Автор: cuatro.step one EHS during the 1951–1980
The only EHS covering at least three stations during the first half of the 60-year study period occurred in 1972. Observed at 16 stations, it covered vast areas of western Russia and some adjacent areas to the north (Fig. 1). Indeed, this exceptionally hot summer was spatially the second largest during the study period and in the northern half of the area examined it was the hottest (Table 4). During all three summer months, the average temperature was above the long-term average, but August was the hottest. In the central part of the area, this was the hottest August of the entire period. The temperature difference between the long-term average and the temperature of the particular season ranged from 2.3 to 2.7 °C in the far north, to 3.6–3.9 °C in the far south, to 4.5 °C at Tambov (t ? t av + 3?). Days with a temperature higher than 30 °C were recorded even in the north, where they were very rare in other years, while in the south there were 50 such days (two to three times more than the average). In the south, there were also days with a maximum temperature greater than 35 °C. Throughout the area there were cases of hot nights, i.e., 24-h days with a minimum temperature higher than 20 °C, including for example six such days in Arhangel’sk (compared to 0.4 on average) and 17 in Voronez (normally 2.6).
These uncommon thermal defects from inside the west Russia was for the reason that an effective quasi-fixed anticyclonic circulation (Bardin 2007). Current look (Zveryaev mais aussi al. 2012) signifies that the summer months regarding 1972 was characterised of the confident stage of your own North Atlantic Oscillation.
4.dos EHS during the 1981–1990
Brand new outstanding june of the year secured new main and you may east components of Eu Russia (Fig. 2). The fresh EHS try seen from the seven station, for instance the easternmost Ivdel’ (where it was really the only such june inside several months) and you can Ekaterinburg. Within the Kirov and you may Perm, it was the greatest summer of your own period. The typical SingleSlavic reviews air heat along side area are higher than new long-identity mediocre of the dos.5–step three.step 3 °C. The temperature try more than the fresh a lot of time-title average in most about three summer time, but August try truly the only incredibly hot few days and simply at the half of all station (including the best of one’s entire months inside Ivdel’, Ekaterinburg and you will Perm), if you find yourself Summer and you can July did not meet up with the requirement. There is certainly a considerable number of days that have a maximum heat higher than 31 °C, particularly in new southern area (20–twenty-five, on average 9–11). Merely regarding southwest a portion of the urban area, there had been weeks that have lowest temperature exceeding 20 °C (Dining table 5).
The summertime of 1988 are incredibly sizzling hot and you will, as with 1981, air temperature anomalies safeguarded main and you can east elements of European Russia, while the area affected is actually less associated with merely four stations (Fig. 2). When you look at the around three northern stations, this is the hottest, as well as in the outcome regarding Kotlas, and the just EHS regarding investigation period. The essential difference between the typical long-name in addition to EHS average temperature ranged from 2.3 to three.step one °C along the urban area. July turned-out like scorching (from the particular channels the greatest of the months). Just inside the Ekaterinburg did the new heat avoid in short supply of meeting the new criteria in any of days. There have been more ten days that have an optimum temperatures a lot more than 31 °C at all brand new stations, and also in the newest southern area, the quantity is almost 20 (compared to between about three and you will half dozen typically). Just isolated instances of weeks with the absolute minimum temperatures significantly more than 20 °C had been filed on the southern of area affected (Desk 5).
