https://phys.org/news/2018-12-nasa-gpm-satellite-weakening-tropical.html

GPM's instruments including the Microwave Imager (GMI) and the Dual-Frequency Precipitation Radar (DPR) revealed that the powerful storms south of Kenanga's center are still producing very heavy rainfall at the rate of 214 mm (8.4 inches) per hour in that area. The rainfall in the northern half of the storm had decreased significantly. This GPM 3-D view of Kenanga is looking southwest and was derived by the DPR Ku Band of the radar on the satellite. It showed extremely powerful storms south of Kenanga's deteriorating eye were returning very strong reflectivity values which help to map the severity of the storm and the rainfall totals. The storm tops of the eyewall which had remained intact on the western side of the cyclone were reaching heights of 12.7 km (7.9 miles).

GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA.