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September 2016 The Frozen Ocean – A Photographic Diary of a Winter Expedition into the Antarctic Sea Ice
The public are invited to a fascinating public lecture of a winter expedition with the German icebreaker “Polarstern” to Antarctica. The talk will be delivered by Professor Peter Lemke of the Alfred Wegener Institute (AWI), Helmholtz-Centre for Polar and Marine Research, Germany on Wednesday, 14 September, at 7.30pm in the Colm O’hEocha Theatre in the Arts Millenium Building at NUI Galway.
Professor Lemke has participated in nine polar expeditions with the German research icebreaker “Polarstern”, and has collections of stunning photographs depicting the Antarctic landscape and intriguing experiences to share. He is visiting Galway to participate in the Atlantic Ocean Climate Scholars Programme which is a week-long intensive, accredited workshop examining how climate and oceans interact, with particular examples from the Atlantic Ocean and higher latitudes. The lecture is open to members of the public and is part of a workshop organised by Dr Pauhla McGrane of the Strategic Marine Alliance for Research and Training (SMART) being held in Galway, from 12-19 September,offered to international postgraduate students of marine, atmosphere and climate-related sciences.
“Polar regions play an important role for our climate, but direct observations are difficult to obtain and can only be achieved with greatest effort. This is especially true in wintertime” said Professor Lemke. “Severe blizzards, being trapped between thick ice floes and forced to drift with the ice, the darkness of the polar night and temperatures around minus 30°C. This presentation will take you along on an extraordinary winter expedition into the Antarctic Ocean. It shows the beauty of the frozen ocean, presents some insight into polar and climate research, and demonstrates everyday life on a research icebreaker,” he continued.
High latitudes have received attention recently because of significant changes in the atmosphere, sea ice, and ocean, and on land, especially in the Arctic. The surface air temperature in the Arctic has increased about twice as fast as the global air temperature. The Arctic sea-ice extent in summer has decreased by 35% since 1979, and the sea-ice thickness during late summer has declined in the Central Arctic by about 40% since 1958. A warming has also been observed at depth in the Arctic Ocean and the Southern Ocean. But surprisingly there is no negative trend observed in the Antarctic sea ice. Both, the Greenland and Antarctic ice sheets are losing mass, and the sea level is rising.
Most of these observed trends are in agreement with warming scenarios performed with coupled climate models, which indicate an amplified response in high latitudes to increased greenhouse gas concentrations. But details of the complex interaction between atmosphere, sea ice and ocean, and the impacts on the ecosystem and the human society are still only marginally understood. Results will be shown from the latest Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) and from a winter expedition the speaker has lead into the ice-covered Weddell Sea (Antarctica).
Dr Pauhla McGrane, coordinator of SMART said: “We are delighted that Proffessor Lemke has agreed to provide his unique insight into carrying out climate research in hostile polar environments, particulaly when accompanied by such beautiful stark images. This is especially relevant as this year we will run the second North South Atlantic Training Transect on-board the RV Polarstern from Germany to South Africa which will train 24 postgraduate students, including seven Irish students, in researching climate, ocean and atmospheric interactions at sea. These innovative offshore international collaboarations, developed with AWI, the Partnership for Observation of the Global Oceans (POGO) and funded by the Nippon foundation are essential in developing excellent climate and ocean scientists to measure and understand our changing planet”.
Professor Lemke continues to work on the observation of climate processes in atmosphere, sea ice and ocean and their simulation in numerical models for the polar components of the climate system. On six expeditions on Polarstern he acted as chief scientist. For more than 30 years he served on many national and international committees on polar and climate research. He was the Coordinating Lead Author for Chapter 4 (Observations: Changes in Snow, Ice and Frozen Ground) of the IPCC Fourth Assessment Report published in 2007. The IPCC was awarded the Nobel Peace Prize together with Al Gore in 2007. For the Fifth Assessment Report of the IPCC published in 2013 Proffessor Lemke worked as Review Editor of Chapter 4 and as Lead Author of the Technical Summary.
All members of the public are welcome and refreshments will be served afterwards.
The Atlantic Ocean Climate Scholars Programme is a collaboaration between SMART, NUI Galway, AWI and the Partnership for Observation of the Global Oceans (POGO) that is funded by the Nippon foundation under NF POGO Regional Training fund.