[ncl-talk] Mottled output from gsn_csm_contour_map

[Rick Brownrigg]

Hi,

I don't fully understand how the data are being computed, but the output
file appears to be rather sparse, and that is likely the cause of the
mottled appearance.  Attached is a "CellFill" version of the plot --
CellFill more nearly shows the grid cells.

And If I print sections of the ShowDays variable, its very typically like
below; lots of missing-values interspersed with actual values.

I'm not much help here, but hopefully this provides some insight...
Rick

285,250)    -9999
(286,0)    6.2
(286,1)    -9999
(286,2)    7.4
(286,3)    -9999
(286,4)     8
(286,5)    -9999
(286,6)    7.9
(286,7)    -9999
(286,8)    10.22222
(286,9)    -9999
(286,10)    8.7
(286,11)    -9999
(286,12)     9
(286,13)    -9999
(286,14)     8
(286,15)    -9999
(286,16)    10.1
(286,17)    -9999
(286,18)    8.4
(286,19)    -9999
(286,20)    11
(286,21)    -9999
(286,22)    8.454545
(286,23)    -9999
(286,24)    11.5
(286,25)    -9999
(286,26)    9.363636
(286,27)    -9999
(286,28)     9
(286,29)    -9999
(286,30)    9.5
(286,31)    -9999
(286,32)    9.272727
(286,33)    -9999
(286,34)    9.3
(286,35)    -9999
(286,36)    8.5
(286,37)    -9999
(286,38)    8.2
(286,39)    -9999
(286,40)    7.636364
(286,41)    -9999


On Thu, Aug 17, 2017 at 9:37 AM, Burakowski, Elizabeth <
Elizabeth.Burakowski at unh.edu> wrote:

> Hi ncl-talk,
>
>
> I am trying to create a map showing the number of days with snow
> depth greater than 200 mm from SNODAS files.  I have two scripts attached:
>
>
> (1) subsetSNODAS_avgSNWDAYS.ncl
>
> - subsets a smaller region from nation SNODAS domain,
>
> - calculates the number of days with snow depth greater than user defined
> threshold
>
> - calculates 2004-2017 average number of days with snow depth greater than
> threshold
>
> - creates .nc file with 2004-2017 average
>
> I have uploaded a few .nc source SNODAS files that serve as input to the
> subset script and the resulting 2004-2017 .nc file to the ncl-talk ftp
> site.
>
>
> (2) plotNESNODAS_snowdays.ncl
>
> - plots the output .nc file produced in subsetSNODAS_avgSNWDAYS.ncl
>
> - this is a separate script because the subset script takes a while to run
> on the full time series for large regions.
>
>
> Thanks,
>
>
> Liz.
>
>
>
> Dr. Elizabeth A Burakowski
> Research Assistant Professor
> Earth Systems Research Center &
> Institute for the Study of Earth, Oceans, and Space
> University of New Hampshire
> 8 College Road Durham, NH 03824
> 603-862-1796 <(603)%20862-1796>
> elizabeth.burakowski at unh.edu
>
> _______________________________________________
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>
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