Hi Ben,
It looks like your regional model has 2D latitudes and longitudes, and thus is
on a curvilinear grid. NCL can handle this, but you have to assign some
attributes to your data array "x", using the 2 arrays you sent us printVarInfo
info about:
x@lon2d = lon2d
x@lat2d = lat2d
When you plot x, NCL will then recognize that you have 2D lats/lons.
>4) Is the correct data for the GCM extracted? Since the lon is
>from 0 to 360 for the data, is NCL able to identify the lon value
>corresponding to -90.0246 (minlon) and -57.9754 (maxlon)?
Yes, NCL is able to recognize the negative longitudes when plotting, even though
your GCM longitudes go from 1->360...
Adam
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>Date: Tue, 18 Jan 2005 15:54:31 -0500
>From: Benjamin Lamptey <lamptey@essc.psu.edu>
>To: ncl-talk@ucar.edu
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>Hello,
>I am comparing a GCM and a regional model. The longitudes in the
>go from 1 to 360.
>
>2) I have the following from the regional model
>
>==========> printVarInfo: lat2d
>
>Variable: x (parameter)
>Type: float
>Total Size: 11776 bytes
> 2944 values
> Number of Dimensions: 2
> Dimensions and sizes: [64] x [46]
> Coordinates:
> (0) Minimum: 34.8703 Maximum: 50.3709
>
>
>(0) ==========> printVarInfo: lon2d
>
>
>Variable: x (parameter)
>Type: float
>Total Size: 11776 bytes
> 2944 values
> Number of Dimensions: 2
> Dimensions and sizes: [64] x [46]
> Coordinates:
> (0) Minimum: -90.0246 Maximum: -57.9754
>
>3) So for the GCM resources, I do the following
>
> gres@mpMinLatF = minlat
> gres@mpMaxLatF = maxlat
> gres@mpMinLonF = minlon
> gres@mpMaxLonF = maxlon
>
>The tickmarks for both the GCM and the regional model indicate that
>the same geographical region is being plotted.
>
>4) Is the correct data for the GCM extracted? Since the lon is
>from 0 to 360 for the data, is NCL able to identify the lon value
>corresponding to -90.0246 (minlon) and -57.9754 (maxlon)?
>
>The plots look too different. I want to be sure I am not making a
>mistake in plotting.
>
>Thanks
>Ben
>--
>
>
>Benjamin L. Lamptey Phone: (814) 865-9911 (office)
>Pennstate (EMS Environment Institute) (814) 237-8193 (home)
>2217 Earth-Engineering Sciences Bldg Fax : (814) 865-3191
>University Park, PA 16802 WWW:http://www.essc.psu.edu/~lamptey
>
>
>
>
>----- End forwarded message -----
>
>--
>
>
>Benjamin L. Lamptey Phone: (814) 865-9911 (office)
>Pennstate (EMS Environment Institute) (814) 237-8193 (home)
>2217 Earth-Engineering Sciences Bldg Fax : (814) 865-3191
>University Park, PA 16802 WWW:http://www.essc.psu.edu/~lamptey
>
>
>
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-------------------------------------------------------------
Adam Phillips email: asphilli@ucar.edu
Climate and Global Dynamics Division tel: (303) 497-1726
National Center for Atmospheric Research fax: (303) 497-1333
P.O. Box 3000
Boulder, CO 80307-3000 http://www.cgd.ucar.edu/~asphilli
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