DOI: 10.1029/2017JD027503
Scopus记录号: 2-s2.0-85049868351
论文题名: Modulation of Extratropical Cyclones by Previous Cyclones via the Sea Surface Temperature Anomaly Over the Sea of Japan in Winter
作者: Zhao N. ; Iwasaki S. ; Yamamoto M. ; Isobe A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 12 起始页码: 6312
结束页码: 6330
语种: 英语
英文关键词: air-sea interactions
; cyclone-induced SST anomaly
; extratropical cyclones
; Sea of Japan
Scopus关键词: advection
; air-sea interaction
; cold air
; cooling
; extratropical cyclone
; potential vorticity
; sea surface temperature
; westerly
; winter
; Pacific Ocean
; Sea of Japan
英文摘要: The effects of a cyclone-induced sea surface temperature (SST) anomaly in the Sea of Japan on following cyclones were investigated using a regional numerical model. The model was conducted with and without an SST anomaly due to cooling from a single extratropical cyclone in winter. Twenty-six pairs of sensitivity experiments demonstrated that cyclones were not always sensitive to the SST anomaly. The low-level trough (strong northwesterly winds) affected cyclone sensitivity via a cold air intrusion over the Sea of Japan. A strong (weak) cold air intrusion formed a relatively unstable (stable) and higher (lower) convective layer and the concentration of cyclone paths over the oceans, making the cyclones sensitive to the underlying SST. Two specific cyclones were analyzed to demonstrate two distinct patterns (wave-like and path shifting, respectively) in cyclone modulations revealed in the wavelet spectra. The wave-like pattern was formed by the superposition of multiple anomalous waves with different periods and scales, which originated from upper-level potential vorticity anomalies and temperature advection. The path-shifting pattern was caused by the diabatic heating-induced potential vorticity anomalies, which were supplied by the intense heat and moisture from the regions surrounding the Sea of Japan. Therefore, a cyclone can modulate a following cyclone by reducing the SST over the Sea of Japan; however, the modulation can vary in different ways, depending on the atmospheric background and dynamics of the cyclone development. ©2018. 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/113679
Appears in Collections: 气候减缓与适应
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作者单位: Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Japan; Research Institute for Applied Mechanics, Kyushu University, Kasuga, Japan; Civil Engineering Research Institute for Cold Region, Sapporo, Japan
Recommended Citation:
Zhao N.,Iwasaki S.,Yamamoto M.,et al. Modulation of Extratropical Cyclones by Previous Cyclones via the Sea Surface Temperature Anomaly Over the Sea of Japan in Winter[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(12)