<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Arlindo da Silva</b> <span dir="ltr"><<a href="mailto:arlindo.dasilva@gmail.com">arlindo.dasilva@gmail.com</a>></span><br>
Date: Fri, Jul 17, 2009 at 10:03 PM<br>Subject: Re: Velocity Potential.<br>To: <a href="mailto:Richard_anyah@ncsu.edu">Richard_anyah@ncsu.edu</a><br><br><br><div class="gmail_quote"><div class="im">On Fri, Jul 17, 2009 at 3:35 PM, Richard anyah <span dir="ltr"><<a href="mailto:roanyah@hotmail.com" target="_blank">roanyah@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div><br>Dear all,<br> <br>Does any one have an idea of how to compute velocity potential from RCM model outputs that is having a predefined domain i.e from lat (10S- 10N) and lon (20E -47E). I know "fish_chi" only function with global cordinates. </div>
<div> </div></div></blockquote><div><br></div></div><div>The classic algorithm "fish" implements requires a global domain. There is a variational algorithm for doing such calculation on a local domain, but such algorithm is yet to be implemented as an opengrads extension. I have the references and a general idea of how this could implemented. We had a volunteer earlier on to whom I sent the materials but never heard anything back. </div>
<div><br></div><div>If you or anybody out there in gradsusr land would like to take on this regional psi/chi project drop me a line and I'll get you going. Really, you don't have to understand how to write opengrads extensions (I can help with that), but you need some mathematical background and some programming skills in C or Fortran. You could also prototype this in python or matlab. You can work on Linux, Mac OS X, or even Windows.</div>
<div><br></div><div> Arlindo</div></div><br clear="all"><font color="#888888"><br>-- <br>Arlindo da Silva<br><a href="mailto:dasilva@alum.mit.edu" target="_blank">dasilva@alum.mit.edu</a><br>
</font></div><br><br clear="all"><br>-- <br>Arlindo da Silva<br><a href="mailto:dasilva@alum.mit.edu">dasilva@alum.mit.edu</a><br>