Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031477 |
Extreme Wet-Bulb Temperatures in China: The Significant Role of Moisture | |
Wang, Pinya1; Leung, L. Ruby2; Lu, Jian2; Song, Fengfei2; Tang, Jianping1 | |
2019-11-26 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:22页码:11944-11960 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | This paper investigates the extreme wet-bulb temperatures (TWs) in China, with a focus on understanding the relative contributions of temperature and moisture to the extremes. Analysis of station observations shows that daily extreme temperatures (T), specific humidity (q), and TWs generally co-occur in Southeastern China, while extreme TW and T rarely overlap in the arid and semiarid North and Northwest China. Overall, q contributes more than T to extreme TWs, especially in North and Northwest China. Based on the relative contributions of q and T, regional extreme TW events are classified as q dominated and T dominated, respectively, to study their large-scale environment. Cluster analysis of global reanalysis data shows that extreme TWs are generally accompanied by increased surface air temperature and humidity, concomitant with anomalous high pressure and notable water vapor flux convergence. However, important differences are also seen in the large-scale environment during q-dominated and T-dominated extreme TWs. During q-dominated extreme TWs, the large-scale environment favors convection, as indicated by ascending motions, decreased downward solar radiation as well as increased precipitable water and near-surface relative humidity. In contrast, during T-dominated extreme TWs, convection is inhibited by the large-scale environment that features descending motion and increased downward solar radiation, decreased precipitable water, and decreased relative humidity. Consistent with the contrasting environments, we demonstrate that T-dominated extreme TWs tend to last longer than q-dominated extremes. Given the significant role of moisture in extreme TWs, more research is needed to understand its impacts on heat stress now and in the future. |
英文关键词 | extreme wet bulb temperatures moisture synoptic environment China |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000498570100001 |
WOS关键词 | HEAT WAVES ; CHEMISTRY ; MORTALITY ; OZONE |
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/225810 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China; 2.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA |
推荐引用方式 GB/T 7714 | Wang, Pinya,Leung, L. Ruby,Lu, Jian,et al. Extreme Wet-Bulb Temperatures in China: The Significant Role of Moisture[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(22):11944-11960. |
APA | Wang, Pinya,Leung, L. Ruby,Lu, Jian,Song, Fengfei,&Tang, Jianping.(2019).Extreme Wet-Bulb Temperatures in China: The Significant Role of Moisture.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(22),11944-11960. |
MLA | Wang, Pinya,et al."Extreme Wet-Bulb Temperatures in China: The Significant Role of Moisture".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.22(2019):11944-11960. |
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