| Term: | Seasonal thawing index |
| Definition: |
The cumulative number of degree-days above 0 degrees Celsius, calculated as the arithmetic sum of all the positive and negative mean daily air temperatures (degrees Celsius) for a specific station during the time period between the lowest point in the spring and the highest point the next fall on the cumulative degree-day time curve. NSIDCCryosphere
The cumulative number of degree-days above 0˚C, calculated as the arithmetic sum of all the positive and negative mean daily air temperatures (˚C) for a specific station during the time period between the lowest point in the spring and the highest point the next fall on the cumulative degree-day time curve IPAPermafrost GCW |