Sea-Ice Extent North (siextentn)
https://w3id.org/hacid/data/cs/variables/mip/siextentn <https://w3id.org/hacid/onto/data/Variable>
Total area of all Northern-Hemisphere grid cells that are covered by at least 15 % areal fraction of sea ice
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Sea-Ice Extent North (siextentn)
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siextentn