<div dir="ltr">He stated it's 1 KM MSL.<div><br></div><div><br><div><br></div><div><span style="font-family:arial,sans-serif;font-size:13px">"However, the question of AGL or MSL depends on your model data output -</span><br style="font-family:arial,sans-serif;font-size:13px">
<span style="font-family:arial,sans-serif;font-size:13px">if it compensates the pressure height. GFS IIRC does not do that, so it</span><br style="font-family:arial,sans-serif;font-size:13px"><span style="font-family:arial,sans-serif;font-size:13px">would be MSL.</span><br style="font-family:arial,sans-serif;font-size:13px">
<br style="font-family:arial,sans-serif;font-size:13px"><span style="font-family:arial,sans-serif;font-size:13px">To understand the calculation, you can check the original math from our</span><br style="font-family:arial,sans-serif;font-size:13px">
<span style="font-family:arial,sans-serif;font-size:13px">website:</span><br style="font-family:arial,sans-serif;font-size:13px"><a href="http://www.saakeskus.fi/grads-scripts/63-storm-relative-helicity-0-3km" target="_blank" style="font-family:arial,sans-serif;font-size:13px">http://www.saakeskus.fi/grads-scripts/63-storm-relative-helicity-0-3km</a>"<br>
</div></div><div><br></div><div>So in order to calculate 0-1 KM shear it has to be 0-1 KM AGL?</div><div><br></div><div><br></div><div>Thanks.</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">
On Fri, Sep 6, 2013 at 1:30 PM, Jeff Duda <span dir="ltr"><<a href="mailto:jeffduda319@gmail.com" target="_blank">jeffduda319@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">I don't use openGrads, so there may be some specifics I'm not aware of. uVAR and vVAR are just dummy names for the u- and v-components of the wind. The inaccuracies are probably due to the exact specifics with how the 0-1 km shear is computed in the script. One big question is how is the 1 km layer wind field being computed? Is it just 1 km MSL or 1 km AGL? Those are things you need to find out. I recommend asking the authors whose email addresses are given on the linked page.<br>
<br>Jeff<br></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div class="h5">On Fri, Sep 6, 2013 at 12:20 PM, Nimrod Micael <span dir="ltr"><<a href="mailto:nmicael@aggies.ncat.edu" target="_blank">nmicael@aggies.ncat.edu</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><h2 style="color:rgb(147,125,0);font-size:16px;font-family:'bitstream vera sans',verdana,sans-serf">
<a name="140f4534ed44620b_140f44d21cee3a1f_srh1km_uvar_vvar_"><strong>srh1km</strong>(<em>uVAR,vVAR</em>)</a></h2><div>What is uVAR and vVAR? I dont have those variables. </div>
<div><br></div><div><a href="http://opengrads.org/doc/udxt/saakeskus/" target="_blank">http://opengrads.org/doc/udxt/saakeskus/</a><br></div><div><br></div><div>I tried replacing uVar and vVar with u and v wind but I am getting some inaccuracies with the 0-1 KM shear. Can someone help me out?</div>
<div><br></div><div>Thanks. </div><span><font color="#888888"><div><br></div>-- <br>Nimrod Micael
</font></span></div>
<br></div></div>_______________________________________________<br>
gradsusr mailing list<br>
<a href="mailto:gradsusr@gradsusr.org" target="_blank">gradsusr@gradsusr.org</a><br>
<a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
<br></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><br>-- <br>Jeff Duda<br>Graduate research assistant<br>University of Oklahoma School of Meteorology<br>Center for Analysis and Prediction of Storms<br>
</font></span></div>
<br>_______________________________________________<br>
gradsusr mailing list<br>
<a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>
<a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>Nimrod Micael
</div>