Controlling balance in an ensemble Kalman filter
Controlling balance in an ensemble Kalman filter
复制标题
控制集成卡尔曼滤波器中的平衡
DOI:
10.5194/npg-21-417-2014
复制
发表时间:
2014
影响因子:
2.2
通讯作者:
G. Gottwald
中科院分区:
文献类型:
--
作者:
G. Gottwald
Abstract. We present a method to control unbalanced fast dynamics in an ensemble Kalman filter by introducing a weak constraint on the imbalance in a spatially sparse observational network. We show that the balance constraint produces significantly more balanced analyses than ensemble Kalman filters without balance constraints and than filters implementing incremental analysis updates (IAU). Furthermore, our filter with the weak constraint on imbalance produces good rms error statistics which outperform those of ensemble Kalman filters without balance constraints for the fast fields.