| Term: | Mean annual ground-surface temperature (MAGST) |
| Definition: |
Mean annual temperature of the surface of the ground. NSIDCCryosphere
Mean annual temperature of the surface of the ground IPAPermafrost Mean annual temperature of the surface of the ground. Permafrost exists if the Mean Annual Ground-Surface Temperature is perennially below 0C. Although the mean annual surface temperature may be below 0C, the surface temperature will fluctuate during the year, causing a layer of ground immediately beneath the surface to thaw in the summer and freeze in the winter (the Active Layer). TrombottoGeocryology GCW |