RELATIONSHIP BETWEEN SPATIAL AND TEMPORAL VARIABILITY OF PRECIPITATION AND FEATURES OF REGIONAL CIRCULATION (FOR THE TERRITORY OF ALTAI REGION)
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Abstract
The work is devoted to establishing a connection between the variability of seasonal precipitation on the flat territory of the Altai Territory and the features of regional atmospheric circulation over the last decade. The MCI meridionality index was used as a parameter characterizing local interlatitudinal exchange and determining the predominance of latitudinal or meridional processes in a particular region. It is shown that the difference between the analyzed parameters for the cold and warm seasons is associated with the characteristics of seasonal pressure fields. It has been established that the correlation between precipitation and the MCI index is stronger in the warm season than in the cold season. Heopotential (850gPa) spatial analysis confirms the conclusion that the interlatitudinal exchange has a more significant influence on the humidification regime of the study area in the warm season compared to the cold season.
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References
База данных GPCC [Электронный ресурс]. URL: https://www.dwd.de/EN/ourservices/gpcc/gpcc.html (дата обращения: 17.06.2024).
База данных GPCP URL: https://www.ncei.noaa.gov/products/climate-data-records/precipitation-gpcp-monthly (дата обращения: 18.06.2024).
База данных ERA5 [Электронный ресурс]. URL: https://confluence.ecmwf.int/display/CKB/ERA5%3A+data+documentation. (дата обращения: 19.06.2024).
База данных NCEP/NCAR [Электронный ресурс]. URL: https://psl.noaa.gov/data/gridded/data.ncep.reanalysis.html (дата обращения: 20.06.2024).
Francis J.A., Vavrus S.J. Evidence linking Arctic amplification to extreme weather in mid-latitudes // Geophys. Res. Lett. 2012. Vol. 39 (6). L06801. doi: 10.1029/2012GL051000
Fukutomi Y, Masuda K, Yasunari T. Cyclone activity associated with the interannual seesaw oscillation of summer precipitation over northern Eurasia // Global and Planetary Change. 2007. Vol. 56. P. 387–398.
Hiyama T., Fujinami H, Kanamori H., Ishige T. and Oshima K. Recent interdecadal changes in the interannual variability of precipitation and atmospheric circulation over northern Eurasia // Environment Research Letters. 2016. Vol. 11. doi: 10.1088/1748-9326/11/6/065001