New data assimilation system DNDAS for high-dimensional models
Huang Qun-bo1, 2, 3, †, 
, Cao Xiao-qun1, 3, Zhu Meng-bin1, 3, Zhang Wei-min1, 3, Liu Bai-nian1, 3
, Cao Xiao-qun1, 3, Zhu Meng-bin1, 3, Zhang Wei-min1, 3, Liu Bai-nian1, 3 Trends of the gradient norm: (a) Exp4-CG/BFGS, (b) Exp40-CG/BFGS, (c) Exp100-CG/BFGS, and (d) Exp400-CG/BFGS.
