Glaciology

Natural-color image of Imja Tsho and surrounding glaciers. Source: Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite, October 4, 2010.

Melting Glaciers and Larger Lakes

Caitlin Dempsey

A global survey that used satellite data has determined that overall, glacial lakes have increased in volume almost 50% since 1990.

A photograph showing a snow algae bloom dominated by green algae starting to melt out from beneath seasonal snow cover. Photo: Gray et al., 2020. CC BY 4.0.

Why Is Antarctica’s Snow Turning Green?

Katarina Samurović

The coasts of the northern Antarctic Peninsula are seasonally turning green, orange, and red - all thanks to microscopic algae.

Map showing mass ice loss from Antarctica (2003 to 2019). Source: Smith et al., 2020.

Coastal Ice Loss is Outpacing Mainland Ice Gains on Both Antarctica and Greenland

Katarina Samurović

A recent study has confirmed that the coastal ice loss is much greater than the mainland ice gain on both Antarctica and Greenland.

Drift ice in the Sea of Okhotsk. Image: Landsat 8, NASA.

Lowest Latitude Sea Ice South of the Arctic

Caitlin Dempsey

One of the lowest latitudes in the Northern Hemisphere where sea ice forms in the Northern Hemisphere is the Sea of Okhotsk.

Exposed rock ridges are thick Pleistocene lava flows that were confined between large glaciers. Glacier Peak, Washington, view north. Photo: Heather Bleick, USGS Public domain.

Glaciers

Elizabeth Borneman

Learn about glaciers including the types of glaciers and how glaciers move.