Re: interpolate (and extrapolate) SST data over land

To fill in missing values using linear interpolation, "linmsg"
does exactly that. Example 3 of the following NCL manual page
explains how to do it:
http://www.ncl.ucar.edu/Document/Functions/Built-in/linmsg.shtml
It works for me.

Sang-ki

> Hi,
>
> I have a Hadley center SST which will go through a complex
> interpolation process using CAM3 SST generation package.
>
> My problem is that the CAM3 SST generation package does not
> allow any missing values over land grid points in the original
> Hadley center SST file. So, I need to interpolate (and
> extrapolate) SST data over land and ice regions. I cannot simply
> put any value on land points because CAM3 uses "land fraction"
> concept. In fact, I should be very careful with the
> interpolation because some unrealistic SST can be created
> over the coastal region. I found some discussion about this and
> related topics from ncl-talk, but not enough for me to do it
> myself.
>
> Could you tell me how this can be done in NCL? It will be also
> very helpful to know how this is done in NCAR, and NCDC/NOAA
> (if anybody know)........
>
> Thank you.
>
> Sang-ki

-- 
----------------------------------------------------------------------
Dr. Sang-ki Lee
RSMAS/CIMAS
University of Miami
4600 Rickenbacker Causeway
Miami, FL 33149 USA
Tel) 305-361-4521
Fax) 305-361-4412
E-mail) sang-ki.lee_at_noaa.gov
Homepage) http://www.aoml.noaa.gov/phod/people/sklee.html
----------------------------------------------------------------------
Mailing-address:
Dr. Sang-ki Lee
AOML/PHOD
4301 Rickenbacker Causeway
Miami, FL, 33149 USA
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