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«IZVESTIYA IRKUTSKOGO GOSUDARSTVENNOGO UNIVERSITETA». SERIYA «NAUKI O ZEMLE»
«THE BULLETIN OF IRKUTSK STATE UNIVERSITY». SERIES «EARTH SCIENCES»
ISSN 2073-3402 (Print)

List of issues > Series «Earth Sciences». 2024. Vol 47

Analysis of Climate Norms in the Trans-Baikal Territory

Author(s)
E. V. Noskova, I. L. Vakhnina
Abstract
Using observational data from 27 meteorological stations of the Roshydromet network, on average for the territory of the Trans-Baikal Territory and its geoadministrative regions, the values of climatic norms for four operational periods recommended by the WMO (1961–1990, 1971–2000, 1981–2010, 1991–2020) were calculated and analyzed. , and general (1961–2020) for surface air temperature and precipitation. Updated data on climate norms and their dynamics over different time intervals are of particular importance for ensuring the economic sustainability and environmental security of the Russian Federation in the context of current climate trends. The purpose of this study was to assess the regional features of changes in climatic norms of air temperature and precipitation in the territory of the Trans-Baikal Territory. The results of the study showed that the warming observed in the Trans-Baikal Territory led to an increase in the norms, the average annual values of which with each subsequent period are 0.3–0.4 °C higher than in the previous one. On average, over the region, the largest contribution to the increase in climatic norms of average annual air temperatures for the cold season was observed in 1971–2000, for the warm season in 1981–2010. An analysis of air temperature anomalies calculated as deviations from the average value for the base period 1991–2020 shows that positive anomalies on average over the territory of the region began to be recorded only since 1990. Then the mode of precipitation here is characterized by cyclicity. An analysis of precipitation anomalies shows that, in general, their negative values correspond to the dry phases of the cycle, while positive values correspond to wet ones, although wet years are noted in arid years, and dry years in humid ones. The average difference between the sum of atmospheric precipitation of different phases is about 50 mm. The values of climatic norms correspond to their average number for the general period. Precipitation norms do not reflect the climatic situation, and in order to solve applied problems in climate-dependent industries and adopt management strategies, it is more expedient to take into account the cycle phase of the territory's humidification regime.
About the Authors

Noskova Elena Viktorovna, Candidate of Sciences (Geography) Research Scientist, Laboratory of Geography and Environmental Management, Institute of Natural Resources, Ecology and Cryology SB RAS, PO Box 1032, Chita, 672002, Russian Federation, e-mail: elena-noskova-2011@mail.ru

Vakhnina Irina Leonidovna, Candidate of Sciences (Biology), Senior Researcher, Laboratory of Geography and Environmental Management, Institute of Natural Resources, Ecology and Cryology SB RAS, PO Box 1032, Chita, 672002, Russian Federation, e-mail: vahnina_il@mail.ru

For citation
Noskova E.V., Vakhnina I.L. Analysis of Climate Norms in the Trans-Baikal Territory. The Bulletin of Irkutsk State University. Series Earth Sciences, 2024, vol. 47, pp. 31-42. https://doi.org/10.26516/2073-3402.2024.47.31 (in Russian)
Keywords
climatic norm, base period, climate change, economic adaptation, Eastern Transbaikalia.
UDC
551.583(571.55)
DOI
https://doi.org/10.26516/2073-3402.2024.47.31
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