Thawing

The permafrost is thawing.

In Alaska, thawing of permafrost is responsible for severe damage to roads, buildings, and pipelines that will be costly to replace, especially in remote parts of Alaska.

Tom is thawing out some chicken wings.

Researchers have discovered that carbon-rich permafrost is thawing at increasingly high rates, likely as a result of human-induced climate change, making the Arctic an important potential source of methane emissions.

A new study says thawing permafrost, or soil that is usually frozen year-round, in the world's arctic regions is releasing greenhouse gases not accounted for in global estimates, making it more difficult to fight climate change.

According to a new study, the thawing Alaskan permafrost is releasing emissions of nitrous oxide at a rate about 12 times higher than thought. Along with being the third most significant greenhouse gas, nitrous oxide, once it combines with sunlight and oxygen in the stratosphere can convert to nitrogen oxides. This is something scientists say may harm the ozone layer.

"He died either while freezing or while thawing", stated Tom.

Hence, there is a succession of thawings and freezings. The former expand, and endeavour to restore the surface of the ground to its natural condition, while the latter contract and harden it.