<div dir="ltr"><div dir="ltr"><div dir="ltr">The latest release: 6.6.2:    <a href="https://www.ncl.ucar.edu/current_release.shtml"><b>https://www.ncl.ucar.edu/current_release.shtml</b></a><br><br>    <a href="https://www.ncl.ucar.edu/Document/Functions/Contributed/shear_stretch_deform.shtml"><b>shear_stretch_deform</b></a> - Using spherical harmonics, estimate the kinematic shear-deformation, stretch-deformation and total-deformation of a global horizontal (east-west) wind field.<br><br>    <a href="https://www.ncl.ucar.edu/Document/Functions/Contributed/shear_stretch_deform_cfd.shtml"><b>shear_stretch_deform_cfd</b></a> - Using centered-finite-differences, estimate the kinematic shear-deformation, stretch-deformation and total-deformation of a global or regional horizontal (east-west) wind field<br>~                                                                            <br></div><div dir="ltr"><br></div><div dir="ltr"><a href="https://www.ncl.ucar.edu/Applications/gradients.shtml"><b>https://www.ncl.ucar.edu/Applications/gradients.shtml  </b></a></div><div dir="ltr"><br></div><div>See the<b> shear_stretch_deform_1.ncl </b>example.</div><div><br></div><div>The codes are located in contributed.ncl</div><div><br></div><div>You could look at these and, possibly, modify as needed.</div><div><br></div><div>Good Luck<br></div><div><b></b></div><div><b></b><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 2, 2019 at 5:28 AM Barry Lynn <<a href="mailto:barry.h.lynn@gmail.com">barry.h.lynn@gmail.com</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 dir="ltr">Hi:<div><br></div><div>You need to have someone from the NCL "team" send you the fortran code, and then you can edit it and use "WRAPIT" to obtain the terms you want.</div><div><br></div><div>Barry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 2, 2019 at 10:19 AM Lyndz <<a href="mailto:olagueralyndonmark429@gmail.com" target="_blank">olagueralyndonmark429@gmail.com</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 dir="ltr"><div dir="ltr" class="gmail-m_-569873841723821079gmail-m_2128679823069494675gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Dear NCL experts,</div><div><br></div><div>I have been using the divergence (via spherical harmonics) routine in NCL:</div><div><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/uv2dvF-1.shtml" target="_blank">https://www.ncl.ucar.edu/Document/Functions/Built-in/uv2dvF-1.shtml</a><br></div><div><br></div><div>Based on previous literatures, the divergence can be decomposed to its directional (diffluence) and speed (stretching) components (natural coordinates).</div><div><br></div><div><a href="https://www.weather.gov/media/wrh/online_publications/TAs/ta9139.pdf" target="_blank">https://www.weather.gov/media/wrh/online_publications/TAs/ta9139.pdf</a><br></div><div><a href="http://www.inscc.utah.edu/~steenburgh/classes/5110/lecture_notes/divergence+deformation.pdf" target="_blank">http://www.inscc.utah.edu/~steenburgh/classes/5110/lecture_notes/divergence+deformation.pdf</a><br></div><div><br></div><div>[1] Is it possible to extract these terms in NCL?</div><div>[2] If yes, I would like to ask for suggestions on how to do this in NCL.</div><div><br></div><div>Sincerely,</div><div><br></div><div>Lyndz</div></div></div></div></div></div></div></div></div></div></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-569873841723821079gmail_signature"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>
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