Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Advances in Modeling Earth Systems (JAMES). ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]A 4DEnVar-based Ensemble Four-Dimensional Variational (En4DVar) Hybrid Data Assimilation System for Global NWPs: System Description and Primary TestsAuthorsShujunZhuiDBinWangiDLinZhangiDJ. J.LiuiDYongzhuLiuJiandongGongShimingXuiDYongWangWenyuHuangLiLiuYujunHeXiangjunWuBinZhaoFajingChenSee all authors Shujun ZhuiDDepartment of Earth System Science, Tsinghua UniversityiDhttps://orcid.org/0000-0002-9973-3874view email addressThe email was not providedcopy email addressBin WangiDCorresponding Author• Submitting AuthorLASG, Institute of Atmospheric Physics, Chinese Academy of SciencesiDhttps://orcid.org/0000-0002-3133-7197view email addressThe email was not providedcopy email addressLin ZhangiDResearch and Development Division, Numerical Weather Prediction Center of China Meteorological AdministrationiDhttps://orcid.org/0000-0002-7152-9425view email addressThe email was not providedcopy email addressJ. J. LiuiDLASG, Institute of Atmospheric Physics, Chinese Academy of SciencesiDhttps://orcid.org/0000-0002-2996-5338view email addressThe email was not providedcopy email addressYongzhu LiuNumerical Weather Prediction Center of China Meteorological Administrationview email addressThe email was not providedcopy email addressJiandong GongChina Meteorological Administrationview email addressThe email was not providedcopy email addressShiming XuiDDepartment of Earth System Science, Tsinghua UniversityiDhttps://orcid.org/0000-0003-4999-3499view email addressThe email was not providedcopy email addressYong WangDepartment of Earth System Science, Tsinghua Universityview email addressThe email was not providedcopy email addressWenyu HuangMinistry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, Chinaview email addressThe email was not providedcopy email addressLi LiuTsinghua Universityview email addressThe email was not providedcopy email addressYujun HeChinese Academy of Sciencesview email addressThe email was not providedcopy email addressXiangjun WuResearch and Development Division, Numerical Weather Prediction Center of China Meteorological Administrationview email addressThe email was not providedcopy email addressBin ZhaoCMA Earth System Modeling and Prediction Centre, China Meteorological Administrationview email addressThe email was not providedcopy email addressFajing ChenNumerical Weather Prediction Center of China Meteorological Administrationview email addressThe email was not providedcopy email address