In the past 15 years, climate change has transformed the Arctic
The pace of change has surprised researchers who launched the annual report card in 2006
![remote sensing instruments in the Arctic](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/12/120820_cc_arctic-report_feat.jpg?fit=1030%2C580&ssl=1)
With remote sensing instruments similar to those used in satellites, MOSAiC gives up-close measurements of the thickness and composition of Arctic snow and ice. In late 2019, the mission embedded a boat in an ice floe for an unprecedented yearlong expedition.
Steffen Graupner/Alfred-Wegener-Institut (CC-BY 4.0)