DOI: 10.1002/jgrd.50256
论文题名: The large-scale frozen-in anticyclone in the 2011 Arctic summer stratosphere
作者: Allen D.R. ; Douglass A.R. ; Strahan S.E.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 6 起始页码: 2656
结束页码: 2672
语种: 英语
Scopus关键词: Chemical analysis
; Vortex flow
; Chemistry and transport models
; Filamentary structures
; Isentropic transport
; Meteorological analysis
; Microwave limb sounder
; Photochemical process
; Potential temperature
; Potential vorticity
; Models
; anticyclone
; arctic environment
; atmospheric transport
; diabatic process
; nitrous oxide
; numerical model
; photochemistry
; polar vortex
; stratosphere
; tracer
; warming
; Arctic
英文摘要: [1] The 2011 Arctic stratospheric final warming was characterized by a large-scale frozen-in anticyclone (FrIAC) that rapidly displaced the winter polar vortex, establishing unusually strong polar easterlies. A comprehensive overview of the 2011 FrIAC is provided using meteorological analyses, Microwave Limb Sounder (MLS) N2O observations, and N2O simulations from the Global Modeling Initiative (GMI) 3-D chemistry and transport model and the Van Leer Icosahedral Triangular Advection (VITA) 2-D (latitudelongitude) isentropic transport model. A vortex edge diagnostic is used to determine the FrIAC boundary, allowing quantification of several FrIAC properties. The 2011 FrIAC originated over North Africa in lateMarch and traveled eastward and poleward over 2weeks, forming a strong anticyclone that extended from ~580-2100K potential temperature (~25-50 km). Low potential vorticity (PV) was transported to the polewith the FrIAC in early April; during May, most of the PV signature decayed due to diabatic processes. A small remnant negative PV anomaly persisted near the pole until mid-June. Tracer equivalent latitude was low initially and remained low throughout the summer. GMI, VITA, and MLS showed elevated N2O in the FrIAC, although the peak value was smaller in GMI due to a subtropical low bias. The high-resolution (~20 km) VITA filamentary structure quantitatively matched most of the features observed by MLS when smoothed to match the MLS resolution. The high-N2O anomaly persisted in the middle stratosphere over 4 months until late August, when it was destroyed by horizontal and vertical shearing, combined with photochemical processes. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63865
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Remote Sensing Division, Naval Research Laboratory, Washington, DC, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Universities Space Research Association, Columbia, MD, United States
Recommended Citation:
Allen D.R.,Douglass A.R.,Strahan S.E.. The large-scale frozen-in anticyclone in the 2011 Arctic summer stratosphere[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(6)