| Abstract: | In this paper, a local record severe rainfall since 1949 occurring in the Shanghai urban area on 5-6 August, 2001 is investigated by using non-conventional observational data provided by the "973" basic research project of China, including automatic meteorological stations data, wind profiler data, Doppler radar echoes and GMS5 satellite data and NCEP data. By analyzing, it is revealed: (1) the heavy rainfall, caused by a serious of mesoscale βconvective cloud clusters developing inside the landing tropical depression (TD), occurred suddenly with the typical characteristics of urban heavy rainfall disaster; (2) the landing tropical depression, moved eastward to Shanghai and re-intensified before entering the sea, was very favorable for the occurrence of the heavy rainfall in Shanghai; (3) there may exists the interaction of different scale systems between the tropical depression and mesoscale convective cloud clusters; and (4) the various advanced intensive data contribute importantly to detect earlier and predict successfully the urban meteorological disasters. |
