INTERRELATION BETWEEN CLIMATE VARIATIONS IN THE ARCTIC AND AT MIDDLE AND LOW LATITUDES

G. V. Alekseev, E. I. Aleksandrov, P. N. Svyashchennikov, and N. E. Kharlanenkova

The temperature anomalies in the Arctic and at the extra-Arctic latitudes in winter are generally correlated negatively over the periods shorter than ten years and positively on longer periods. A spatial distribution of air temperature anomalies at the arctic and adjacent latitudes at significant deviations of mean air temperature from the norms is characterized in winter by two opposite-sign anomalies. More than that, it is obvious that the pressure difference between the centers of the Azores high and the Icelandic low (the North Atlantic Oscillation index) increases in winter warming and decreases in cooling. The reaction of the Arctic to the climatic characteristics at middle and low latitudes is connected first of all with the variations in the area of sea ice and in the freshwater content in the Arctic Ocean and with their outflow into the North Atlantic.

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