Water level regime of the Maima River (Altai Mountains) in the context of modern climate change

International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems: ENVIROMIS-2018

生态环境科学;计算机科学

Zuev, V.V.^1 ; Korotkova, E.M.^1 ; Uymanova, V.A.^1 ; Pavlinskiy, A.V.^1

Institute of Monitoring of Climatic and Ecological Systems SB RAS, Tomsk

634055, Russia^1

关键词: Air temperature;    Climatic changes;    Gauging stations;    Hydrological regime;    Low water;    Sludge formation;    Water mass;    Weather stations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/211/1/012072/pdf
DOI  :  10.1088/1755-1315/211/1/012072

来源: IOP

【 摘 要 】

Changes in the water level regime of the Maima River are studied in relation to observed climatic changes. The increased air temperature and decreased precipitation during the cold period leads to a decrease in the maximum flood level and a shift to later dates. A high correlation between the water level and precipitation is revealed in the period of summer and autumn low water. The trends in the mean and minimum water levels of the summer and autumn low-water periods are determined by the trends in the air temperature. Positive trends of the air temperature in the summer and autumn low-water periods contribute to the accumulation of water heat. Thus, due to the increase in the heat content of water mass and temperatures of November and December, the maximum water levels in the floods caused by sludge formation and ice jamming are becoming lower. Our analysis of the hydrological regime is based on Roshydromet monitoring data from 1940 to 2015 at a gauging station located in a village called Maima. The data on the monthly averaged air temperature and rainfall were obtained from a weather station in a village called Kyzyl-Ozek.