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谈哲敏
- 南京大学大气科学学院中尺度灾害性天气教育部重点实验室
| Key Laboratory of Mesoscale Severe Weather/Ministry of Education
| Department of Atmospheric Sciences, Nanjing University, Nanjing 210093esoscale research conducted by Chinese meteorologists during the past four years is reviewed. Advances in theoretical studies include (a) mesoscale quasi-balanced and semi-balanced dynamics, derived through scale analysis and the perturbation method which are suitable for describing mesoscale vortices
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- 学者ID：4468301137
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Key Laboratory of Mesoscale Severe Weather/Ministry of Education
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Department of Atmospheric Sciences, Nanjing University, Nanjing 210093esoscale research conducted by Chinese meteorologists during the past four years is reviewed. Advances in theoretical studies include (a) mesoscale quasi-balanced and semi-balanced dynamics, derived through scale analysis and the perturbation method which are suitable for describing mesoscale vortices
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(b) subcritical instability and vortex-sheet instability
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(c) frontal adjustment mechanism and the effect of topography on frontgenesis
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and (d) slantwise vorticity development theories, the slantwise vortex equation, and moist potential vorticity (MPV) anomalies with precipitation-related heat and mass sinks and MPV impermeability theorem. Prom the MPV conservation viewpoint, the transformation mechanism between different scale weather systems is analyzed. Based on the data analysis, a new dew-point front near the periphery of the West Pacific subtropical high is identified. In the light of MPV theory and Q-vector theory, some events associated with torrential rain systems and severe storms are analyzed and diagnosed. Progress in mesoscale numerical simulation has been made in the development of meso-α, meso-βvortices, meso-γ-scale downbursts and precipitation produced by deep convective systems with MM5 and other mesoscale models.
