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Gérald Desroziers, Loïk Berre, Vincent Chabot, and Bernard Chapnik

of the degrees of freedom for the analysis (the signal) to deviate from the background. The DFS associated with different Brightness temperature sounders ( Fig. 8 , middle panel) are particularly interesting to examine, since they show that the DFS are not again simply functions of the numbers of observations. Note, in particular, the large values of the DFS per observation for High Resolution Infrared Radiation Sounder (HIRS), Advanced Microwave Sounding Unit-B (AMSU-B), Meteorological Satellite

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Derek J. Posselt and Tomislava Vukicevic

microphysical parameterizations are all identical to those used in the NASA Goddard Cumulus Ensemble model ( Tao and Simpson 1993 ; Tao et al. 2003 ; Lang et al. 2007 ). The time series of a number of model output variables are shown in Figs. 2a–e , and it can be seen that the model produces realistic time evolution of precipitation rate (PCP), liquid and ice water path (LWP and IWP, respectively) and top of the atmosphere shortwave (SW) and longwave (LW) radiative fluxes [outgoing SW radiation (OSR) and

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