A review of forecast error covariance statistics in atmospheric variational data assimilation. I: Characteristics and measurements of forecast error covariances - Bannister, R. N. (Quarterly journal of the Royal Meteorological Society, 2008)
Keywords: background error statistics; balance; calibration; Earth, ocean, space; Exact sciences and technology; External geophysics; Meteorology; multivariate; Physics of the high neutral atmosphere; separability; physical properties; Weather forecast; multivariate; covariance; Covariance matrix; Variance; balance; separability; Variational calculus; calibration; Measurement error; Data assimilation; background error statistics