Scientists Say: Aufeis
This is what forms when water hits seriously cold air
![](https://www.snexplores.org/wp-content/uploads/2019/11/860-header-aufeis.png)
This chunk of aufeis on the North Slope of Alaska was part of a huge wall that formed over the winter. By August, when this photo was taken, the largest chunk left was still about one meter (one yard) tall.
B. Brookshire/SSP