Bhim Rao Vibhuti*
The impact of the three-step staircase topography on the features of precipitation around latitude 30°N in East Asia has not received much thorough research. This study used a combined dataset created from measurements made by the Tropical Rainfall Measuring Mission Precipitation Radar and Visible and Infrared Scanner from 1998 to 2012 reanalysis datasets to investigate the climatological characteristics of summer convective and stratiform precipitation on horizontal distribution, vertical structure, and diurnal variation in East Asia. Results demonstrate that the three-step staircase topography, particularly between the first staircase and its eastern section, clearly differs in terms of rain frequency, mean rain rate, and maximum echo reflectivity factor. Several from the East China Sea westward to the eastern portion of the first staircase, through the third staircase, and the second staircase along 30°N, there are slight variations in the echo-top height, the cloud-top height, the maximum echo reflectivity factor, and its corresponding height. However, the rate of precipitation fell twice as fast westward along this latitude, in response to the indirect effects of aerosols and humidity, respectively.
