TY - JOUR A1 - Gottwald, G. A. A1 - Majda, A. J. T1 - A mechanism for catastrophic filter divergence in data assimilation for sparse observation networks JO - Nonlin. Processes Geophys. J1 - NPG VL - 20 IS - 5 SP - 705 EP - 712 Y1 - 2013/09/25 PB - Copernicus Publications SN - 1607-7946 UR - https://npg.copernicus.org/articles/20/705/2013/ L1 - https://npg.copernicus.org/articles/20/705/2013/npg-20-705-2013.pdf DO - 10.5194/npg-20-705-2013 ER -