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Land-Sea Mask ERA-Interim

Added by paolo de luca almost 5 years ago

Hi,

I need to apply the ERA-Interim land-sea mask to a given variable so that the ocean gridpoints will be eventually excluded or set to NaN.

I found this very helpful https://code.mpimet.mpg.de/boards/1/topics/2920

So that the following code quite works

cdo -f nc -setmissval,0 -mul -eqc,0 mask.nc input.nc output.nc

The problem is that the ERA-Interim land-sea mask assigns 0 to sea and 1 to land, which is the opposite case asked in the above question.

How can I adapt the code to my case with 0 = sea and 1 = land?
Thanks


Replies (3)

RE: Land-Sea Mask ERA-Interim - Added by paolo de luca almost 5 years ago

here's the ERA-Interim Land-Sea Mask (taken from https://apps.ecmwf.int/datasets/data/interim-full-invariant/) and a sample of t2m ERA-Interim global dataset.

RE: Land-Sea Mask ERA-Interim - Added by Karin Meier-Fleischer almost 5 years ago

Hi Paolo,

cdo -f nc -setctomiss,0 -mul ERA-Interim_land_sea_mask.nc ERA-Interim_t2m_sample.nc output.nc

-Karin

RE: Land-Sea Mask ERA-Interim - Added by paolo de luca almost 5 years ago

Dear karin,

it works :D

Thank you
paolo

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