Shrubs have long been considered a key factor in permafrost thaw. They increase snowpack thermal insulation, thereby limiting winter cooling and accelerating thaw. However, a recent study on Bylot Island found that low shrubs can also cool the ground in winter. The researchers propose that this is due to frozen shrub branches that extend to or near the snowpack surface, acting as highly conducting thermal bridges that enhance permafrost cooling in winter.
Exploring the Surprising Role of Shrubs in Permafrost Thaw and Carbon Release
![](https://byte.eco/jomsoagh/2024/05/Thawing-Permafrost-Concept-Art-1536x1024.jpg)