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DOI | 10.1175/JAS-D-15-0330.1 |
Case Study of Potential Vorticity Tower in Three Explosive Cyclones over Eastern Asia | |
Pang, Huaji1,2,3; Fu, Gang1,2,4 | |
2017-05-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Three cases of explosively developing extratropical cyclones over eastern Asia are analyzed using ERA-Interim data. The morphological characteristics of the upper-tropospheric potential vorticity (PV) were examined. The common feature of all of these three cases is a hook-shaped high-PV streamer wrapping counterclockwise around the center of surface cyclones on the southern and eastern sides and an arch-shaped low-PV tongue that wrapped the high-PV hook head from the north. The hook-shaped high-PV tongue overlaps with the maximum centers of both the relative vorticity and static stability parameter, indicating the stratospheric nature of the PV source inside the hook-shaped high-PV tongue. The analysis indicates that there existed a deep tower of high PV above the surface cyclone at the time when these cyclones underwent explosive cyclogenesis. The high PV in the upper troposphere originates from the polar stratospheric PV reservoir associated with the tropopause-folding process. The high PV in the lower troposphere, however, is associated with the latent heat release, as nearly 70%-90% of the high-PV values in the lower troposphere reside in the region where the rainfall is the heaviest. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400730900007 |
WOS关键词 | LATENT-HEAT RELEASE ; NORTHERN-HEMISPHERE ; PV PERSPECTIVE ; LIFE-CYCLE ; PART I ; PRECIPITATION ; CYCLOGENESIS ; EVOLUTION ; ATLANTIC ; CLIMATOLOGY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29384 |
专题 | 地球科学 |
作者单位 | 1.Ocean Univ China, Dept Marine Meteorol, Qingdao, Peoples R China; 2.Ocean Univ China, Ocean Atmosphere Interact & Climate Lab, Qingdao, Peoples R China; 3.Qingdao Meteorol Bur, Qingdao, Peoples R China; 4.Ocean Univ China, Key Lab Phys Oceanog, Qingdao, Peoples R China |
推荐引用方式 GB/T 7714 | Pang, Huaji,Fu, Gang. Case Study of Potential Vorticity Tower in Three Explosive Cyclones over Eastern Asia[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(5). |
APA | Pang, Huaji,&Fu, Gang.(2017).Case Study of Potential Vorticity Tower in Three Explosive Cyclones over Eastern Asia.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(5). |
MLA | Pang, Huaji,et al."Case Study of Potential Vorticity Tower in Three Explosive Cyclones over Eastern Asia".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.5(2017). |
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