DOI: 10.1002/2015GL065626
论文题名: Charge and discharge of polar cold air mass in northern hemispheric winter
作者: Kanno Y. ; Abdillah M.R. ; Iwasaki T.
刊名: Geophysical Research Letters
ISSN: 0094-9166
EISSN: 1944-8897
出版年: 2015
卷: 42, 期: 17 起始页码: 7187
结束页码: 7193
语种: 英语
英文关键词: cold air outbreaks
; isentropic analysis
; polar cold air mass
Scopus关键词: Geophysics
; Charge and discharge
; Cold air mass
; Cold air outbreak
; Daily discharge
; Isentropic analysis
; Northern Hemispheres
; Potential temperature
; Pulsewidths
; Earth sciences
; air mass
; cold air
; cooling
; discharge
; Northern Hemisphere
; temperature
; Far East
; North America
英文摘要: This study shows the variability of polar cold air mass amount below potential temperature of 280 K, and north of 45N can be understood with a concept of charge and discharge, where anomalously large daily discharge indicates an intermittent occurrence of cold air outbreak. The polar cold air mass amount north of 45N gradually charges up due to diabatic cooling but dramatically discharges due to cold air outbreak with a pulse width of about 5 days. Cold air outbreaks tend to bring colder winter in East Asia and the east coast of North America, while warmer winter prevails on the northern side of these regions. The cold air mass amount south of 45N increases just after a cold air outbreak but returns to the normal level soon because of its life time of about 3 days. Therefore, monthly mean of total cold air mass amount in the Northern Hemisphere is negatively correlated with the monthly mean discharge. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943311951&doi=10.1002%2f2015GL065626&partnerID=40&md5=296e96a35dbef7ef74ad6df2df6db17a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8782
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Graduate School of Science, Tohoku University, Sendai, Japan
Recommended Citation:
Kanno Y.,Abdillah M.R.,Iwasaki T.. Charge and discharge of polar cold air mass in northern hemispheric winter[J]. Geophysical Research Letters,2015-01-01,42(17).