assimilation system
1.In this context conventional and non-conventional observations (CDW) are assimilated by MM5 adjoint-model assimilation system so as to do research on the quality of the assimilation system and the role of CDW in improving the prediction. In this text the principal of constructing MM5 adjoint-model assimilation system is introduced amply.
2.When using the adjoint-model assimilation system, the experiment adding CDW can directly improve the wind forecast, but comparing the one not adding CDW it has little advantage over other elements forecast.
3.Remotely sensed observations of sea surface temperature(SST) have been assimilated into MIT general circulation model(MITgcm) for Bohai and Yellow sea, using the Ensemble Kalman Filter(EnKF). An EnKF assimilation system has been set up to have a study on ocean monitor and forecast for Bohai and Yellow sea.
4.The results of numerical experiments, using the four-dimensional variational data assimilation system of the nonhydrostatic mesoscale model MM5, show that: the tangent linear model and adjoint model conducted by keeping the "on-off" switches the same as the basic state, can provide a good approximation of the first-order information to the NLM perturbation and a good descent direction for the minimization procedure;
5.Application Research of Doppler Weather Radar Data Analysis and Assimilation in Mesoscale Synoptic System Numerical Simulation
6.Because we have a great capacity for assimilation, and because we have correct policies, even if some unhealthy phenomena appear, they cannot affect the foundations of our socialist system.
7.The development of digestive system of the white achama(Piaractus brachypomum,Cuvier)were studied using light and electron microscopy in this paper,in order to discuss the mechanism of digestion and assimilation,and provide some information to lucubrate nutriology and pathology of the white achama.
8.(2) Doppler radial velocities from the Korean Jindo radar are directlyassimilated into the WRF 3DVAR system for Typhoon Rusa (2002) case. Assimilation and simulation results show that vertical velocity increments,tuning of scale-lengths in recursive filter, GTS (the Global TelecommunicationsSystem) data and AWS (Automatic Weather Station) data, are all to improvethe performance of Typhoon initial vortex and subsequent prediction. Thedirect assimilation of radial velocities has especially positive impact.
