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Posts tagged Arctic

Climate Change in the Arctic Region

70.4N 24.1E

May 23rd, 2013 Category: Climate Change

Sweden, Norway, Finland – May 23rd, 2013

The Arctic Climate Impact Assessment hass determined that climate change in the world’s Arctic areas is proceeding at a rate that is nearly double the rate of change at a global scale, affecting countries such as Sweden, Norway and Finland. Climate change will increase sea surface temperatures and reduce the extent and thickness of sea ice in Arctic regions. These changes are expected to affect the movement, growth, habitat and reproduction of key commercial fish species. The agricultural sector is also at risk (click here for more information).

Kármán Vortex Streets in the Arctic

April 8th, 2009 Category: Clouds

Kármán vortex streets - April 5th, 2009

Kármán vortex streets - April 5th, 2009

Close-up

Close-up

A Kármán vortex street is a term used in fluid dynamics for a repeating pattern of swirling vortices caused by the unsteady separation of flow of a fluid over bluff bodies.

Here, a paisley-like line of such vortices cuts through many other rows of cloud streets, cumulus or cumulus-type clouds aligned parallel to the low-level wind.

Kármán vortex streets are named after the engineer and fluid dynamicist, Theodore von Kármán and is responsible for such phenomena as the “singing” of suspended telephone or power lines and the vibration of a car antenna at certain speeds.

Hornstrandir Peninsula and Drangajökull Glacier, Iceland

January 4th, 2009 Category: Snapshots

Northern Iceland - November 27th, 2008

Northern Iceland - November 27th, 2008

The coastline of Iceland’s Hornstrandir Peninsula, in the North, can be seen in this radar image. As we can observe, despite its proximity to the Arctic, the island’s coasts remain ice-free through the winter.

This is because the climate of Iceland’s coast is subpolar oceanic. The warm North Atlantic Current ensures generally higher annual temperatures than in most places of similar latitude in the world. The winters are mild and windy while the summers are damp and cool.

On the left side of the image, the eastern part of the Drangajökull glacier, which reaches west into the Kaldalon Bay, is visible. It is the northernmost glacier of Iceland. The glacier covers an area of 160-200 km2 at an altitude of 925m.

source Wikipedia