DOI: 10.1002/grl.50146
论文题名: Upper atmosphere response to stratosphere sudden warming: Local time and height dependence simulated by GAIA model
作者: Liu H. ; Jin H. ; Miyoshi Y. ; Fujiwara H. ; Shinagawa H.
刊名: Geophysical Research Letters
ISSN: 0094-9346
EISSN: 1944-9077
出版年: 2013
卷: 40, 期: 3 起始页码: 635
结束页码: 640
语种: 英语
英文关键词: global structure
; stratosphere sudden warming
; thermosphere response to lower atmosphere forcing
; vertical coupling
Scopus关键词: Computer simulation
; Cooling
; Tropical engineering
; Atmosphere models
; Atmospheric response
; Global structure
; Lower atmosphere
; Lower thermosphere
; Phase propagation
; Tropical regions
; Vertical coupling
; Upper atmosphere
; altitude
; cooling
; Gaia theory
; polar region
; stratosphere
; temperature gradient
; thermosphere
; tropical region
; upper atmosphere
英文摘要: The whole atmosphere model GAIA is employed to shed light on atmospheric response to the 2009 major stratosphere sudden warming (SSW) from the ground to exobase. Distinct features are revealed about SSW impacts on thermospheric temperature and density above 100 km altitude. (1) The effect is primarily quasi-semidiurnal in tropical regions, with warming in the noon and pre-midnight sectors and cooling in the dawn and dusk sectors. (2) This pattern exists at all altitudes above 100 km, with its phase being almost constant above 200 km, but propagates downward in the lower thermosphere between 100 and 200 km. (3) The northern polar region experiences warming in a narrow layer between 100 and 130 km, while the southern polar region experiences cooling throughout 100-400 km altitudes. (4) The global net thermal effect on the atmosphere above 100 km is a cooling of approximately -12 K. These characteristics provide us with an urgently needed global context to better connect and understand the increasing upper atmosphere observations during SSW events. Key Points Strong LT dependence in tropical regions Fast downward phase propagation between 100 and 200 km Global net cooling of -12 K on the atmosphere above 100 km ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878198249&doi=10.1002%2fgrl.50146&partnerID=40&md5=94e47e015504584b5555733c5e05cdb7
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6610
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Earth and Planetary Science Division, Kyushu University, Fukuoka, Japan
Recommended Citation:
Liu H.,Jin H.,Miyoshi Y.,et al. Upper atmosphere response to stratosphere sudden warming: Local time and height dependence simulated by GAIA model[J]. Geophysical Research Letters,2013-01-01,40(3).