The Results of Precipitation Isotope Composition Monitoring in the Northern and Middle Urals

A. S. Kazantseva, O. I. Kadebskaya, Yu. V. Dublyanskii, and V. N. Kataev

The study presents the results of the monitoring of the isotope composition of precipitation which was performed using the GNIP (Global Network of Isotopes in Precipitation) techniques at Iskor and Kungur stations from December 2016 to June 2018. Data for Perm GNIP station for 1980–1990 are analyzed together with new data. The parameters of the local meteoric water line for the Perm krai are close to the parameters of the global one. The observation series of the meteorological parameters and the isotopic composition of precipitation exhibit high correlation at two stations, which means that they are controlled by the same factors. About 80% of annual variation in the precipitation isotope composition is determined by air temperature. The correlation between the amount of precipitation and its isotope composition for the short observation series at Iskor and Kungur stations is moderate and is absent for the long observation series at Perm station. The difference is explained by the abnormal precipitation regime in the Perm krai in 2017.