Zhong Jian, Fei Jian-Fang, Dong Gang, Cheng Xiao-Ping, Sun Yi-Mei. Application of digital filter weak constraint four-dimensional variational data assimilation on typhoon initialization Ⅱ. Digital filter weight chosenJ. Acta Physica Sinica, 2014, 63(14): 149201. DOI: 10.7498/aps.63.149201