Christopher Crawford, Author at Eos

A black and white satellite image shows sea ice, with cracks appearing bright white, beside snow-covered landfast ice (gray) and land (dark).

Science Updates

Monitoring Polar Ice Change in the Twilight Zone

by Ted Scambos, Christopher Shuman, Mark Fahnestock, Tasha Snow and Christopher Crawford 20 February 202426 February 2026

Landsat’s new extended data collection program is mapping Arctic and Antarctic regions year-round, even in polar twilight.