Россия
The article discusses the features of large-scale spatial and temporal variability of moistening(potential evapotranspiration, precipitation, potential evapotranspiration coefficient) in theEuropean Russia (ER) for 1966-2017. Much attention is paid to abnormal moisteningconditions (droughts and excessive moistening) resulting in significant ecological and economicaldamage. The All-Russia Research Institute of Hydrometeorological Information archive hasserved as a source of initial information. The most physically based modified method ofM. I. Budyko has been used to estimate the potential evapotranspiration. A series of originalmaps of components of moistening has been constructed, a number of maps for the ER beingconstructed for the first time. The presence of positive trends in the annual values of potentialevapotranspiration and precipitation has been established, the distribution of which beingpatchy. The highest trends have been noted in the southern European Russia, the distributionof positive trends in potential evapotranspiration being patchy as well, with minimumestimates of 3.7 mm per year in the Syktyvkar area. Due to the similar trend character inpotential evapotranspiration and precipitation there takes place the smoothening in potentialevapotranspiration coefficients resulting in their trends being statistically insignificant overmost of the ER. The interannual variation of components of moistening is characterized by thepresence of powerful anomalies in the form of extreme droughts and excessive moistening. Theirformation is due to the complete coincidence of significant positive potential evapotranspirationanomalies and negative precipitation anomalies in most of the ER, and vice versa. Unevennesshas been revealed in the spatial distribution of severe droughts and excessive moistening of theterritory: the most powerful droughts are concentrated mainly in the forest-steppe zone (withmaximum in the Krasnoslobodsk and Elatma regions). Excessive moistening is predominantlypatchy in nature, being practically absent in the northern regions of the ER. A decrease inpotential evapotranspiration has appeared to be the predominant factor in the formation ofexcessive moistening, a decrease in precipitation being the one in the formation of droughts.
Potential evapotranspiration, precipitation, moistening, European Russia, drought, trend
1. Bedritskii, A. I., A. A. Korshunov, M. Z. Shaimardanov (2009), The bases of data on hazardous hydrometeorological phenomena in Russia and results of statistical analysis, Russ. Meteorol. Hydrol., 34, 703-708
2. Budyko, M. I. (1971), Climate and Life, 470 pp. Gidrometeoizdat, Leningrad. (in Russian. English publication, D. H. Miller (ed.), 1974, 508 pp.)
3. Bulygina, O. N., V. N. Razuvaev, et al. (2020), The bases of data on hazardous hydrometeorological phenomena in Russia and results of statistical analysis, Description of data set of monthly precipitation totals from Russian stations, RIHMI-WDC, URL: http://meteo.ru/ english/climate/descrip7.htm
4. Cherenkova, Ye. A. (2013), Quantitative evaluation of atmospheric drouht in Federal District of the European Russia, Izvestiya RAN Seriya Geograficheskaya, 6, 76-85. (in Russian)
5. Cherenkova, E. A., N. A. Shumova (2007), Potential evapotranspiration in quantity indicators of climate, Arid Ecosystems, 13, No. 33-34, 55-67. (in Russian
6. Frolov, A. V., (ed.) (2014), Second Assessment Report of Roshydromet on Climate Changes and Their Consequences on the Territory of the Russian Federation, 1003 pp. Roshydromet, Moscow. (in Russian)
7. Gidrometeoizdat (1976), Recommendations for Calculate of Evaporation from Land Surface, 96 pp. Gidrometeoizdat, Leningrad. (in Russian)
8. Gordeeva, S. M., V. N. Malinin (2018), On predicting annual runoff of large rivers of european Russia based on decision trees method, Proceedings of the Russian State Hydrometeorological University, 50, 53-65. (in Russian)
9. IPCC (2013), IPCC Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, 1535 pp. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA
10. IPCC (2019), On predicting annual runoff of large rivers of european Russia based on decision trees method, Climate Change and Land an IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems, IPCC, https://www.ipcc.ch/srccl/
11. Malinin, V. N. (1994), The problem of Forecasting the Level of the Caspian Sea, 160 pp. RSHI Publ., Saint-Petersburg. (in Russian)
12. Malinin, V. N., S. M. Gordeeva, D. A. Gur’yanov (2014), Simple parametric humidification model of north-west Russia for the conditions of modern climate change, Proceedings of the Russian State Hydrometeorological University, 36, 35-49. (in Russian)
13. Malinin, V. N., S. M. Gordeeva (2019), Effect of Moisture Exchange in the Northern Atlantic on European Russia Moistening and Annual Volga Runoff, Water Resources, 46, No. 3, 466-479
14. Popova, V. V., E. D. Babina, A. G. Georgiadi (2019), Climatic Factors of the Volga Runoff Variability in the Second Half of 20th - Early 21st Centuries, Izvestiya RAN. Seriya Geograficheskaya, 4, 63-72, (in Russian
15. Rybanova, A. Yu., A. A. Fokicheva, et al. (2019), Economic value of information activities of the Hydrometeorological Service, Proceedings of the Russian State Hydrometeorological University, 56, 38-49, (in Russian
16. Schwer, Ts. A. (1976), Precipitation on the USSR Territory, 302 pp. Gidrometeoizdat, Leningrad. (in Russian)
17. Smirnov, N. P., V. N. Malinin (1988), The Atmosphere Water Balance as a Hydrological Problem, 189 pp. LSU Publ., Leningrad. (in Russian
18. United Nations (1994), Convention to Combat Desertification, 71 pp. Chatelaine, Geneve
19. Zolotokrylin, A. N., T. B. Titkova, E. A. Cherenkova (2014), Humidification of dryland of the europian Russia: the present and future, Arid Ecosystems, 20, No. 2, 5-12, (in Russian
20. Zubenok, L. I. (1976), Evaporation on the Continents, 264 pp. Gidrometeoizdat, Leningrad. (in Russian)
