@phdthesis{73759, author = {Niels Bormann and Massimo Bonavita and A. McNally}, title = {Progress towards better representation of observation and background errors in 4DVAR}, year = {2015}, journal = {Seminar on Use of Satellite Observations in Numerical Weather Prediction, 8-12 September 2014}, month = {2015}, address = {Shinfield Park, Reading}, language = {eng}, }