A Four‐Dimensional Ensemble‐Variational (4DEnVar) Data Assimilation System Based on GRAPES‐GFS: System Description and Primary Tests

A Four‐Dimensional Ensemble‐Variational (4DEnVar) Data Assimilation System Based on GRAPES‐GFS: System Description and Primary Tests

Abstract A four‐dimensional ensemble‐variational (4DEnVar) data assimilation (DA) system was developed based on the global forecast system of the Global/Regional Assimilation and Prediction System (GRAPES‐GFS). Instead of using the adjoint technique, this system utilizes a dimension‐reduced projecti...

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Bibliographic Details
Main Authors: Shujun Zhu, Bin Wang, Lin Zhang, Juanjuan Liu, Yongzhu Liu, Jiandong Gong, Shiming Xu, Yong Wang, Wenyu Huang, Li Liu, Yujun He, Xiangjun Wu
Format: Article
Language:English
Published: American Geophysical Union (AGU) 2022-07-01
Series:Journal of Advances in Modeling Earth Systems
Subjects:
four‐dimensional ensemble‐variational data assimilation
DRP‐4DVar
GRAPES‐GFS
flow‐dependent
Online Access:https://doi.org/10.1029/2021MS002737

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