Article Abstract:
The results of the Greenland ice core GISP2 showing that snow accumulated within one to three years from the Younger Dryas event to the subsequent Preboreal interval is reported. It is well-known that the warming at the end of the last glaciation was punctuated by shifts to glacial climate, of which the 50-year-long Younger Dryas event is the most well-known. The extreme rapidity of climate change indicated by the GISP2 data is remarkable because it suggests that events in the last glaciation may have been a response to a sudden trigger in the North Atlantic climate system.
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Article Abstract:
Global climate underwent frequent changes in the last 40,000 years as shown by ice core drillings from Greenland. The core samples were analyzed for electrical conductivity, which indicated the degree of acidity or dustiness, which indicated climate. The results showed that changes occurred in periods as small as ten or three years, while the overall climate made transitions between glacial and interglacial.
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Article Abstract:
Snow accumulation in central Greenland for over 18,000 years is dependent on atmospheric circulation. The atmospheric temperature has no influence on snow accumulation. A study was performed by comparing the snow accumulation rates and temperatures obtained from the oxygen isotope composition of deep core ice. The deep core ice was provided by the Greenland Ice Sheet Project II.
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