cuatro Place and you will thermal attributes of acutely scorching summer seasons (EHS)
19 March 2024 - 16:48 WIB
cuatro.1 EHS throughout 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 unusual thermal anomalies within the western Russia was basically considering good quasi-fixed anticyclonic stream (Bardin 2007). Recent search (Zveryaev mais aussi al. 2012) implies that summer time of 1972 are characterised by confident stage of your own Northern Atlantic Oscillation.
4.dos EHS throughout the 1981–1990
New exceptional june associated with 12 months shielded the fresh new central and you may eastern areas of Western european Russia (Fig. 2). This new EHS is actually observed from the 7 stations, for instance the easternmost Ivdel’ (where it had been the actual only real instance june during the period) and Ekaterinburg. From inside the Kirov and you can Perm, it was the greatest june of your own period. The average heavens temperatures along the town are more than this new long-identity mediocre by the dos.5–3.step three °C. The warmth is actually greater than new a lot of time-name average throughout about three summer time, however, August try really the only exceptionally hot week and only on half most of the stations (such as the hottest of one’s entire months into the Ivdel’, Ekaterinburg and Perm), if you are June and you can July didn’t meet up with the traditional. There is certainly a number of weeks with a max temperatures greater than 30 °C, especially in the latest south (20–twenty-five, on average 9–11). Merely regarding southwestern part of the urban area, there were weeks with minimal heat exceeding 20 °C (Dining table 5).
Summer time out-of 1988 are extremely sizzling hot and, such as 1981, sky temperature anomalies covered main and you will eastern elements of Western european Russia, even though the affected area is faster involving simply five channels (Fig. 2). In the three northern programs, this was the latest, as well as in the truth off Kotlas, in addition to the merely EHS on the study months. The essential difference between the average enough time-title in addition to EHS conditions varied of 2.step 3 to three.step 1 °C along side town. July turned-out such sizzling hot (at specific stations the hottest of your period). Simply when you look at the Ekaterinburg performed the brand new temperatures stop in short supply of conference the latest standards in every of the days. There have been over 10 months having a max temperature significantly more than 29 °C at all brand new programs, plus the fresh new southern area, the quantity try nearly 20 (than the between around three and half https://kissbrides.com/silversingles-review/ dozen normally). Only isolated instances of days having at least temperatures over 20 °C was in fact recorded throughout the southern area of affected area (Table 5).
