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Climatic impacts induced by winter wheat irrigation over North China simulated by the nonhydrostatic RegCM4.7

文献类型：期刊论文

作者Wu, Jia3,4; Han, Zhen-Yu3,4; Gao, Xue-Jie1,2; Liu, Zheng-Jia5
刊名ADVANCES IN CLIMATE CHANGE RESEARCH
出版日期2024-04-01
卷号15期号:2页码:197-210
关键词Nonhydrostatic regional climate model Irrigation effect Extreme events North China
ISSN号1674-9278
DOI10.1016/j.accre.2024.04.002
英文摘要Quantification of the impact of winter wheat irrigation on the climate and the occurrence of extreme climatic events over North China is crucial for regional adaptation planning. Previous related studies mainly focused on the impact on surface processes; however, few focused on the effects of extreme events using high-resolution nonhydrostatic regional climate models. Here, the 9-km-resolution nonhydrostatic RegCM4.7 was coupled with a crop irrigation scheme and an updated winter wheat irrigation dataset to better simulate irrigation effects. Two experiments were conducted with and without winter wheat irrigation to isolate the effects of irrigation. Results showed that irrigation simulation reduces the model biases in temperature, precipitation, latent heat flux, soil moisture, sensitive heat flux, and top-layer soil moisture. Moreover, it also reduces the bias and increases the correlation with observations obtained in irrigated areas, especially in summer, indicating better representation of irrigation schemes. Winter wheat irrigation tends to cause substantial cooling of the local surface maximum, minimum, and mean air temperatures (by -1.68, -0.34, and -0.79 degrees C, respectively) over irrigated areas of North China, with the largest changes observed in relation to maximum temperature. Additionally, precipitation is found to increase during spring and summer, which is strongly related to water vapor transport in the lower levels of the atmosphere. Further analyses indicated that the number of annual mean hot days decrease (-13.9 d), whereas the number of both comfort days (+10.2 d) and rainy days (days with total precipitation greater than 1 mm: +6.6 d) increase over irrigated areas, demonstrating beneficial feedback to human perception and agriculture. Fortunately, although the heat wave risk increases (number of annual mean heat wave days: +5.8 d), the impact is limited to small areas within irrigated region. Additionally, no notable change was found in terms of heavy rainfall events and precipitation intensity, which might be an undereastimation caused by the less water use in model simulation. Although winter wheat irrigation does not have notable impact on the climate of the surrounding region, it is an important factor for the local-scale climate.
WOS关键词HAIHE RIVER-BASIN ; SURFACE FLUXES ; WOOD-HARVEST ; MODEL ; WATER ; PRECIPITATION ; PLAIN ; EXTREMES ; DATASET ; CLOUD
资助项目National Key Research and Development Program of China[2022YFC3201703] ; National Natural Science Foundation of China[41805074] ; China Three Gorges Corporation[0704181] ; Key Innovation Team of China Meteorological Administration Climate Change Detection and Response[CMA2022ZD03]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:001246412800001
出版者KEAI PUBLISHING LTD
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Three Gorges Corporation ; Key Innovation Team of China Meteorological Administration Climate Change Detection and Response
源URL[http://ir.igsnrr.ac.cn/handle/311030/206521]  
专题区域可持续发展分析与模拟院重点实验室_外文论文
通讯作者Wu, Jia
作者单位1.Chinese Acad Sci, Inst Atmospher Phys, Climate Change Res Ctr, Beijing 100029, Peoples R China
2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Nanjing 210044, Peoples R China
3.China Meteorol Adm, Key Lab Climate Studies, Beijing 100081, Peoples R China
4.China Meteorol Adm, Natl Climate Ctr, Beijing 100081, Peoples R China
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Jia,Han, Zhen-Yu,Gao, Xue-Jie,et al. Climatic impacts induced by winter wheat irrigation over North China simulated by the nonhydrostatic RegCM4.7[J]. ADVANCES IN CLIMATE CHANGE RESEARCH,2024,15(2):197-210.
APA Wu, Jia,Han, Zhen-Yu,Gao, Xue-Jie,&Liu, Zheng-Jia.(2024).Climatic impacts induced by winter wheat irrigation over North China simulated by the nonhydrostatic RegCM4.7.ADVANCES IN CLIMATE CHANGE RESEARCH,15(2),197-210.
MLA Wu, Jia,et al."Climatic impacts induced by winter wheat irrigation over North China simulated by the nonhydrostatic RegCM4.7".ADVANCES IN CLIMATE CHANGE RESEARCH 15.2(2024):197-210.

入库方式： OAI收割

来源：地理科学与资源研究所

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