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Interannual Variability of the January Meridional Heat Transport by Planetary Waves in the Northern Latitudes,

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Evidence of large temporal and spatial variability in the eddy fluxes of sensible heat in the lower troposphere 100-50 kPa thickness layer in January, from 1946 to 1988, is presented. The spatial distribution of the standing eddy heat flux is dominated by three main features, or centers of action 1 a region north of Korea extreme eastern Siberia, 2 northeastern Atlantic Ocean, and 3 the Gulf of Alaska. Even though the center just north of Korea is the most active heat transport area, most of the interannual variability of the January standing eddy heat flux is associated with the heat transport centers over the northeastern Atlantic and the Gulf of Alaska, correlated with the positions of the Icelandic Low and the Aleutian Low, respectively. This year-to-year variability in these two geographical locations is due to interannual variability in the planetary waves van Loon and Williams, 1980, and a significant role of the air-sea interaction in this respect cannot be ruled out.

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This article is from 'Proceedings of the International Conference on the Role of the Polar Regions in Global Change Held in Fairbanks, Alaska on 11-15 June 1990. Volume 1', AD-A253 027, p164-169.



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