GeoLog

sea ice

Imaggeo on Mondays: Polar backbone (Arctic Ocean)

May 15, 2017
Imaggeo on Mondays: Polar backbone (Arctic Ocean)
Polar backbone (Arctic Ocean) . Credit: Grace Shephard (distributed via imaggeo.egu.eu).

This image was taken during the Arctic Ocean 2016(AO16) expedition that ventured to the central regions of the Arctic Ocean, including the North Pole. It shows a pressure ridge, or ice ridge, as viewed from onboard the deck of the icebreaker Oden. It was quite striking that the ice ridge resembled an image of a spine – sea ice being a defining characteristic of the broader Arctic environment and b ...[Read More]

Geosciences Column: The complex links between shrinking sea ice and cloud cover

December 2, 2016
Sea ice breaking on the Chukchi Sea, Barrow, July 2014
Sea Ice . Credit: Scott Davidson (distributed via imaggeo.egu.eu)

The global climate system is complex. It is composed of, and governed by, a plethora of interconnect factors. Solar radiation, land surface, ice cover, the atmosphere and living things, as well as wind and ocean currents, play a crucial role in the climate system. These factors are intricately connected; changes to some can have significant effects on others, leading to overall consequences for th ...[Read More]

Geosciences column: Playing back the Antarctic ice records

September 27, 2013

Satellites are keeping tabs on the state of Arctic and Antarctic sea ice, and have observed considerable declines in ice extent in many areas since records began, but what do we know of past sea ice extent? Ice cores keep an excellent record of climate change, but until recently, ice cores have not been used to quantify patterns in past sea ice extent because few reliable compounds are preserved i ...[Read More]