Abstract
GPM (global precipitation measurement) core observatory was launched by H-IIA･F23 rocket on 28 February, 2014 successfully. The first light images by mission instruments ; DPR (dual-frequency precipitation radar) and GMI (GPM microwave imager) were released on 25 March, 2014 by JAXA/NASA, which are verifying qualitative precipitation intensity in vertical and horizontal distribution. This review is describing overview of GPM core observatory with DPR, GMI, status of GPM constellation satellites, and GSMaP (global satellite mapping of precipitation).
