Analysis of the Ozone Reduction Event Over the Southern Tip of South America in November 2009
Analysis of the Ozone Reduction Event Over the Southern Tip of South America in November 2009
复制标题
2009年11月南美洲南端臭氧减少事件分析
DOI:
10.1029/2017jd028096
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Mizuno Akira
中科院分区:
文献类型:
--
作者:
Akiyoshi Hideharu;Kadowaki Masanao;Nakamura Haruna;Sugita Takafumi;Hirooka Toshihiko;Harada Yayoi;Mizuno Akira
A reduction of the total ozone over the southern tip of South America lasting 3 weeks occurred in November 2009. Analyses of the ERA‐Interim reanalysis data and the total ozone observed by the Ozone Monitoring Instrument indicate that the total ozone reduction event was caused by a migration of the polar vortex toward the South American continent at the time of the vortex breakup. The vortex migration is associated with an enhanced wave flux from the troposphere at 120–150°W and 50–60°S to the west of the South American continent to the stratosphere over the southern part of the continent, which led to a large negative geopotential height anomaly in the lower stratosphere. In November, a blocking event was diagnosed from the 500‐hPa geopotential height over the west of the South American continent. These results suggest a relation between the long‐lasting reduction of the total ozone over the southern tip of South America and the blocking phenomenon in the troposphere of the Southern Hemisphere through wave propagation from the blocking region in 2009. Analysis of the total ozone anomaly for 50–60°S and 65–75°W over the southern tip of South America in November for 1979–2015 indicates that the negative ozone anomaly in November 2009 was one of the largest anomalies in this 37‐year period and was associated with the large negative geopotential height anomaly in the lower stratosphere. Analyses of dynamical fields were also conducted for other years with large geopotential height anomalies.
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DOI:
--
发表时间:
2009
期刊:
J.Geophys.Res. 114
影响因子:
--
作者:
Akiyoshi H.;L.B.Zhou;Y.Yamashita;K.Sakamoto;M.Yoshiki;T.Nagashima;M.Takahashi;J.Kurokawa;M.Takigawa;T.Imamura
通讯作者:
T.Imamura
影响因子:
--
作者:
M. C. Mendes;I. F. Cavalcanti;D. Herdies
通讯作者:
D. Herdies
DOI:
--
发表时间:
1965
期刊:
影响因子:
--
作者:
K. Labitzke
通讯作者:
K. Labitzke
影响因子:
--
作者:
E. Brinksma;J. Ajtić;J. Bergwerff;G. Bodeker;I. Boyd;J. D. Haan;W. Hogervorst;J. Hovenier;D. Swart
通讯作者:
D. Swart
DOI:
--
发表时间:
2007
期刊:
Nonlinear Dynamics in Geosciences, Edited by A. A. Tsonis and J. B. Elsne
影响因子:
--
作者:
Mukougawa;H.
通讯作者:
H.