| Term: | Total annual thawing index |
| Definition: | The cumulative number of degree-days, calculated by adding all the positive mean daily air temperatures (degrees Celsius) for a specific station during a calendar year. |
| Term: | Total annual thawing index |
| Definition: | The cumulative number of degree-days, calculated by adding all the positive mean daily air temperatures (˚C) for a specific station during a calendar year |