The climatic characteristic and its change of rainstorm over Qamdo in the past 36 years

Using daily precipitation data in Qamdo area from 1980 to 2015, the temporal and spatial distributions of total precipitation andrainstorm precipitation were analyzed.The time scale features of rainstorm days are also investigated by the application of Morlet waveletanalysis and Mann Kendall method.The results indicate that the total precipitation, rainstorm precipitation, torrential rain days in Qamdo areashowed a similar spatial distribution in the past 36a, which was larger in the northern Qamdo than in the south, while the rainstorm intensitywas stronger in the southern Qamdo.The rainstorms start in the northwest Qamdo, but ends at the southeast Qamdo.The total precipitation, rainstorm precipitation, torrential rain days and the rainfall intensity showed an increasing trend, however, not significant.The appearance ofrainstorm mainly concentrated in the first two ten-day of July and last ten-day of August in the ten-day's scale.Rainstorm days showed quasi-7a and quasi-12a, and quasi-22a three cycles, no obvious change in time domain.Summer rainstorm principally occurred in the evening.