DOI: 10.1002/jgrd.50709
论文题名: Role of atmospheric waves in the formation and maintenance of the Northern Annular Mode
作者: Kuroda Y. ; Mukougawa H.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 16 起始页码: 9048
结束页码: 9063
语种: 英语
Scopus关键词: Digital storage
; Energy transfer
; Wave energy conversion
; Waves
; Weather forecasting
; Atmospheric waves
; European centre for medium-range weather forecasts
; Northern annular mode
; Northern Hemispheres
; Southern Annular Mode
; Stationary waves
; Transient waves
; Zonal-mean zonal winds
; Maintenance
; Arctic Oscillation
; atmospheric wave
; energy flux
; Northern Hemisphere
; research work
; standing wave
; wave energy
; weather forecasting
; winter
; zonal wind
英文摘要: We examined the roles of stationary, synoptic, and medium-scale atmospheric waves in the formation and maintenance of the Northern Annular Mode (NAM) in winter by analyses of zonal momentum and wave energy based on six-hourly reanalysis data from the European Centre for Medium-range Weather Forecasts (ECMWF ERA-Interim). Medium-scale waves have periods shorter than about two days and their effect has been overlooked in previous research on the NAM. The effect of medium-scale waves on the NAM is about 10% of that of total eddies. Although their effect on the NAM is of less importance than their effect on the Southern Annular Mode (SAM), it is still significant in the Northern Hemisphere. Our analysis also suggests that synoptic, medium-scale, and stationary waves provide positive feedback to the zonal-mean zonal wind of the NAM. In particular, energy transfer from synoptic and low-frequency transient waves to stationary waves plays a key role in sustaining the stationary waves that drive zonal winds associated with the NAM. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63397
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: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki, 305-0052, Japan; Disaster Prevention Research Institute, Kyoto University, Uji, Japan
Recommended Citation:
Kuroda Y.,Mukougawa H.. Role of atmospheric waves in the formation and maintenance of the Northern Annular Mode[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)