基于总能量模的GRAPES全球模式奇异向量扰动研究-气象学报.PDFVIP

doi:10.11676/qxxb2013.043 GRAPES * LIU Yongzhu SHEN Xueshun LI Xiaoli 100081 National Metrological Center Of CMA Beijing 100081China 2012-08-15 2013-02-26 . .2013. GRAPES ..71 3 Liu Yongzhu, Shen Xueshun, Li Xiaoli.2013.Research on the singular vector perturbation of GRAPES global model based on total energy norm. Acta Meteorologica Sinica . 71(3)(in Chinese) Abstract Aimed to develop GRAPES global ensemble prediction system with on singular vectors (SVs) as the initial perturbations, the calculation of SVs with total energy norm as weight matrix is performed by using of the tangent linear and adjoint model of the GRAPES global dry dynamical model. The formulation of total energy norm based on the forecast variables of the GRAPES model is derived, and the correctness of SV calculation is verified by the singular vector verification method and linear approximation. The structure of SVs over the middle-high latitude area and their linear evolution are analyzed through 10-days experiment, it is found that GRAPES SVs based on total energy norm can grow fast during in the optimal time interval, and they can reflects the characteristics of the atmosphere baroclinic instability over in the middle-high latitude area. The vertical distribution of the total energy of GRAPES SV and its component (kinetic energy and potential energy) also show that GRAPES SVs could represent the instability in baroclinic atmosphere at the different levels in the troposphere in the middle-high latitude. Key words total energy norm, singular vectors, ensemble prediction, GRAPES model GRAPES GRAPES GRAPES GRAPES GRAPES () GRAPES GRAPES P456.7 1 1