Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.6452 |
A climatological study of the wet and dry conditions in the pre-summer monsoon season of the Philippines | |
Olaguera, Lyndon Mark P.1,2; Matsumoto, Jun1,3 | |
2019-12-28 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Japan; Philippines |
英文摘要 | This study investigates the climatology of the wet and dry conditions in the pre-summer monsoon season of the Philippines that are less emphasized in previous works. Wet cases (Type W), which account for about 23% of the total pre-summer monsoon days from 1979 to 2015, are identified from April 1 to the monsoon onset defined by the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA). The differences between the Type W and dry cases (Type D) are presented. The synoptic conditions associated with the Type W and Type D cases are sub-divided into two sub-types based on the wind conditions, the (a) westerly winds at 925 hPa (WINDS925hPa) intrusion over Luzon Island (120 degrees-122.5 degrees E, 12.5 degrees-22 degrees N) (Type W-W and Type D-W), and (b) enhanced easterly WINDS925hPa (Type W-E and Type D-E). The Type W-E (Type W-W) cases account for about 63.9% (36.1%) of the total Type W cases, while the Type D-E (Type D-W) cases account for about 88.1% (11.9%) of the total Type D cases. A subset of Type W-E cases (Type W-EDef), which features an eastward propagating cold front to the north of Luzon Island and an intensifying anticyclone to its west originating from the east of the Tibetan Plateau and their differences are also examined. These two opposing circulations interact with the subtropical high over the northern Pacific and the easterlies over Luzon Island, and form a deformation zone. The confluence region of this deformation zone, where the cold front interacts with the warm and humid air brought by the easterly WINDS925hPa, lies over Luzon Island and contributes to the convective activities during the pre-summer monsoon over this region. This is the first attempt to clarify and document the role of deformation zones as another synoptic-scale convective system during the pre-summer monsoon season of the country. |
英文关键词 | cold front deformation zone monsoon onset pre-summer monsoon |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000504607000001 |
WOS关键词 | RAINY-SEASON ; EAST-ASIA ; RAINFALL ; ONSET ; PRECIPITATION ; MARCH ; EVOLUTION |
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/225543 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Tokyo Metropolitan Univ, Dept Geog, 1-1 Minami Osawa, Hachioji, Tokyo 1920397, Japan; 2.Manila Observ, Reg Climate Syst Lab, Ateneo Manila Univ Campus, Quezon City, Philippines; 3.Japan Agcy Marine Earth Sci & Technol, Dynam Coupling Ocean Atmosphere Land Res Program, Yokosuka, Kanagawa, Japan |
推荐引用方式 GB/T 7714 | Olaguera, Lyndon Mark P.,Matsumoto, Jun. A climatological study of the wet and dry conditions in the pre-summer monsoon season of the Philippines[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019. |
APA | Olaguera, Lyndon Mark P.,&Matsumoto, Jun.(2019).A climatological study of the wet and dry conditions in the pre-summer monsoon season of the Philippines.INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
MLA | Olaguera, Lyndon Mark P.,et al."A climatological study of the wet and dry conditions in the pre-summer monsoon season of the Philippines".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019). |
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