Chemical and dynamical impacts of stratospheric sudden warmings on Arctic ozone variability
نویسندگان
چکیده
منابع مشابه
The 2010 Antarctic ozone hole: Observed reduction in ozone destruction by minor sudden stratospheric warmings
Satellite observations show that the 2010 Antarctic ozone hole is characterized by anomalously small amounts of photochemical ozone destruction (40-60% less than the 2005-2009 average). Observations from the MLS instrument show that this is mainly related to reduced photochemical ozone destruction between 20-25 km altitude. Lower down between 15-20 km the atmospheric chemical composition and ph...
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Sudden stratospheric warmings (SSWs) are usually considered to be initiated by planetary wave activity. Here it is asked whether small-scale variability (e.g., related to gravity waves) can lead to SSWs given a certain amount of planetary wave activity that is by itself not sufficient to cause a SSW. A highly vertically truncated version of the Holton–Mass model of stratospheric wave–mean flow ...
متن کاملOn the Relationship between ENSO, Stratospheric Sudden Warmings, and Blocking
This paper examines the influence of El Ni~ no–Southern Oscillation (ENSO) on different aspects of major stratospheric sudden warmings (SSWs), focusing on the precursor role of blocking events. The results reveal an ENSO modulation of the blocking precursors of SSWs. European and Atlantic blocks tend to precede SSWs during El Ni~ no (EN), whereas eastern Pacific and Siberian blocks are the pref...
متن کاملThe surface impacts of Arctic stratospheric ozone anomalies
In the Arctic stratosphere, total column ozone in the spring can vary, from year to year, by as much as 30%. This large interannual variability, however, is absent from many presentgeneration climate models, in which the prescribed seasonal cycle of stratospheric ozone includes, at best, smooth multi-decadal trends. We here investigate the extent to which interannual variability in Arctic strat...
متن کاملZonal-Mean Dynamics of Extended Recoveries from Stratospheric Sudden Warmings
The recovery of theArctic polar vortex following stratospheric suddenwarmings is found to take upward of 3 months in a particular subset of cases, termed here polar-night jet oscillation (PJO) events. The anomalous zonal-mean circulation above the pole during this recovery is characterized by a persistently warm lower stratosphere, and above this a cold midstratosphere and anomalously high stra...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 2016
ISSN: 2169-897X
DOI: 10.1002/2016jd025128