Climate
Climate

The main weather and climate features of the northern hemisphere in Oktober 2017

Air Temperature.

The first decade of October in the most part of Russia became an abnormally cold. At the beginning of the month the colds to -5°came to the south areas of Central Federal District (Lipetsk, Tambov, Orel, Belgorod and Voronezh regions). The same situation took place in the Low Volga area and in Stavropol district. Heavier colds were observed in the South Urals, in Yakutia frosts reached -20°. In some places of Ural, Siberia and Far East Federal districts it was colder than usual by 2° and more over the decade at the average.

Everything was changed in the second decade. Now from the west border to Urals, and in the Arctic territory up to Chukotka the warmth dominated. The average decade air temperature anomalies in some places exceeded +4…+6°. In the north of Yakutia, Kolyma, Chukotka and Arctic islands the new record air temperature maximums were registered. Only south areas of the Far East, as before, remained in the cold.

In the third decade once again the cold weather returned to the European Territory of Russia (ETR). In the north-west the decade became colder the norm by 2-3°. At the same time, it was, as before, warm behind Urals, including the south of the Far East. Although the frosts in Evenki and Yakutia were strengthened up to -30°, the average decade air temperatures exceeded the norms by 4-7°. In the south of Siberia and Khabarovsk district the air temperature daily maximums were registered.

 

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The main weather and climate features of the northern hemisphere in September 2017

Air Temperature.

Abnormally cold weather, being dominated in August in Urals and West Siberia, became colder in the Autumn beginning. The territory, captured by colds, increased in the East Siberia and west areas of Yakutia, as well as in High and Middle Volga areas, east areas of Russian North and centre of Russia. It was news from these territories about frosts and new records of the air temperature minimums. In the third decade the temperature anomalies in the south of Urals and the West Siberia, as well as in the west of Yakutia reached -4…-5°. In Urals in XXI century only one September was colder than present one. It happened in 2014. In Siberia the cold September became the phenomena, which one can barely consider as the seldom event. In the recent decade the average monthly air temperature in September has been below the norm the third time. Such cold weather in the last September resulted in decreasing of the temperature below the norm in the area from Arkhangelsk region and the High Volga to Yakutia by 2° and more.
In the other part of European Territory of Russia (ETR) the temperature in the first decade wes close to the norm, but then the warmth began to increase, especially in the second part of the month in the south of ETR. In Crimea, Rostov and Volgograd regions, Krasnodar and Stavropol districts, in the North Caucasus the average daily air temperature many times reached the record values. In this area the average monthly air temperature anomalies exceeded +2…+3°.
In the most part of the Far East, particularly in the north areas, it was warmer than usual. The average monthly air temperature exceeded the norm by 2-3°. In Chukotka the records of maximum temperature have been registered, whereas in Sakhalin and in the south of the region temperature reached the record minimums in the beginning of the month.
In general, in Russia this September was close to the norm by temperature conditions, this is striking distinguishes it from September of the last year, which appeared to be the warmest in the country on the record, i.e. since 1891.

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The main weather and climate features of the northern hemisphere in August 2017

Air Temperature.


In August the European Territory of Russia kept an abnormally warm weather and sometimes hot one. From Russian North to Northern Caucasus the numerous records of the air temperature maximums have been registered. In South and North-Caucasian Federal Districts temperature repeatedly rose above +40°, in North-West District - +30°, in the last case it is rather seldom at the end of summer. Sometimes a cold Arctic air penetrated to the northern areas and then in Komi republic and Nenets Autonomous region the light frosts and temperature minimums were registered. The average decade air temperature anomalies in ETR exceeded +6°, in some places the average monthly air temperature are above the norm by 3-4°.
In the Urals and West Siberia the most part of the month it was cold weather with the average decade temperature anomalies -3°. In the south of West Siberia in Tyumen, Omsk, Tomsk, Novosibirsk, Kemerovo regions and Altai district the light frosts and new daily temperature minimums were registered.
Northern areas of Far East Federal district all month “bathed” in warmth. In Yakutia and Chukotka the air temperature maximums, as well as absolute ones on the record in August, have been registered. Average decade temperatures were exceeded by 4-5°, and average monthly air temperature became the third highest value on the record, it followed 2014 and 1991. August became warmer than July, it was happened only the third time, in XXI century – for the first time. In the south of Far East the abnormally warm weather of the first half of the month was changed by the fresh and even the cold one in the third decade of the month.

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The main weather and climate features of the northern hemisphere in July 2017

Air Temperature.

In the first decade of July European territory of Russia (ETR) kept the May-June colds. From north-west to Krasnodar district the new records of air temperature minimums were registered. The average decade temperatures became below the norm by 2-3°. Slowly but surely a warmth started to penetrate here only since the second decade. Initially the air in south of Russia in steppe areas of Northern Caucasus, in Low Volga and Black sea coast was heated up to 30-35°, and in some places it was more than 40°, in the end of decade the heat dominated in north areas of ETR, exceeded in Arkhangelsk region and Komi republic +30°. The resume of the second decade became the temperature norm in the most part of European territory, in the south and north it was exceeded by 2-3° and 2-6° respectively. At last, in the third decade all European territory of Russia, except Karelia, met the warmth. In the south it reached the record values, in some places exceeding 40°, and in the noticeable part of ETR the average decade temperatures exceeded the norms by 2-3° and more.

 

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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.

 

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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.

 

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