Global monthly rainfall estimates and other hydrological products like integrated Cloud Liquid Water (CLW) and Total Precipitable Water (TPW) have been produced from 1987 to present using measurements from the Defense Meteorological Satellite Program (DMSP) series of Special Sensor Microwave Imager (SSM/I). The aim of this paper is to present recent efforts that are necessary to extend the 21-year climate records of these valuable products. Since the DMSP F16 and F17 satellites was successfully launched carrying onboard the Special Sensor Microwave Imager/Sounder (SSMI/S), the first objective of this paper is focused on the application of SSMI/S channels to evaluate the performance of several hydrological products using the heritage of existing algorithms for SSMI. The second objective is related to the beacon interference in DMSP F15 22V occurred in August 2006. A proposed correction scheme will be tested in order to evaluate the performance of the aforementioned products on a monthly basis when compared with other satellite retrievals (F13 and F14).