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12 November 2020 Structure of the atmospheric circulation variability over Northern Hemisphere extratropical zone according to the observation and modelling data
V. V. Popova
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Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115607D (2020) https://doi.org/10.1117/12.2575610
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation
Abstract
The structure of the winter 500hPa geopotential height variability over the Northern Hemisphere extratropical zone is studied based on observations and simulations in CMIP5 experiments. We consider the shares of variability explained by the EOFs, spatial features of the patterns for the first three EOF (1-3), and the principal components of the PC (1-3) during the period of global temperature growth in 1977-1999. It is shown that the models are weak enough to reproduce the spatial and temporal features of the observed atmospheric circulation variability over the Northern Hemisphere extratropical zone. The main differences are due to the fact that the centers of actions associated with the structure of the AO/NAO modes are only partially reproduced, and the PNA structure is not reproduced.
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V. V. Popova "Structure of the atmospheric circulation variability over Northern Hemisphere extratropical zone according to the observation and modelling data", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115607D (12 November 2020); https://doi.org/10.1117/12.2575610
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KEYWORDS
Data modeling
Atmospheric modeling
Temperature metrology
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