THE MAIN WEATHER AND CLIMATE FEATURES OF THE NORTHERN HEMISPHERE IN JANUARY 2018
Air Temperature.
Surprising temperature swing was observed in the Russian Federation in the last January. In the first decade almost entire country territory, except the south of Siberia and Kamchatka was in the conditions of the abnormally warm weather. In the European territory (ETR) and in the north Urals the average decade temperature norms were exceeded by 6-13°. In the north-west and centre of ETR the new temperature maximums were registered.
The abnormal temperature background was kept here in the second decade, although it became weaker (decade anomalies - +4…9°). In Polar area the warmth records were achieved. But at the same time the cold air captured entire territory of the country from Urals to the Pacific ocean, as well as in Volga area and North Caucasus. In Yakutia the frosts reached -60°, in Siberia they impended closely to -50°, in Volga area - -30°. But, in some areas in the south of Siberia (Kemerovo region, Altai district) in the middle of the summer it was warmer than 0°.
THE MAIN WEATHER AND CLIMATE FEATURES OF THE NORTHERN HEMISPHERE IN DECEMBER 2017
Air Temperature.
During all month the abnormally warm weather dominated in the European territory of Russia (ETR). At the end of the month the warmth was increased. In the first decade the average decade temperature anomalies reached +2…+3°, in the second and third one - +6…+8. The area of the large anomalies gradually enlarged. Record temperature maximums were registered in the Central region and Chernozem area, in the North Caucasus and Crimea, in Volga area and Pre-Urals. Temperature background corresponded to the beginning of spring, not to the winter month. Average monthly air temperatures exceeded the norms by 2-6° and more. In all federal districts, they came to the first ten of the highest values on the record, i.e. since 1891. In the South and Ural districts, it was the warmest December on the record, in the Central one – third, in the North Caucasian – fifth. In the north of ETR in the Kola Peninsula, although it was also warmer than usual, the temperatures were lower than -30°.
In the central and north areas of Siberia the warm weather, as well as in ETR, was kept for all month. The average decade temperature anomalies exceeded +10°. New daily maximums were registered. But the south of Siberia has got a frost in the middle of the month. In Altai republic the frosts reached -35°.