Termosfæren

Termosfæren er laget i jordens atmosfære, der starter ca. 80 km over jordens overflade, hvor temperaturen stiger med højden. Temperaturstigningen er forårsaget af absorption af UV strålerne, som solen udsender og af de kemiske processer der sker pga. UV absorption (ionisering, dissociation), hvilket er ekstra kilde til varme. Termosfæren ender med termopause zonen i jordens atmosfære, her stiger temperaturen ikke længere med højden.

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