqtfd75614"><div id="yiv6253253814yui_3_16_0_1_1442897203382_15581" dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15425" dir="ltr">I have a few data of air T, P, and RH. I used mixhum_ptrh and relhum to recalculate RH. Both the RH should be the same, however, large differences were found.</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15446" dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15551" dir="ltr">Can you please tell me what is the reason? Thanks!</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15552" dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15576" dir="ltr">Regards</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15575" dir="ltr">ED</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15635" dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15636" dir="ltr">The codes are:</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15445" dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15444" dir="ltr">;*******************************************<br id="yiv6253253814yui_3_16_0_1_1442897203382_15456" clear="none">begin<br id="yiv6253253814yui_3_16_0_1_1442897203382_15457" clear="none">;*******************************************<br id="yiv6253253814yui_3_16_0_1_1442897203382_15458" clear="none">p = (/25132.156,27032.215,33876.102,39419.887/) ;Pa<br id="yiv6253253814yui_3_16_0_1_1442897203382_15459" clear="none">t = (/229.690,228.809,225.332,231.278/) ;K<br id="yiv6253253814yui_3_16_0_1_1442897203382_15460" clear="none">rh = (/2.008,1.884,62.117,103.124/) ;%</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15475" dir="ltr">q = mixhum_ptrh (todouble(p/100.), todouble(t), todouble(rh), 1)<br id="yiv6253253814yui_3_16_0_1_1442897203382_15463" clear="none">rh1 = relhum (todouble(t),todouble(q),todouble(p))<br id="yiv6253253814yui_3_16_0_1_1442897203382_15464" clear="none">print(rh1)<br id="yiv6253253814yui_3_16_0_1_1442897203382_15465" clear="none">print(rh)<br id="yiv6253253814yui_3_16_0_1_1442897203382_15466" clear="none">end</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15562" dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15563" dir="ltr">After run the codes:</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15650" dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15494" dir="ltr"> Copyright (C) 1995-2011 - All Rights Reserved<br id="yiv6253253814yui_3_16_0_1_1442897203382_15495" clear="none"> University Corporation for Atmospheric Research<br id="yiv6253253814yui_3_16_0_1_1442897203382_15496" clear="none"> NCAR Command Language Version 6.0.0<br id="yiv6253253814yui_3_16_0_1_1442897203382_15497" clear="none"> The use of this software is governed by a License Agreement.<br id="yiv6253253814yui_3_16_0_1_1442897203382_15498" clear="none"> See <a id="yiv6253253814yui_3_16_0_1_1442897203382_15499" href="http://www.ncl.ucar.edu/" target="_blank" rel="nofollow" shape="rect">http://www.ncl.ucar.edu/</a> for more details.</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15493" dir="ltr"><br id="yiv6253253814yui_3_16_0_1_1442897203382_15500" clear="none">Variable: rh1<br id="yiv6253253814yui_3_16_0_1_1442897203382_15501" clear="none">Type: double<br id="yiv6253253814yui_3_16_0_1_1442897203382_15502" clear="none">Total Size: 32 bytes<br id="yiv6253253814yui_3_16_0_1_1442897203382_15503" clear="none"> 4 values<br id="yiv6253253814yui_3_16_0_1_1442897203382_15504" clear="none">Number of Dimensions: 1<br id="yiv6253253814yui_3_16_0_1_1442897203382_15505" clear="none">Dimensions and sizes: [4]<br id="yiv6253253814yui_3_16_0_1_1442897203382_15506" clear="none">Coordinates:<br id="yiv6253253814yui_3_16_0_1_1442897203382_15507" clear="none">(0) 2.960429399791643<br id="yiv6253253814yui_3_16_0_1_1442897203382_15508" clear="none">(1) 2.796223142965527<br id="yiv6253253814yui_3_16_0_1_1442897203382_15509" clear="none">(2) 94.57799164378163<br id="yiv6253253814yui_3_16_0_1_1442897203382_15510" clear="none">(3) 150.3954363205561</div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15524" dir="ltr"><br id="yiv6253253814yui_3_16_0_1_1442897203382_15512" clear="none">Variable: rh<br id="yiv6253253814yui_3_16_0_1_1442897203382_15513" clear="none">Type: float<br id="yiv6253253814yui_3_16_0_1_1442897203382_15514" clear="none">Total Size: 16 bytes<br id="yiv6253253814yui_3_16_0_1_1442897203382_15515" clear="none"> 4 values<br id="yiv6253253814yui_3_16_0_1_1442897203382_15516" clear="none">Number of Dimensions: 1<br id="yiv6253253814yui_3_16_0_1_1442897203382_15517" clear="none">Dimensions and sizes: [4]<br id="yiv6253253814yui_3_16_0_1_1442897203382_15518" clear="none">Coordinates:<br id="yiv6253253814yui_3_16_0_1_1442897203382_15519" clear="none">(0) 2.008<br id="yiv6253253814yui_3_16_0_1_1442897203382_15520" clear="none">(1) 1.884<br id="yiv6253253814yui_3_16_0_1_1442897203382_15521" clear="none">(2) 62.117<br id="yiv6253253814yui_3_16_0_1_1442897203382_15522" clear="none">(3) 103.124<br id="yiv6253253814yui_3_16_0_1_1442897203382_15523" clear="none"></div><div dir="ltr"><br clear="none"></div><div id="yiv6253253814yui_3_16_0_1_1442897203382_15595" dir="ltr"><br id="yiv6253253814yui_3_16_0_1_1442897203382_15467" clear="none"></div></div></div></div></div><div class="yiv6253253814yqt9394687552" id="yiv6253253814yqtfd08832"><br clear="none"><br clear="none"></div></div><div class="yiv6253253814yqt9394687552" id="yiv6253253814yqtfd57568"> </div></div><div class="yiv6253253814yqt9394687552" id="yiv6253253814yqtfd50323"> </div></div><div class="yiv6253253814yqt9394687552" id="yiv6253253814yqtfd03245"> </div></div><div class="yiv6253253814yqt9394687552" id="yiv6253253814yqtfd13460"> </div></div></div></div><br clear="none"><br clear="none"></div> </div> </div> </div></div></body></html>