I'm french and I don't think there is a specific word to describe this.
We commonly use the verb "aérer" which translates to "to ventilate". But when someone uses this term, I think it designates implicitly a short ventilation as described by this German word or your Norwegian one. At least that's what I noticed around me. I don't know of anybody keeping a window open all day long to ventilate when it's cold outside.
I'm french and I don't think there is a specific word to describe this.
We commonly use the verb "aérer" which translates to "to ventilate". But when someone uses this term, I think it designates implicitly a short ventilation as described by this German word or your Norwegian one. At least that's what I noticed around me. I don't know of anybody keeping a window open all day long to ventilate when it's cold outside.