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 rdf:langString
rdf:langString Sea-Ice Extent North (siextentn) 
rdf:langString siextentn 

data from the linked data cloud