New rifts have developed on the Wilkins Ice Shelf that could lead to the opening of the ice bridge that has been preventing the ice shelf from disintegrating and breaking away from the Antarctic Peninsula. Full Story, including animations The ice bridge connects the Wilkins Ice Shelf to two islands, Charcot and Latady. As seen in the Envisat image above acquired on 26 November 2008, new rifts (denoted by colourful lines and dates of the events) have formed to the east of Latady Island and appear to be moving in a northerly direction. Dr Angelika Humbert from the Institute of Geophysics, Münster University, and Dr Matthias Braun from the Center for...

New rifts have developed on the Wilkins Ice Shelf that could lead to the opening of the ice bridge that has been preventing the ice shelf from disintegrating and breaking away from the Antarctic Peninsula. The ice bridge connects the Wilkins Ice Shelf to two islands, Charcot and Latady. As seen in the Envisat image above acquired on 26 November 2008, new rifts (denoted by colourful lines and dates of the events) have formed to the east of Latady Island and appear to be moving in a northerly direction. Dr Angelika Humbert from the Institute of Geophysics, Münster University, and Dr Matthias Braun from the Center for Remote Sensing, University of Bonn, spotted the newly formed rifts during their daily monitoring activities of the ice sheet via Envisat Advanced...

A perspective for a network of ecological and physiological research Bremerhaven, October 28th 2008.  Changes to marine ecosystems caused by climatic conditions show how closely physiological and ecological processes are intertwined. This is described by Prof. Dr. Hans-Otto Pörtner, physiological ecologist at the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association, in the current issue of the periodical Science. Results of physiological and ecological research have shown in recent years that the temperature-dependent performance window of a species is crucial for its sensitivity to global warming. It determines its ability to grow, breed, forage and to compete for space or resources against other species under different temper...

The Arctic has always been a difficult place to do any extensive monitoring and data collection. Until recently, there have only been a limited number of projects that have taken any significant, long-term, and coordinated observations of the Arctic Ocean and adjacent bodies of water. This is due in part to the extensive sea ice cover that persists over Arctic waters for a good part of the year, which makes it difficult to conduct ship surveys or deploy weather buoys and moorings to measure deep water currents. Arctic ROOS (Regional Ocean...

Bremerhaven, October 17th 2008. The German research vessel Polarstern has returned today to Bremerhaven from the Arctic Sea. It has cruised as the first research vessel ever both the Northeast and the Northwest Passages and thereby circled the North Pole. The third part of the research vessel’s 23rd Arctic expedition, operated by the Alfred Wegener Institute in the Helmholtz Association, started its journey on August 12th in Reykjavik and ended it on October 17th in Bremerhaven. The ship travelled a distance of 10.800 nautical miles, equivalent to 20.000 kilometres. On board were 47 researchers from 12 nations, for example from Belgium, Germany, France, Japan, Canada, Korea, the Netherlands, Russia and the USA. Because of the small ice cover, the expedition members were a...

The Alfred Wegener Institute, the University of Bremen and Jacobs University inaugurate joint post graduate programme for earth and climate sciences Bremerhaven, October 1st, 2008. The joint graduate programme Earth System Science Research School (ESSReS) will be inaugurated today in Bremerhaven. The interdisciplinary graduate programme will train 24 PhD-students of geo- and climate sciences during the next three years. Apart from the doctorate, far-reaching skills in geo-, bio- and climate sciences will be confirmed for the PhD-students. The research training group is a joint project of the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association, the University of Bremen and Jacobs University Bremen. It is sponsored by the Helmholtz Associa...

CRAC-ICE will be a coordinated investigation into calving processes on three major Antarctic ice shelves, and a (long-term) monitoring of icebergs in the Southern Ocean, including the study of the physical processes related to iceberg drift and decay.

Bremerhaven, September 19th 2008. The Arctic summer nears its end and the minimum extent of sea ice is reached. The Arctic ice cover amounted to 4.5 million square kilometres on September 12th. This is slightly more than the lowest ice cover ever measured:  4.1 million square kilometres in the year 2007. Scientists are anxious about the development of sea ice because the long-time mean is 2.2 million square kilometres higher. This development did not come about completely unexpectedly, however. A model calculation conducted at the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association in early summer showed that the ice minimum of the year 2008 would lie below that of the year 2005 with almost one hundred per cent probability. A new minimum bel...

Permafrost research makes you happy Photo: Dominik Langhamer Thanks to Hanne H. Christiansen from UNIS for the text of this clog, sent from the field. To follow their adventures or get more details about the course have a look at www.tspnorway.com ! In just one long day 10 m of mainly frozen sediment cores were collected from 4 different parts of the landscape here in NE Greenland using hand held drilling machines. Thermistor strings were installed down to 3.2 m below the terrain surface in the deepest hole. This was done by the Interna...

Researchers of the Alfred Wegener Institute on Spitsbergen investigate the reaction of seaweeds to increased ultraviolet radiation Bremerhaven, August 21st 2008. It is red, it burns and itches: a sunburn on our skin. However, too much sun is not only bad for humans. Many plants react sensitively to an increased dose of ultraviolet radiation, too. Yet they are dependent on sunlight. With the help of pigments absorbing solar energy and light, plants produce their vitally important building blocks by means of photosynthesis. However, this has its limits: too much sun means an over-abundance of energy and thus the destruction of the sensitive pigments. The result are black spots, pale leaves and rotten parts. Since algae cannot apply sun lotion like we do, they de...