CURRENT STATUS OF THE TEMPERATURE AND HUMIDITY REGIME OF THE TROPOSPHERE IN THE SIBERIAN SECTOR IN DIFFERENT CIRCULATION PERIODS
Abstract and keywords
Abstract (English):
The paper studies the long-term dynamics of air temperature and relative humidity anomaly indices in the surface layer and at different levels of the troposphere in Siberia and neighboring regions (European and Far Eastern sectors). As the main cause of the observed variations in climatic parameters we considered circulation factors, which were taken into account using the typification of macrocirculation processes proposed by B.L. Dzerdzeevsky. Seasonal differences were revealed in the distribution of anomaly indices and the area occupied by anomalies of different signs of annual and monthly mean temperature and relative air humidity, which are most pronounced during circulation periods of increased duration of meridional northern processes in the Siberian sector and in the Northern Hemisphere as a whole. The highest rates of change in the temperature regime in the Siberian sector over recent decades have been observed at the level of the isobaric surface AT–700 hPa (3 km), which affects the advective-dynamic factors of surface cyclo- and frontogenesis, as well as the processes of cloud formation and precipitation. In general, an increase in the heat content of the lower and middle troposphere and a decrease in the relative moisture content near the tropopause can be accompanied by an increase in the amount of the potential energy and convective instability energy reserves and can lead to an increase in climate risks in the Siberian sector.

Keywords:
temperature, relative humidity, climate, circulation epoch, typification, anomalies
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References

1. Bagrov N.A., Myakisheva N.N. Some characteristics of anomalies of average monthly air temperatures. Trudy MMTs [Proceedings of the World Meteorological Center]. 1966, iss. 9, pp. 53-63. (In Russian).

2. Doklad ob osobennostyakh klimata na territorii Rossiiskoi Federatsii za 2020 god [A Report on Climate Features on the Territory of the Russian Federation in 2020]. Moscow, Roshydromet Publ., 2021, 104 p. (In Russian).

3. Dzerdzeevsky B.L., Monin A.S. Typical schemes of the general circulation of the atmosphere in the Northern Hemisphere and the circulation index. Izvestiya Akademii nauk SSSR. Seriya Geofizicheskaya [Bulletin of the Academy of Sciences of the USSR. Geophys. Ser]. 1954, vol. 6, pp. 562-574. (In Russian).

4. Garmaev E.Zh., Pyankov S.V., Shikhov A.N., Ayurzhanaev A.A., Sodnomov B.V., Abdullin R.K., et al. Mapping of modern climate changes in the Selenga river basin. Russian Meteorology and Hydrology. 2022, vol. 47, pp. 113-122. DOI:https://doi.org/10.3103/S1068373922020054.

5. Gruza G.V., Rankova E.Ya. Nablyudaemye i ozhidaemye izmeneniya klimata Rossii: temperatura vozdukha [Observed and Expected Climate Changes over Russia: Surface Air Temperature]. Obninsk, FGBU “VNIIGMI-MTsD” Publ., 2012, 194 p. (In Russian).

6. Karimov K.A., Gainutdinova R.D., Zhunushova G.Sh., Krymskaya D.N. Regional features and causes of climate change in Kyrgyzstan. Izvestiya Natsional’noi Akademii nauk Kyrgyzskoi Respubliki [Proceedings of the National Academy of Sciences of the Kyrgyz Republic]. 2020, vol. 1, pp. 22-26. (In Russian).

7. Kotlyakov V.M. Ice is life itself. Nauka i zhizn’ [Science and Life]. 2019, vol. 7, p. 106. (In Russian).

8. Krymskaya D.N., Karimov K.A., Gainutdinova R.D. Changes in the temperature of the surface atmosphere under the influence of processes in the ocean. Trudy XXIII Mezhdunarodnogo simpoziuma “Optika atmosfery i oceana. Fizika atmosfery” [Proceedings of XXIII Int. Symp. “Optics of the Atmosphere and the Ocean. Physics of the Atmosphere”]. Tomsk, IOA SB RAS Publ., 2017, pp. D485-D488. (In Russian).

9. Kuznetsova V.N., Shvets N.V. Features of variability of relative air humidity on the territory of Russia over the past decades. Trudy VNIIGMI-MTsD [Proceedings of the All-Russian Scientific Research Institute of Hydrometeorological Informatio - World Data Center]. 2020, vol. 187, pp. 19-33. (In Russian).

10. Loginov V.F. Modern climate changes in Belarus. Fundamental’naya i prikladnaya klimatologiya [Fundamental and Applied Climatology]. 2022, vol. 8, no. 1, pp. 51-74. DOI:https://doi.org/10.21513/2410-8758-2022-1-51-74. (In Russian).

11. Lorenz E.N. The observed circulation. The nature and theory of the general circulation of the atmosphere. World Meteorological Organization, 1967, pp. 25-45.

12. Mokhov I.I. Climate change: Causes, risks, consequences, problems of adaptation and regulation. Herald of the Russian Academy of Sciences. 2022, vol. 92, no. 1, pp. 3-11. DOI:https://doi.org/10.1134/S101933162201004X.

13. Mokhov I.I., Smirnov D.A. Empirical estimates of the contribution of greenhouse gases and natural climatic variability to surface temperature trends for different latitudes. Doklady Earth Sci. 2022, vol. 503, no.1, pp. 114-118. DOI: 10.1134/ S1028334X22030084.

14. Popova V.V., Matskovsky V.V., Mikhailov A.Yu. Recent climate change over the terrestrial part of extratropical Northern Hemisphere zone. Vestnik Moskovskogo universiteta. Seriya 5. Geografiya. [Bulletin of Moscow University. Series 5. Geography]. 2018a, no.1, pp. 3-13. (In Russian).

15. Popova V.V., Shiryaeva A.V., Morozova P.A. Changes in the snow depth characteristics in the territory of Russia in 1950-2013: Regional features and connection with global warming. Kriosfera Zemli [Earth’s Cryosphere]. 2018b, vol. 4, pp. 65-75. (In Russian).

16. Sazonov B.I. Surovye zimy i zasukhi [Harsh winters and droughts]. Leningrad, Gidrometeoizdat, 1991, 240 p. (In Russian).

17. Trenberth K.E., Fasullo J.T. An apparent hiatus in global warming? Earth’s Future. 2013, vol. 1, pp. 19-32. DOI: 10.1002/ 2013EF00016.

18. Zhang X., Sorteberg A., Zhang J., Gerdes R., Comiso J.C. Recent radical shifts of atmospheric circulations and rapid changes in the Arctic climate system. Geophys. Res. Lett. 2008, vol. 35, iss. 22, L22701. DOI:https://doi.org/10.1029/2008GL035607.

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