Fig. 3: Scenario 2 simulating the degradation of permafrost during the transient warming associated with a 200 yr-long interstadial (left) and the thermal regime of the subsurface following the end of this warming (right).
From: Increased autumn and winter precipitation during the Last Glacial Maximum in the European Alps

The mean annual air temperature at the ground surface is increased from −4 °C to 2 °C (left) and then reversed after 200 yr (right). The curves depict the mean annual temperature. The rectangles with the orange shading mark the −1 to 0 °C window of the possible formation of cryogenic cave carbonates for the depth range of the Obir caves.