<html dir="ltr"><head></head><body style="text-align:left; direction:ltr;"><div>vint(const(mslp,1000), q, 100) is the integrated moisture</div><div><br></div><div>if you want to display a time varying derivative you could use cdiff, </div><div>otherwise, if time is fixed, suppose you would plot derivative at t=2 and suppose dtime=3h, you could:</div><div><br></div><div>d ( vint(const(mslp(t=3),1000),q(t=3),200)-vint(const(mslp(t=1),1000),q(t=1),200) )/(2*3*3600)</div><div><br></div><div>Bye</div><div>Davide</div><div> </div><div><br></div><div>On Tue, 2019-06-04 at 12:14 +0900, lpasmanoranjan wrote:</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><div>Dear Users,</div><div>I am having a problem while computing the time derivative of column integrated moisture, which is:</div><div>(1/g) x ∂/∂t ∫qdp</div><div><br></div><div>I can compute the column integrated moisture as vint(1000,q,100). I can't think the next.</div><div><br></div><div>I appreciate for any kind of help or suggestion in this regard.</div><div>-- </div><div>Kind Regards,</div><div>Mano</div><div>_______________________________________________</div><div>gradsusr mailing list</div><div><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a></div><div><a href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a></div></blockquote></body></html>