think of it as saying to create a vector grid where urel is not null :)
------ Original Message ------
From: "Jeffrey Krob - NOAA Federal via gembud" <gembud@xxxxxxxxxxxxxxxx>
To: gembud@xxxxxxxxxxxxxxxx
Sent: 2/11/2020 10:57:35 AM
Subject: [gembud] GEMPAK Script Question
All,
GEMPAK 'newbie' here - came across a script which is passed to the
DG_GRIDN routine as the following:
custar =
'mul(acos(quo(mul(mag(vasv(vecr(urel,0),geo)),quo(urel,mag(vecr(urel,0)))),urel)),RTD)'
Question; concerning the 'vecr(urel,0)' portion, I understand this is a
call to the DV_VECR (S1, S2) routine to create a vector from 2 scalars.
However, with the second argument being a '0', is this only returning
the 'U' portion of the U/V wind vector or is something else going on
here?
Thanks in advance,
Jeff Krob
NOAA/NESDIS
