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	Atmospheric tracers during the 2003-2004 stratospheric warming event and impact of ozone intrusions in the troposphere
	Liu, Y.1; Liu, C. X.1,2; Wang, H. P.1,2; Tie, X. X.3; Gao, S. T.4; Kinnison, D.3; Brasseur, G.3
刊名	Atmospheric chemistry and physics
	2009
卷号	9期号:6页码:2157-2170
ISSN号	1680-7316
通讯作者	Liu, c. x.(lcx@mail.iap.ac.cn)
英文摘要	We use the stratospheric/tropospheric chemical transport model mozart-3 to study the distribution and transport of stratospheric o-3 during the remarkable stratospheric sudden warming event observed in january 2004 in the northern polar region. a comparison between observations by the mipas instrument on board the envisat spacecraft and model simulations shows that the evolution of the polar vortex and of planetary waves during the warming event plays an important role in controlling the spatial distribution of stratospheric ozone and the downward ozone flux in the lower stratosphere and upper troposphere (utls) region. compared to the situation during the winter of 20022003, lower ozone concentrations were transported from the polar region to mid-latitudes, leading to exceptional large areas of low ozone concentrations outside the polar vortex and "low-ozone pockets" in the middle stratosphere. the unusually long-lasting stratospheric westward winds (easterlies) during the 2003-2004 event greatly restricted the upward propagation of planetary waves, causing the weak transport of ozone-rich air originated from low latitudes to the middle polar stratosphere (30 km). the restricted wave activities led to a reduced extratropical downward ozone flux from the lower stratosphere to the lowermost stratosphere (or from the "overworld" into the "middleworld"), especially over east asia. consequently, during wintertime (15 december similar to 15 february), the total downward ozone transport on 100 hpa surface by the descending branches of brewer-dobson cir-culation over this region was about 10% lower during the 2003-2004 event. meanwhile, the extratropical total cross-tropopause ozone flux (ctof) was also reduced by similar to 25%. compared to the cold 1999-2000 winter, the vertical ctof in high latitudes (60 degrees similar to 90 degrees n) increased more than 10 times during the two warming winters, while the vertical ctof in mid-latitudes (30 degrees similar to 60 degrees n) decreased by 20 similar to 40%. moreover, during the two warming winters, the meridional ctof caused by the isentropic transport associating with the enhanced wave activity also increased and played an important role in the total extratropical ctof budget.
WOS关键词	CHEMICAL-TRANSPORT MODEL ; POLAR VORTEX ; GEOPHYSICAL VALIDATION ; POTENTIAL VORTICITY ; ARCTIC OSCILLATION ; DOWNWARD CONTROL ; MASS-EXCHANGE ; WINTER ; TEMPERATURE ; CIRCULATION
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000264625400023
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2401255
专题	中国科学院大学
通讯作者	Liu, C. X.
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, Beijing, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China 3.Natl Ctr Atmospher Res, Boulder, CO 80307 USA 4.Chinese Acad Sci, Inst Atmospher Phys, Lab Cloud Precipitat Phys & Severe Storms LACS, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Y.,Liu, C. X.,Wang, H. P.,et al. Atmospheric tracers during the 2003-2004 stratospheric warming event and impact of ozone intrusions in the troposphere[J]. Atmospheric chemistry and physics,2009,9(6):2157-2170.
APA	Liu, Y..,Liu, C. X..,Wang, H. P..,Tie, X. X..,Gao, S. T..,...&Brasseur, G..(2009).Atmospheric tracers during the 2003-2004 stratospheric warming event and impact of ozone intrusions in the troposphere.Atmospheric chemistry and physics,9(6),2157-2170.
MLA	Liu, Y.,et al."Atmospheric tracers during the 2003-2004 stratospheric warming event and impact of ozone intrusions in the troposphere".Atmospheric chemistry and physics 9.6(2009):2157-2170.

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