The main weather and climate features of the northern hemisphere in June 2017
Air Temperature.
An abnormally cold weather was in the European territory of Russia (ETR) from Barents sea to Low Volga area for the second month in a row. The end of the spring and beginning of the summer has become the coldest here since 1994, and last June is the second coldest in XXI century. The first coldest June was in 2003. The average monthly air temperatures in June 2017 in ETR are below the norm by 2-3°. Even in the end of the month in some areas of Central Federal District the day temperature decreased to +1…+3°, there were the night frosts. Heavier frosts were in the north of ETR in republic of Karelia, Murmansk and Arkhangelsk districts (to -5°). In some points new temperature minimum records have been set.
The opposite situation had place in Siberia, in the east of Urals and west of Yakutia. Here was the heat in June. The most time of the month the temperature was in diapason of +25…+35°, in some days it reached +40°. Such high temperatures became the record in a lot of areas of Krasnoyarsk, Altai and Transbaikalia districts, republics of Altai, Buryat, Kemerovo and Irkutsk areas. In Siberia Federal District the last June became the second hottest on the record in this area, the first hottest one was June of 2012. The average monthly air temperatures in this region exceeded the norm by 2-5°.
In Far East of Russia in some days it was also record heat (republic of Yakutia, Magadan district), however, the average monthly air temperature was close to the norm.
The main weather and climate features of the northern hemisphere in May 2017
Air Temperature.
The last May of the European territory of Russia (ETR) will come to mind for the population for a long time as a cold and rainy. The often intrusions of the Arctic cold caused the record colds and even frosts during all month. The average monthly air temperature was below the norm in all federal districts. In Central Russia – approximately by 2°, in the Russian North – up to 4°. Almost daily somewhere the new minimum temperature records were registered. The negative temperature anomalies in May, similar to the present ones, were observed here the last time in 2008, and in general every decade in the Russian Plain was marked with at least one such cold May. Sometimes it has happened even more frequently. For instance, during the 90th of the last century it has happened triple times over the decade (in 1990, 1994 and 1999).
In Siberia and most part of Far East the warmth and cold swapped each other. Instead of the heat of 25-30° (Republic Tuva, Transbaikalia, Irkutsk district) frosts
of -10° and colder came (south of West Siberia, Republic Tuva, Altai, south of Krasnoyarsk district). As a result, the average monthly air temperature in the most part of these areas was close to the norm, with small negative anomalies in Yakutia and with positive ones in the other territory. And only in Kemerovo region, in Altai and Tuva Republics and Chukchi Autonomous District and Jewish Autonomous Region the temperature norms were noticeably exceeded (by 2° and more).
The hot weather dominated in the east of Asia. In Beijing the air temperature reached +37°. In the north of the country, in Japan and Korean peninsula the average monthly air temperatures exceeded the norm by 2-3°, in Mongolia – by 3-5°. In China the last May is the third warmest one on the record after 2007 and 2012.