30 November 2017 Macrocirculaton processes responsible for precipitation in Altai
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Proceedings Volume 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 1046662 (2017) https://doi.org/10.1117/12.2287385
Event: XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2017, Irkutsk, Russian Federation
Abstract
The estimation of precipitation change in the Altai (1959-2015) was carried out using the Mann-Kendall-Sneyers test. It was found that the variation of precipitation has a step change point occurred in 1980. During the first interval (1959- 1980), the trend was mostly positive, whereas during the second interval (1981-2015) it was constantly negative. The step change point of precipitation in the Altai coincides with the beginning of the «Zonal epoch Elementary Circulation Mechanisms – ECM» for Siberian sector according to the Dzerdzeevskii classification. To clarify the role of various ECM in the Altai precipitation, we calculated the contribution of the ECM, which correspond to Siberian sector, into the changes of precipitation trends. It was found that the most significant contribution into the change of precipitation regime in the Altai was provided by the «West zonal and Southern meridional» Circulation group.
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N. S. Malygina, T. V. Barlyaeva, T. S. Papina, N. Yu. Kurepina, N. A. Ryabchinskaya, A. N. Eirikh, "Macrocirculaton processes responsible for precipitation in Altai", Proc. SPIE 10466, 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1046662 (30 November 2017); doi: 10.1117/12.2287385; https://doi.org/10.1117/12.2287385
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