Abstract:

Physical process of structure and intensity change of tropical cyclone (TC) and its influencing factors are very complex. Sea-land-atmosphere complex interactions in the landing process often lead to mutation of TC structure and intensity, which makes prediction difficult. Recent scientific methods such as field scientific experiments and numerical simulations have been improved. Studies on TC structure and intensity also have some new progress, for example, abrupt intensity change of TC, and the impact of different underlying surfaces on changed TC intensity and so on. However, studies on some issues are still not comprehensive such as asymmetrical TC structure that impacts its intensity,?and the relationship between TC interior structure and intensity. Based on a lot of literatures, this paper summarizes the main factors affecting TC structure and intensity including environmental air current, underlying surface and internal structure, which provides references for improving forecast methods of TC structure and intensity.

Key words: Tropical cyclone, Intensity, Structure