Is there the number limit of valid grids for wgt_areasum2 function

Dear all

When I using "wgt_areasum2" function to calculate the area sum of
different oceans, it work well for Pacific Ocean and Indian Ocean,
but for Atlantic Ocean (80W-20E, 0-90N and 70W-20E, 50S-0, it's so
many points with missing value), it just output "nan", I just guess
the possible reason is that the valid grid number ratio of Atlantic
Ocean is smaller than some limit, so, output is "nan", right? If yes,
could you guys give me some useful suggestions?

Best

Jun Cheng
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Received on Wed Sep 17 2008 - 14:53:17 MDT