Validation of MODIS cloud products using SKYNET data

Pradeep Khatri; Tamio Takamura; Hitoshi Irie; Hiroaki Kuze; Keiji Imaoka

Presentation information

International Session (Oral)

Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG09] Satellite Earth Environment Observation

Wed. May 27, 2015 9:00 AM - 10:45 AM 301B (3F)

Convener:*Riko Oki(Japan Aerospace Exploration Agency), Tadahiro Hayasaka(Graduate School of Science, Tohoku University), Kaoru Sato(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Masaki Satoh(Atmosphere and Ocean Research Institute, The University of Tokyo), Nobuhiro Takahashi(National Institute of Information and Communications Technology), Yoshiaki HONDA(Center for Environmental Remote Sensing, Chiba University), Kenlo Nasahara(Faculty of Life and Environmental Sciences, University of Tsukuba), Takashi Nakajima(Tokai University, School of Information Science & Technology, Dept. of Human & Information Science), Taikan Oki(Institute of Industrial Science, The University of Tokyo), Tatsuya Yokota(National Institute for Environmental Studies), Yukari Takayabu(Atmosphere and Ocean Research Institute, the University of Tokyo), Hiroshi Murakami(Earth Observation Research Center, Japan Aerospace Exploration Agency), Hajime Okamoto(Kyushu University), Chair:Takuji Kubota(Earth Observation Research Center,Japan Aerospace Exploration Agency)

9:30 AM - 9:45 AM

[ACG09-02] Validation of MODIS cloud products using SKYNET data

*Pradeep Khatri¹, Tamio Takamura¹, Hitoshi Irie¹, Hiroaki Kuze¹, Keiji Imaoka² (1.Chiba University, 2.JAXA)

AMSR2/GCOM-W, which runs along with MODIS/AQUA in A-train satellite constellation, is capable of observing various products related to water. The integrated cloud liquid water observed over global ocean is one of such products. Validation of such product using surface observation data is a challenge because of difficulty associated with deployment of instruments over the ocean for a long period. We attempt to validate liquid water path from AMSR2 through two steps: validation of MODIS/AQUA cloud products using SKYNET data and then use of MODIS/AQUA data to validate AMSR2/GCOM-W products. As the first part, we used several types of data related to cloud observed by SKYNET to validate MODIS cloud products. For example, we derived cloud optical thickness and effective radius from the sky radiometer and compared them with MODIS products. We further calculated down welling shortwave fluxes using MODIS data and compared them with directly observed data by instruments of different field of view. Data of the microwave radiometer were also analyzed. Our results suggest that MODIS based cloud optical thicknesses of both water and ice clouds are likely to be underestimated.