;In October 2014, Japan launched Himawari-8 which is the most advanced geostationary orbit satellite in the world. Himawari-8/AHI provides high quality 16-channels reflectance/radiance data at every 10 minutes temporal resolution from 500 meter to 2 km spatial resolution. Because polar orbit satellite can’t provide the cloud microphysical parameters with high temporal and spatial resolution, this study develops the retrieval system that focuses on the Taiwan and its vicinity from the multichannel observation from geostationary orbit satellite. In order to make sure the parameters quality from AHI retrieved, the research compare the retrieved cloud microphysical parameters with NASA EOS A-Train Aqua/MODIS, CloudSat/CPR and CALIPSO/CALIOP cloud products. During the onset of Southeast Asia monsoon, the South China Sea (SCS) is the water vapor passage with large scale circulation, owning multiscale weather and climate phenomenon. It also contains rapid evolution for multiscale system, ranging from climate to weather. There are many kind of complex cloud system in summer monsoon onset, hence, the research region is chosen to conduct comprehensive comparison and verification study for retrieved cloud microphysical parameters among both passive and active seniors onboard polar orbiting satellites. Initial validation of retrieved cloud microphysical properties indicates that there are good agreement between part of AHI and MODIS cloud-top pressure retrieval. From the cross analysis of active sensor observation, AHI has better CTP retrieval performance because it has better sensitivity in cirrus. Cloud-top pressure, cloud-top height and cloud optical thickness are all shown a reliable and good agreement between AHI and MODIS retrievals. There is discrepancy in cloud droplet effective radius between AHI and MODIS retrieval, in particular, when the cloud is optically thin and ice phase at high altitude.
