[ncl-talk] Regridding reananlysis 2 data error (NetCDF sub sectional data)

[Mary Haley]

The error is telling you exactly what the problem is.

This function rcm2rgrid expects the first two arguments to be 2D lat/lon
arrays, because this routine is regridding from a curvilinear grid to a
rectilinear grid.  Curvilinear grids are represented by 2D lat/lon arrays.
You are giving it 1D lat/lon arrays, which represent a rectilinear grid.

You may want to use ESMF_regrid:

UNTESTED:

  opt = True
  opt at SrcGridLat  = lat2d   ; this variable should be renamed since it's
not 2D
  opt at SrcGridLon  = lon2d   ; ditto
  opt at SrcRegional = False   ; set to False if your source grid is regional

  opt at DstGridLat  = lat
  opt at DstGridLon  = lon
  opt at DstRegional = False   ; ditto
  opt at SrcMask@d   = where(.not.ismissing(var),1,0)  ; only necessary if u11
contains missing values
  rtrmm = rcm2rgrid_Wrap(u11,opt)

--Mary



On Wed, Apr 27, 2016 at 12:30 PM, Saurabh Singh <saurabhsingh123op at gmail.com
> wrote:

> Dear sir I am trying to interpolate Reanalysis-II data to TRMM data in
> order to find correlation;
>
> NCL Version 6.3.0
> OS: UBUNTU 15.10
>
> ncl_filedum uwnd.nc
>
>
>
>
>
>
>
> *float lat ( lat )         units :        degrees_north
> actual_range : ( 14.2855, -14.2855 )         long_name :
> Latitude         standard_name :        latitude         axis : Y
> coordinate_defines :   point*
>
>
>
>
>
>
>
> *      float lon ( lon )         units :        degrees_east
> long_name :    Longitude         actual_range : ( 90, 123.75 )
> standard_name :        longitude         axis : X
> coordinate_defines :   point*
>
>
>
>
>
>
> *      double time ( time )         units :        hours since 1800-1-1
> 00:00:0.0         long_name :    Time         actual_range : ( 1753152,
> 1823256 )         delta_t :      0000-00-01 00:00:00         standard_name
> :        time*
>
>
> Thereafter I use the following code :
>
>  a=addfile("/home/cee2/SV10.nc","r")
>
> y=a->lat
>  u10=a<-uwnd
>  u11=u10(:,0,:,:)
> lat2d=a->lat
>  lon2d=a->lon
>
>  ; Global TRMM grid .... Change for the Reanalysis region
>    nlat       = 400
>    mlon       = 1440
>    lat        = ispan(0,nlat-1,1)*0.25 -  49.875
>    lon        = ispan(0,mlon-1,1)*0.25 - 179.875
>
>
> lat!0     = "lat"
>   lat at units = "degrees_north"
>
> ;  lon       = fspan(-179.875, 179.875, nlon-1)
>   lon!0     = "lon"
>   lon at units = "degrees_east"
>
> ; regrid (bilinear)
>   wks = gsn_open_wks("png","resize")
>   rtrmm = rcm2rgrid_Wrap(lat2d,lon2d,u11,lat,lon,0)
>
> *However I get the following error :*
>
>
> *fatal:Number of dimensions in parameter (0) of (rcm2rgrid_Wrap) is (1),
> (2) dimensions were expectedfatal:["Execute.c":8573]:Execute: Error
> occurred at or near line 24*
>
> --
> With regards
> Saurabh Kumar singh
>
>  *P** : * *Please consider the environment before printing this e-mail*
>
>
>
>
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