@article{wang_li_zang_yang_wu_2020,  title={Covariance localization in the ensemble transform Kalman filter based on an augmented ensemble},  volume={68},  ISSN={2675-2824},  url={https://doi.org/10.1590/s2675-28242020068309},  DOI={10.1590/s2675-28242020068309},  journal={Ocean and Coastal Research},  publisher={Instituto Oceanográfico da Universidade de São Paulo},  author={Wang, Jichao and Li, Jiacheng and Zang, Shaodong and Yang, Jungang and Wu, Guoli},  year={2020},  pages={e20309} }