Tmax/Tmin |
Soil temperature envelopes |
maximum and minimum soil
temperature profiles over the year |
MAGTp |
Mean Annual Ground Temperature at the top of permafrost |
mean
annual ground temperature, taken at the top of the
permafrost |
ALT |
Active layer thickness |
maximum depth of the
0°C isotherm over the year, taken from the Tmax
envelope (i.e. thaw only) |
DZAA |
Depth of the Zero-Annual Amplitude |
where the two envelopes
(Tmax and Tmin) meet within a margin of tolerance - 0.1
°C for the current analysis |
BP |
depth to the Base of Permafrost |
where the temperature profiles
intersect with the 0°C isotherm. |
- |
Thermal offset |
the difference between the mean annual temperature
at the ground surface and MAGTp |
- |
Surface offset |
the difference
between the mean annual temperature at the ground surface and the mean
annual air temperature (MAAT) |
ALT-DOY |
Date of the maximum thaw |
calculated from the evolution of
daily temperature profile of each year |