Comparison of Key Characteristics of Remarkable SSW Events in the Southern and Northern Hemisphere
Institute of Atmospheric Physics of the Czech Academy of Sciences, 14100 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(10), 1063; https://doi.org/10.3390/atmos11101063
Received: 10 September 2020 / Revised: 1 October 2020 / Accepted: 1 October 2020 / Published: 6 October 2020
(This article belongs to the Special Issue Dynamical and Chemical Processes of Atmosphere-Ionosphere Coupling)
An exceptionally strong sudden stratospheric warming (SSW) in the Southern Hemisphere (SH) during September 2019 was observed. Because SSW in the SH is very rare, comparison with the only recorded major SH SSW is done. According to World Meteorological Organization (WMO) definition, the SSW in 2019 has to be classified as minor. The cause of SSW in 2002 was very strong activity of stationary planetary wave with zonal wave-number (ZW) 2, which reached its maximum when the polar vortex split into two circulations with polar temperature enhancement by 30 K/week and it penetrated deeply to the lower stratosphere and upper troposphere. On the other hand, the minor SSW in 2019 involved an exceptionally strong wave-1 planetary wave and a large polar temperature enhancement by 50.8 K/week, but it affected mainly the middle and upper stratosphere. The strongest SSW in the Northern Hemisphere was observed in 2009. This study provides comparison of two strongest SSW in the SH and the strongest SSW in the NH to show difference between two hemispheres and possible impact to the lower or higher layers.
View Full-Text
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
- Supplementary File 1:
ZIP-Document (ZIP, 6970 KiB)
MDPI and ACS Style
Kozubek, M.; Lastovicka, J.; Krizan, P. Comparison of Key Characteristics of Remarkable SSW Events in the Southern and Northern Hemisphere. Atmosphere 2020, 11, 1063. https://doi.org/10.3390/atmos11101063
AMA Style
Kozubek M, Lastovicka J, Krizan P. Comparison of Key Characteristics of Remarkable SSW Events in the Southern and Northern Hemisphere. Atmosphere. 2020; 11(10):1063. https://doi.org/10.3390/atmos11101063
Chicago/Turabian StyleKozubek, Michal; Lastovicka, Jan; Krizan, Peter. 2020. "Comparison of Key Characteristics of Remarkable SSW Events in the Southern and Northern Hemisphere" Atmosphere 11, no. 10: 1063. https://doi.org/10.3390/atmos11101063
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
Search more from Scilit
