On the Increased Precipitation Recycling by Large-Scale Irrigation over the Haihe Plain

作     者：Yunpeng GUI Qingming WANG Yong ZHAO Mengyang MA Haihong LI Jiaqi ZHAI Enchong LI Yunpeng GUI;Qingming WANG;Yong ZHAO;Mengyang MA;Haihong LI;Jiaqi ZHAI;Enchong LI

作者机构：Department of Hydraulic EngineeringTsinghua UniversityBeijing 100084 State Key Laboratory of Simulation and Regulation of Water Cycle in River BasinInstitute of Water Resources and Hydropower ResearchBeijing 100038 

出 版 物：《Journal of Meteorological Research》 (气象学报（英文版）)

年 卷 期：2022年第36卷第3期

页      面：450-461页

核心收录：

学科分类：082802[工学-农业水土工程] 08[工学] 0828[工学-农业工程] 09[农学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0706[理学-大气科学] 

基　　金：Supported by the National Key Research and Development Program of China(2021YFC3200200) National Science Fund for Distinguished Young Scholars of China(52025093 and 51625904) 

主　　题：irrigation precipitation recycling contribution of irrigation to precipitation Haihe Plain 

摘      要：Irrigation not only plays an important role in global food security,but it also affects aspects of the regional climate,including *** this study,we proposed a simple and convenient method to quantify the contribution of large-scale irrigation to precipitation by distinguishing the amount of evaporation generated by irrigation from local evaporation based on the precipitation recycling method.A case study was presented to show the increased precipitation recycling ratio and the contribution of irrigation to precipitation during the main irrigation period in the Haihe Plain from 1961 to *** found that the average precipitation recycling rates in the Haihe Plain are 8.32%,9.74%,and 10.36%in April,May,and June,*** contribution rates of irrigation to precipitation in the Haihe Plain are 3.76%,5.12%,and 2.29%in April,May,and June,*** total contribution of irrigation to precipitation during the main irrigation period is 3.77 mm;the respective contributions in April,May,and June are 0.72,1.70,and 1.35 *** contribution of irrigation to local precipitation is relatively small as the inflow of atmospheric moisture during the irrigation period is still the main factor affecting local ***,this part of the precipitation during the irrigation period alleviates the water shortage in the Haihe Plain to some extent.