Estimation of non-linear links characteristics for basic meteorological fields over Northern Eurasia

S. V. Loginov; E. I. Moraru; E. V. Kharyutkina

doi:10.1117/12.2575620

12 November 2020 Estimation of non-linear links characteristics for basic meteorological fields over Northern Eurasia

S. V. Loginov, E. I. Moraru, E. V. Kharyutkina

Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115607G (2020) https://doi.org/10.1117/12.2575620
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

For the first time estimates of the non-linear relationships between the fields of the extreme values of basic meteorological variables (> 3σ) were obtained for the Northern Hemisphere, and their trends were established for the beginning of the 21st century. An approach, based on the cumulant analysis of the probability distribution, has been developed. It allowed us to identify non-linear (non-Gaussian) climate systems and determining their characteristics. It was shown that in the areas of baroclinic disturbances, non-Gaussian processes were significantly manifested in the troposphere of the Northern Hemisphere in a significant part of the territory (80-90%) in spring and autumn and were realized in a group of 3-4 elements (including vertical wind component, humidity or temperature) with 3 - 4 orders of magnitude connection. The application of this method simplifies the calculation of non-linear links of meteorological variables for prognostic problems solution.

Citation Download Citation

S. V. Loginov, E. I. Moraru, and E. V. Kharyutkina "Estimation of non-linear links characteristics for basic meteorological fields over Northern Eurasia", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115607G (12 November 2020); https://doi.org/10.1117/12.2575620

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