Sentences with phrase «land mask»

With the new land mask feature an external file (input / step5mask which is the same format as the newly output work / step5mask) specifies whether to use land or ocean data for each cell.
[edit: Yes, Steven Mosher pointed me at one; so expect a post using a real land mask soon]
Some of it might be related to the latitudinal masks but you'd probably want to look at the full lat - lon data with consistent land masks to do this properly.
I don't actually have a true land mask to hand (a list of cells that cover the Earth's land surface), but I can do a normal run of ccc - gistemp that uses both land and ocean data and use the generated mask.
The land mask colours indicate human habitation, with lighter colours marking areas with high population density.
The NASA GISS record had a land mask applied; the HadCRU curve is the simple land average, not the hemispheric - weighted one.
I added a land mask feature to ccc - gistemp.
The land mask is used In Step 5, where land and ocean series are combined into zonal averages.
So accepting that their might be some minor issues with islands and so on, we can go on to do a run of ccc - gistemp using this land mask:
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