摘要:This paper focuses on the investigation of the rainfall variations due to twin typhoons Saola and Damrey occurred in 2012 over Northwest Pacific Ocean (NPO). Genesis and landfall of the two typhoons are on the same day, however the track and rainfall area are different. We have chosen the Global Precipitation Climatology Project (GPCP) and Tropical Rainfall Measuring Mission (TRMM) data for this analysis. The results are illustrating as follows: typhoon Saola produced higher rainfall than typhoon Damery. The rainfall pattern of typhoon Saola having sufficient affect typhoon Damrey rainfall over the ocean, however after landfall produced rainfall over the land. Comparison of two rainfall data sets revealing that TRMM data is better for identifying heavy rainfall due to typhoon.