@phdthesis{76468, author = {C. Snyder}, title = {Particle filters, the optimal proposal and high-dimensional systems}, year = {2012}, journal = {Seminar on Data assimilation for atmosphere and ocean, 6-9 September 2011}, pages = {161-170}, month = {2012}, publisher = {ECMWF}, address = {Shinfield Park, Reading}, language = {eng}, }