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[IDV #GTY-591375]: flowvectors have u and v mixed up, can't figure why?

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  • Subject: [IDV #GTY-591375]: flowvectors have u and v mixed up, can't figure why?
  • Date: Mon, 01 Dec 2014 13:31:10 -0700
> > Full Name: brian mapes
> > Email Address: address@hidden
> > Organization: UM
> > Package Version: 5.0u2 build date:2014-10-08 07:05 UTC
> > Operating System: Mac OS X
> > Hardware: Java: home: /Applications/IDV_5.0u2/jre.bundle/Contents/Home/jre 
> > version: 1.7.0_67 j3d:1.6.0-pre9-daily-experimental daily
> > Description of problem: Why did I have to scale these pink vectors by 100 
> > to see them at all?
> > Why are their components mixed up (trade winds are shown as south pointing 
> > vectors)?
> >
> > I know, there are no units on this dataset and there "should" be, but is 
> > the flowvector scaling default 100x out of whack?
> >
> > Thanks for any clues.
> > Brian
> >
> >
> > ------------Help->Details on the flowve3ctors display looks OK. -----------
> >
> > Display: flowvectors - Vector Plan View
> > ?Data:
> > ?Derived quantity: Formula: DerivedGridFactory.createFlowVectors (D1, D2) 
> > Field: flowvectors (Flow Vectors (from u2m & v2m)) from:
> > Field: u2m (eastward wind at 2 m above the displacement height) from: Name: 
> > MERRA 2D-hourly met Description:Geogrid data source
> > Files:
> > dods://goldsmr2.sci.gsfc.nasa.gov/dods/MAT1NXSLV
> > Field: v2m (northward wind at 2 m above the displacement height) from: 
> > Name: MERRA 2D-hourly met Description:Geogrid data source
> > Files:
> > dods://goldsmr2.sci.gsfc.nasa.gov/dods/MAT1NXSLV
> >
> >
> 
> I think the data values of 2 meter wind in this dataset are bad.
> 
> -9.98E8 probably represent missing value.
> 
> 
> Yuan

In certain time steps, there are actually good values and you don't need to do 
100 factors. But I did see in many time step, the 2 meter wind only has the 
value of -9.98E8 and the variable's attribute of missing value is 
9.99999999999E14f. This doesn't make any sense.


Yuan
> >
> >


Ticket Details
===================
Ticket ID: GTY-591375
Department: Support IDV
Priority: Normal
Status: Open