20050104: wshr function

• To: Christopher Hennon <Christopher.Hennon@xxxxxxxx>
• Subject: 20050104: wshr function
• From: Steve Chiswell <chiz@xxxxxxxxxxxxxxxx>
• Date: Tue, 04 Jan 2005 10:31:40 -0700

On Tue, 2005-01-04 at 10:22, Christopher Hennon wrote:

Hello,
Can anyone tell me why gddiag needs a 'TMPK' grid to calculate the
vertical wind shear of a layer?

TMPK is used in computation of THTA for the layer to arrive at DZ
in pressure coordinates. see equation used in:
$NAWIPS/doc/User_guide/pdf/apxB1.pdf

Steve Chiswell
Unidata User Support

GDFILE  = wind.grd
GDOUTF = wind.grd
GFUNC  = wshr(wnd)
GDATTIM = 990101/0000
GLEVEL  = 200:850
GVCORD = PRES
GRDNAM = wshr

GPACK =

GDDIAG > r
[DG -7] Input grid TMPK ^990101/0000 @200 %PRES in WSHR cannot be
found.

The grid file contains U and V winds at 200 and 850 mb.  Thanks.

Chris

--
--------------------------------------------------------
Christopher C. Hennon
Postdoctoral Fellow
UCAR Visiting Scientist Program

NOAA TPC/National Hurricane Center
11691 SW 17 St.
Miami, FL  33165

Phone: (305) 229-4429
Fax   :   (305) 553-1901
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    • From: Christopher Hennon