MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHEN HEMISPHERE AS OF SEPTEMBER 2023
Air temperature
At the beginning of the month, the weather in the ETR somewhat improved after the colds in the third decade of August: the temperatures approached the normal values or even noticeably exceeded them in the north where new daily maxima were set in the Murmansk and Arkhangelsk Regions, in the Nenets Autonomous District and Novaya Zemlya. The heat in the second decade spread further south and finally occupied the entire north-west of the country as well as Central Russia in part. The record-breaking maxima were now recorded in Karelia and in the Leningrad, Pskov, Kaliningrad, Moscow, Vladimir, Kostroma and some other Regions. But what happened in the third decade had never been observed this time of year before. The entire ETR and the Urals received much more heat than usual (with +2-6° anomalies), leading to record-breaking temperature maxima in many locations from the Baltic to the Urals, higher than +25° in places, and the air temperatures at the end of September matched those observed on a good summer day.
But beyond the Urals, cold days were more frequent. In Yakutia and in the north of the far East, negative anomalies of the decade-averaged temperatures reached -2…-3° and the thermometer readings could drop to -5…-10°, yet the abnormal heat would break through even there on occasional days: for example, the unprecedented temperature maxima were recorded at the beginning of the month in Trans-Baikal. At the end of September, heat came to Siberia, Yakutia and the south of the Far East, and new records of heat were established in Primorye, on Sakhalin and the Kuril Islands.
MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHEN HEMISPHERE AS OF AUGUST 2023
Air temperature
In Russia, this August turned out to be the warmest in the history of regular meteorological observations since 1891. In the first half of the month, the weather in the ETR was hot, and the decade-averaged temperatures exceeded the normal values by 2-5 or more degrees. New daily temperature maxima, some of them in excess of +40°, were set both in the south of the ETR in the Rostov, Volgograd and Krasnodar Regions, in the Krasnodar Territory, the Crimea and the republics of the North Caucasus, and in the north or north-west in the Arkhangelsk, Pskov, Novgorod and Kaliningrad Regions as well as in the Republic of Komi, the Novaya Zemlya and the Volga region. The weather in the third decade became noticeably colder, even with the frosts in the north of Central Russia, but still remained very hot in the south, producing temperature maxima again and again.
The Asian region was occupied by the heat for most of the month: there, the record-breaking temperatures were logged in Siberia, Yakutia, Primorye, Sakhalin and Kolyma, and the thermometers often stuck to above 30-35°. In the outcome, this August was deemed the hottest in the meteorological chronicle of the ATR.