Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027829 |
Stable Isotopes of Precipitation During Tropical Sumatra Squalls in Singapore | |
He, Shaoneng1; Goodkin, Nathalie F.1,2; Kurita, Naoyuki3; Wang, Xianfeng1,2; Rubin, Charles Martin1,2 | |
2018-04-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:7页码:3812-3829 |
文章类型 | Article |
语种 | 英语 |
国家 | Singapore; Japan |
英文摘要 | Sumatra Squalls, organized bands of thunderstorms, are the dominant mesoscale convective systems during the intermonsoon and southwest monsoon seasons in Singapore. To understand how they affect precipitation isotopes, we monitored the value of precipitation daily and continuously (every second and integrated over 30s) during all squalls in 2015. We found that precipitation O-18 values mainly exhibit a V-shape pattern and less commonly a W-shape pattern. Variation in O-18 values during a single event is about 1 to 6 with the lowest values mostly observed in the stratiform zone, which agrees with previous observations and modeling simulations. Reevaporation can significantly affect values, especially in the last stage of the stratiform zone. Daily precipitation is characterized by periodic negative shifts in value, largely associated with the squalls rather than moisture source change. The shifts can be more than 10, larger than intraevent variation. Initial O-18 values of events are highly variable, and those with the lowest values also have the lowest initial values. Therefore, past convective activities in the upwind area can significantly affect the O-18, and convection at the sampling site has limited contribution to isotopic variability. A significant correlation between precipitation O-18 value and regional outgoing longwave radiation and rainfall in the Asian monsoon region and western Pacific suggests that regional organized convection probably drives stable isotopic compositions of precipitation. A drop in the frequency of the squalls in 2015 is related to weak organized convection in the region caused by El Nino. |
英文关键词 | tropical organized convection Sumatra squalls precipitation stable isotopic composition El Nino Singapore |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430786500026 |
WOS关键词 | MESOSCALE CONVECTIVE SYSTEMS ; WATER-VAPOR ; OXYGEN ISOTOPES ; VARIABILITY ; DELTA-O-18 ; PACIFIC ; RAINFALL ; ENSO ; OSCILLATION ; EVAPORATION |
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/34094 |
专题 | 气候变化 |
作者单位 | 1.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore; 2.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore; 3.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi, Japan |
推荐引用方式 GB/T 7714 | He, Shaoneng,Goodkin, Nathalie F.,Kurita, Naoyuki,et al. Stable Isotopes of Precipitation During Tropical Sumatra Squalls in Singapore[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(7):3812-3829. |
APA | He, Shaoneng,Goodkin, Nathalie F.,Kurita, Naoyuki,Wang, Xianfeng,&Rubin, Charles Martin.(2018).Stable Isotopes of Precipitation During Tropical Sumatra Squalls in Singapore.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(7),3812-3829. |
MLA | He, Shaoneng,et al."Stable Isotopes of Precipitation During Tropical Sumatra Squalls in Singapore".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.7(2018):3812-3829. |
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