TY - GEN
AU - Marta Janiskova
AU - Philippe Lopez
AB - A comprehensive set of linearized physical parametrizations has been developed for the global ECMWF Integrated Forecasting System. Implications of the linearity constraint for any parametrization scheme, such as the need for simplification and regularization, are discussed. The description of the methodology to develop linearized parametrizations highlights the complexity of obtaining a physics package that can be efficiently used in practical applications. The impact of the different physical processes on the tangent-linear approximation and adjoint sensitivities, as well as their performance in data assimilation are demonstrated.
BT - ECMWF Technical Memoranda
DA - 01/2012
DO - 10.21957/fpi6me7mm
LA - eng
M1 - 666
N2 - A comprehensive set of linearized physical parametrizations has been developed for the global ECMWF Integrated Forecasting System. Implications of the linearity constraint for any parametrization scheme, such as the need for simplification and regularization, are discussed. The description of the methodology to develop linearized parametrizations highlights the complexity of obtaining a physics package that can be efficiently used in practical applications. The impact of the different physical processes on the tangent-linear approximation and adjoint sensitivities, as well as their performance in data assimilation are demonstrated.
PB - ECMWF
PY - 2012
EP - 26
T2 - ECMWF Technical Memoranda
TI - Linearized physics for data assimilation at ECMWF
UR - https://www.ecmwf.int/node/10163
ER -