station data / gridded data

I have 2180 tree ring sites with lat(0:2179) and lon(0:2179)
and ringwidth(0:2179,0:99) for (site,time).

I also have a gridded dataset with sfct(0:99,0:359,0:719)
for (time,lat,lon) and lato(0:359) for the latitudes and lono(0:719)
for the longitudes.

For each tree ring site, I want to find within which lat/lon box in the
gridded dataset that it lies and use that sfct. What is the
fastest way to do this, avoiding too many do loops?

Thanks,
Mike
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Received on Fri Jul 14 2006 - 16:16:16 MDT