Asymmetric response of short- and long-duration dry spells to warming during the warm-rain season over Eastern monsoon China
文献类型：期刊论文
| 作者 | Li, Chenxi13; Gu, Xihui9,10,11,12,13; Bai, Wenkui7,8; Slater, Louise J.6; Li, Jianfeng5; Kong, Dongdong13; Liu, Jianyu3,4; Li, Yanan1,2 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 603页码:12 |
| ISSN号 | 0022-1694 |
| 关键词 | Warming temperature Longer-lasting Dry spells Warm-rain season Eastern Monsoon China |
| DOI | 10.1016/j.jhydrol.2021.127114 |
| 通讯作者 | Gu, Xihui(guxh@cug.edu.cn) ; Liu, Jianyu(liujy@cug.edu.cn) |
| 英文摘要 | Changes in dry spell duration have been analyzed over China and worldwide. However, the asymmetric response (i.e. skewed distribution) of short- and long-duration dry spells to warming temperature and possible mechanisms remain unknown. Here, we investigate this response based on daily weather observations during the warm-rain season (May-September) over 1961-2019 from 1540 quality-controlled stations across Eastern Monsoon China (EMC). Our results show a 1. warming in surface air temperature (SAT) and a considerable elongation of dry spells. Specifically, the regional average, maximum, and total dry spell duration over EMC increased by +7.06%, +6.17%, and +5.16%, respectively over 1961-2019. The areas in EMC with long dry spells and high SAT are also the areas that have experienced faster increases in the duration of dry spells per degree of warming. We find increases in the frequency of long-duration dry spells, but significant decreases in the frequency of short-duration dry spells. The increasing frequency of long-duration dry-spells can be explained by the slight increase in land evaporation (+1.6%/degrees C) over EMC and the decrease in integrated moisture vapor transport (-3.8%/degrees C) with warming, such that atmospheric moisture sources cannot meet the warming-induced demand, resulting in significant decreases in relative humidity (-2.4%/degrees C) and precipitation (-7.0%/degrees C). In contrast, the decreasing frequency of short-duration dry spells during hotter warm-rain seasons occurs when the saturation vapor pressure deficit is enhanced, leading to prolonged periods where the atmosphere is replenished to necessary saturation levels for local precipitation. Relative to cold warm-rain seasons, hot warm-rain seasons with higher SAT witness cold-dry air advection in the upper level, lower convective available potential energy, and stronger vapor divergence over EMC, which tends to suppress precipitation occurrence. With future warming, the increasing frequency and duration of dry spells in the warm-rain season is likely to be conducive to the occurrence of severe droughts and heatwaves in EMC, with negative impacts on socio-economic development in China. |
| WOS关键词 | SUMMER MONSOON ; CLIMATE-CHANGE ; WET SPELLS ; PRECIPITATION ; EPISODES ; DROUGHTS |
| 资助项目 | National Key R&D Program of China[2018YFA0605603] ; National Natural Science Foundation of China[41901041] ; National Natural Science Foundation of China[U1911205] ; National Natural Science Foundation of China[42001042] ; Central Educational Reform Fund for Colleges and Universities[2020G12] ; Talent Project-Scientist Program of China University of Geosciences ; Fundamental Research Funds for the Central Universities[lzujbky-2021-kb12] ; Open Fund of Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education[GTYR202003] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000715326800042 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Central Educational Reform Fund for Colleges and Universities ; Talent Project-Scientist Program of China University of Geosciences ; Fundamental Research Funds for the Central Universities ; Open Fund of Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education |
| 源URL | [http://ir.ieecas.cn/handle/361006/17192]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Gu, Xihui; Liu, Jianyu |
| 作者单位 | 1.Henan Univ, Coll Environm & Planning, Key Lab Geospatial Technol Middle & Lower Yellow, Kaifeng 475004, Peoples R China 2.Zhengzhou Tourism Coll, Zhengzhou 451464, Peoples R China 3.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Peoples R China 4.China Univ Geosci, Sch Geog & Informat Engn, Lab Crit Zone Evolut, Wuhan 430074, Peoples R China 5.Hong Kong Baptist Univ, Dept Geog, Hong Kong, Peoples R China 6.Univ Oxford, Sch Geog & Environm, Oxford OX1 3QY, England 7.Pengjiang Dist Nat Resources Bur, Jiangmen 529000, Peoples R China 8.Pengjiang Dist Sci & Technol Ctr, Jiangmen 529000, Peoples R China 9.Henan Univ, Key Lab Geospatial Technol Middle & Lower Yellow, Minist Educ, Kaifeng 475001, Peoples R China 10.Lanzhou Univ, Collaborat Innovat Ctr Western Ecol Safety, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chenxi,Gu, Xihui,Bai, Wenkui,et al. Asymmetric response of short- and long-duration dry spells to warming during the warm-rain season over Eastern monsoon China[J]. JOURNAL OF HYDROLOGY,2021,603:12. |
| APA | Li, Chenxi.,Gu, Xihui.,Bai, Wenkui.,Slater, Louise J..,Li, Jianfeng.,...&Li, Yanan.(2021).Asymmetric response of short- and long-duration dry spells to warming during the warm-rain season over Eastern monsoon China.JOURNAL OF HYDROLOGY,603,12. |
| MLA | Li, Chenxi,et al."Asymmetric response of short- and long-duration dry spells to warming during the warm-rain season over Eastern monsoon China".JOURNAL OF HYDROLOGY 603(2021):12. |
入库方式： OAI收割
来源：地球环境研究所
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