Diagnosis Research of Frontogenesis of a Cold Front and Secondary Circulation in the Boundary Layer
冷锋边界层锋生和锋生环流的诊断研究

This paper is based on the densified data of the boundary layer of Mesoscale Weather Experimentof East China (MWEEC). A cold front frontogenesis process in the lower reaches of the Yangtze Riverand the Huaihe Rvier on April 28, 1983 is studied. Frontogenesis has three mesoscale character, such asnonhomgeneous and short term, which are obvious in the boundary layer. The boundary layer frontalsecondary circulation equation, which is based on the approximation of the Ekman momentum, is usedto make diagnose the synoptical process.