Notes on the correlation between sudden stratospheric warmings and solar activity
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Published:2019-05-28
Issue:3
Volume:37
Page:375-380
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ISSN:1432-0576
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Container-title:Annales Geophysicae
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language:en
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Short-container-title:Ann. Geophys.
Abstract
Abstract. A correlation between solar activity and normalized occurrence rate of
sudden stratospheric warmings (SSWs) has been found. As a proxy for solar
activity, the 10.7 cm solar radio flux has been used. In order to find the
correlation, we derived a normalized occurrence rate of major sudden stratospheric warmings (MSSWs) based on both the
ERA-40/ERA-Interim dataset and NCEP data. Based on this distribution, we
calculated the correlation coefficient, which amounts to 0.63, with a
significance of 90.68 %, for ERA-40/ERA-Interim, and 0.55 for the NCEP–NCAR-I reanalysis,
with a significance of 83.80 %. Additionally, we calculate correlation
coefficients for Lyman-alpha flux and sunspot numbers with the analogous
method for the same period.
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
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