Recent trends in convective and stratiform rain rate under tropical cyclones and non-tropical cyclones conditions using satellite remote sensing data

Precipitation changes associated with tropical cyclones (TCs) have received increased attention, revealing distinct trends in convective and stratiform rain rates within TCs in recent decades based on satellite observational data. However, given the limited contribution of TCs to total precipitation, a notable knowledge gap remains regarding the evolution of convective and stratiform rain rates in non-TC conditions over the same period. Employing 22 years of precipitation data from the Tropical Rainfall Measurement Mission (TRMM), we investigated the temporal variations of stratiform and convective rain rates in non-TC environments during TC seasons from 1998 to 2019. Our findings reveal that the observed intensification of stratiform rain rates and weakening of convective rain rates in TCs are mirrored in non-TC rainfall over all ocean basins. These insights indicate the value of precipitation products from satellite remote sensing technology and contribute to an enhanced understanding of the hydrological cycle.