Re: Plotting Antarctica

Hi Mary,
     I am afraid that my experience does not agree with you. I am
attaching 2 plots of the Antarctic peninsula.
The contoured field is a rather coarsely-defined plot of current topography.
The outline given by Earth..3 has a lot of blue within the boundary
because the outline goes along the edge of the ice-shelf. (in
particular the blue area at the bottom of the plot is the Ronne iceshelf)
The outline given by Earth..4 is much more complex and is showing the
edge of the Ronne icesheet and the edge of the land beneath the iceshelf.

The documentation you referred me to says that the ice shelves "can be
made to appear or not as desired". I assume that this might perhaps be
done with mpOutlineSpecifiers, so I will look into that.
Rosemarie
PS In case anyone else plots Antarctica: Using LowRes gives inconsistent
results showing the outer edge of the Ronne iceshelf and the land edge
under the Ross iceshelf

On 23/02/2011 10:44 AM, Mary Haley wrote:
> Rosemarie,
>
> I believe the Earth..3 database should be giving you the edge of the land, and not the ice shelves.
>
> If you go to the page that lists all the areas for Earth..3, you won't see any mention of ice shelves:
>
> http://www.ncl.ucar.edu/Document/HLUs/Classes/MapPlotData4_1_earth_3.shtml
>
> On the Earth..4 page, however, you do:
>
> http://www.ncl.ucar.edu/Document/HLUs/Classes/MapPlotData4_1_earth_4.shtml
>
> --Mary
>
>
> On Feb 22, 2011, at 12:44 PM, Rosemarie Drummond wrote:
>
>> If I plot a map of Antarctica and specify mpDataBaseVersion = "Ncarg4_1"
>> then if I set mpDataSetName = "Earth..3", it will plot the edge of the
>> ice-shelves
>> but if I set mpdataSetName = "Earth..4", it will plot both the edge of
>> the land below the ice-shelves and the edge of the ice-shelves.
>>
>> I am just wondering if there is a combination that I have missed, that
>> would just plot the edge of the land?
>>
>> Thanks
>> Rosemarie
>> PS I am using gsn_csm_contour_map_polar but I don't suppose that makes
>> any difference in this.
>>
>> --
>> Dr Rosemarie Drummond
>> rmarie@atmosp.physics.utoronto.ca
>>
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-- 
Dr Rosemarie Drummond
rmarie@atmosp.physics.utoronto.ca

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