[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[IDV #OBI-892127]: Plotting thickness in 20km NAM - 'select surface' dataset

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [IDV #OBI-892127]: Plotting thickness in 20km NAM - 'select surface' dataset
  • Date: Thu, 22 Jan 2009 10:53:34 -0700
Hi Dave-

The 1000-500 thickness will work in the next update (later today).

Don


> Happy New Year.  Sorry, this fell through the cracks while we
> were trying to get the release out.
> 
> > Full Name: Dave Flory
> > Email Address: address@hidden
> > Organization: Iowa State University
> > Package Version: 2.5 build date:2008-05-08 07:05 UTC
> > Operating System: Windows XP
> > Hardware: Java: home: C:\Program Files\Java\jre1.6.0_07 version: 1.6.0_07 
> > j3d:1.3.2 fcs (build12)
> > Description of problem: I realize I may have jumped the gun on this because 
> > the select surface dataset hasn't
> > been working, but the current state of the data doesn't seem to want to 
> > plot 1000-500mb
> > thickness.  Perhaps an issue with the derived variables for this set?  If I 
> > have indeed
> > jumped the gun, feel free to yell at me...lol.
> 
> The problem is that the grib2 grids have a pressure unit of Pa
> and the derived quantity just uses 500 and 1000 on the native grid
> coordinate.  If you use the Thickness derived quantity and specify
> 50000 and 100000 for the levels, it will give you the thickness.
> However, in either case, it downloads the whole grid and then does
> the subtraction.  You'd be better off doing a sub(a,b) and select
> the appropriate levels in the dialog.  A little more work up front,
> but will be faster.
> 
> I'll look into a fix for both these issues.
> 
> Don


Ticket Details
===================
Ticket ID: OBI-892127
Department: Support IDV
Priority: Emergency
Status: Closed