The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes
文献类型：期刊论文
| 作者 | Liu, Xingcai2,3; Tang, Qiuhong2,4; Liu, Wenfeng3,5; Yang, Hong3,6; Groisman, Pavel1,7,8; Leng, Guoyong9; Ciais, Philippe5; Zhang, Xuejun2; Sun, Siao2 |
| 刊名 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 14期号:4页码:9 |
| 关键词 | heat extremes land-atmosphere coupling surface moisture humidity preceding rainfall |
| ISSN号 | 1748-9326 |
| DOI | 10.1088/1748-9326/ab018a |
| 通讯作者 | Tang, Qiuhong(tangqh@igsnrr.ac.cn) |
| 英文摘要 | In addition to high temperature, high humidity can have significant consequences on thermal comfort of human beings. The co-occurrence of high temperature and high humidity (so-called 'oppressive hot days') often results in heat stress events, but the extent to which it is affected by preceding surface moisture has not been fully understood to date. In this study, we examine the relations between preceding 3-month standardized precipitation index (SPI) and the number of hot days indicated by the surface air temperature (NHD-Tx) and the wet-bulb globe temperature (NHD-Wx) that combines both temperature and humidity in the hottest month in low latitudes. Results show that, in contrast with the negative correlations between SPI and NHD-Tx, which are associated with the previously reported precipitation deficit-temperature feedback, significant positive correlations between SPI and NHD-Wx are found in some low latitude areas. The probability of above-average NHD-Wx could be similar to 30% higher after wet conditions than that after dry conditions in areas like southern South America, some parts of Africa, and West Asia. Hotspot analyses further show that abundant preceding rainfall has an asymmetric impact on oppressive hot days by favoring more above-average NHD-Wx. Our analyses imply that a local feedback may exist between surface moisture and oppressive hot extremes, via which the unbearable heat stress over some parts of the tropics is modulated, controlled, and/or caused by changes in the preceding near-surface humidity/soil moisture. The spatially heterogeneous patterns of the relations between preceding rainfall and heat stress confirm the precipitation deficit-temperature feedback in many areas and reveal the coexistence of surface moisture-oppressive heat stress in several low latitude areas. We emphasize the necessity of considering both feedbacks for a better understanding of the distinct roles of preceding rainfall in the consequent development of heat stress in low latitudes. |
| WOS关键词 | SOIL-MOISTURE ; CLIMATE-CHANGE ; HOT SUMMERS ; SURFACE ; WAVES ; TEMPERATURE ; REDUCTION ; EXTREMES ; INCREASE ; DATABASE |
| 资助项目 | National Natural Science Foundation of China[41730645] ; National Natural Science Foundation of China[41790424] ; National Natural Science Foundation of China[41425002] ; National Natural Science Foundation of China[41877164] ; Chinese Academy of Sciences[KGFZD-135-17-009-3] ; Early Postdoctoral Mobility Fellowship - Swiss National Science Foundation[P2EZP2_175096] ; Ministry of Education and Science of the Russian Federation[14.B25.31.0026] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000462895800006 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China ; Chinese Academy of Sciences ; Early Postdoctoral Mobility Fellowship - Swiss National Science Foundation ; Ministry of Education and Science of the Russian Federation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/48691]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tang, Qiuhong |
| 作者单位 | 1.Hydrol Sci & Serv Corp, 920 Rockhold Dr, Asheville, NC 28804 USA 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Eawag, Swiss Fed Inst Aquat Sci & Technol, Ueberlandstr 133, CH-8600 Dubendorf, Switzerland 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 5.Univ Paris Saclay, CEA CNRS UVSQ, LSCE, IPSL, F-91191 Gif Sur Yvette, France 6.Univ Basel, MGU, Dept Environm Sci, Peterspl 1, CH-4003 Basel, Switzerland 7.North Carolina State Univ, NOAA, Natl Ctr Environm Informat, 151 Patton Ave, Asheville, NC 28801 USA 8.Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia 9.Univ Oxford, Environm Change Inst, Oxford OX1 3QY, England |
| 推荐引用方式 GB/T 7714 | Liu, Xingcai,Tang, Qiuhong,Liu, Wenfeng,et al. The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(4):9. |
| APA | Liu, Xingcai.,Tang, Qiuhong.,Liu, Wenfeng.,Yang, Hong.,Groisman, Pavel.,...&Sun, Siao.(2019).The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes.ENVIRONMENTAL RESEARCH LETTERS,14(4),9. |
| MLA | Liu, Xingcai,et al."The asymmetric impact of abundant preceding rainfall on heat stress in low latitudes".ENVIRONMENTAL RESEARCH LETTERS 14.4(2019):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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