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Earth has seen many climatic changes. There has been both warm and colds periods. The climatic change that we are witnessing today differs from earlier climatic shifts in one important aspect – greenhouse gases produced by man are the most important cause for the global warming taking place.
Studies of how the glaciers have increased and decreased their size through time make it possible for glaciologists to reconstruct the climate in the past. They use different methods like the study of sediments from the melting of the glaciers. Glacial silt settles in the lakes in front of the glaciers. The amount and character of sedimentation is dependent on the degree of melting. The glaciologist collect cores of sediments, and through the study of these, they can reconstruct climatic variation many thousand years ago.
The results show that all glaciers in Norway have been gone at one time since the last ice age. The warmest period was ca. 7500 years ago. The last cold period was “The Little Ice Age” which lasted for around to hundred years until AD 1750.
Climate researchers are now cooperating with archaeologists in the Klimapark project to piece together the development of climate in the Klimapark area.
Sist oppdatert: 08.06.2010
Publisert: 08.06.2010