[ncl-talk] calculating gradients in ocean areas with land

[Sam McClatchie]

Colleagues

I have a general question where I suspect the answer is "no".

Problem:

I would like to calculate temperature gradients from satellite measured 
SST in ocean areas around a land mass (see <http://u.pc.cd/K62rtalK> for 
a plot of the SST data). The SST data matrix has missing values. Using 
the landsea_mask and mask functions, I have confirmed that the missing 
data (data at _FillValue) are at grid points over land. If I remove the 
missing values, I destroy the regular grid.

Question: Does NCL have a function for calculating gradients in ocean 
areas with land? Or are the various functions designed to calculate 
gradients in the atmosphere?

Best fishes

Sam

-- 
email signature Sam McClatchie (fisheries oceanographer)
& Elena Turin (accounting & auditing)
FishOcean Enterprises www.fishocean.info <http://www.fishocean.info>
38 Upland Rd, Huia, Auckland 0604, New Zealand
cell: 027 752 8495


“The three great elemental sounds in nature are the sound of rain,
the sound of wind in a primeval wood, and the sound of outer ocean on a 
beach.
I have heard them all, and of the three elemental voices,
that of ocean is the most awesome, beautiful and varied.”

― Henry Beston, The Outermost House: A Year of Life on the Great Beach 
of Cape Cod
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