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Program Activity

Program Activity


Climate Variations Research Program

Earth Simulator, the fastest supercomputer in the world, is finally operational since April, 2002. With this computer, active collaborative research has been conducted between the Earth Simulator Center and the Frontier Research System for Global Change.


In Climate Variations Research Program, two researchers, Drs. Yamane and Kagimoto have been playing the leading role of this joint research. Dr. Yamane is carrying out a detailed calculation of the meso-scale phenomena such as tropical storm and Baiu-front at global scale, using a super high resolution atmospheric general circulation model with triangular truncations of T639 and T1279 (which correspond to 20km and 10km horizontal resolution, respectively). This model is called AFES and is based on CCSR/NIES model. 

Meanwhile, Dr. Kagimoto is simulating the realistic ocean circulation system with the super high-resolution (approximately 10km horizontal resolution) ocean general circulation model based on the Princeton Ocean Model, which is called PFES. The research will excite us soon by providing microscopic view of Earth climate system.

Hydrological Cycle Research Program

In the Spring Conference on Japan Meteorological Society held in 22-24 May at Omiya, Japan, presenters from our program were; Program Director Dr. Yasunari, Group Leaders Drs. Kimura and Fujiyoshi, as well as Drs. Yamasaki, Takata, Suzuki, Endo, Ju, Fukutomi, Yoshikane, and Iwabuchi. 

Dr. Ma of Land Surface Processes and Land Atmosphere Interaction Group joined the Western Pacific Geophysics Meeting 2002 held at New Zealand in July, and presented his research on dry and semiarid areas in Mongolia.

In the Cloud and Precipitation Group, Group Leader Dr. Fujiyoshi participated in the Workshop on Japan-China Precipitation System Observational Research held in Hainan Province, China from 23-26 April and presented the research result on the model comparison experiment on meso-disturbance developed over the Baiu Front. Dr. Nakamura joined the workshop on GEWEX Cloud System Studies (GCSS) in Kananaskis and presented the result of the analysis and numerical simulation of some disturbances observed during WMO-01.


In April, Dr. Iwabuchi joined the Cloud and Precipitation Group. He is conducting his research, both from Observation and model perspectives, regarding the effects of three- dimensional radiative transmission on radiative characteristics of the clouds.

Global Warming Research Program

We would like to introduce Dr. Julia Hargreaves, a new researcher in the paleoclimate group.

Dr. Julia Hargreaves


Exactly one year ago I came to FRSGC to work as a visiting scien-tist in the paleoclimate group of the Global Warming Research Program.

Prior to coming to Japan, I worked as a researcher at the Proudman Oceanographic Laboratory near Liverpool in the UK for 6 years, studying ocean surface waves, with emphasis on the effects of climate change and impacts on the coastal environment. During my sabbatical, I have focussed on analysing paleo-data with the aim of gaining understanding the ice age terminations. Now I am employed as a Researcher and I am becoming more involved with the work program of the group.

My particular interest is in under-standing the mechanisms and feed-backs responsible for the very large climate changes apparent in the paleo-record over the last half-mil-lion years or so. At a technical level, my work tends to be in the area of model-data comparison.

Program Director, H. Akimoto attended "Air Pollution as a Climate Forcing Workshop" held in Honolulu during Aril 29 and May 3, midst of Golden Week. The venue was East West Center located in the cam-pus of University of Hawaii. The workshop was co-sponsored by IPRC together with NASA, NOAA, EPA, etc., and IPRC staff members took care of more than 100 participants.

The workshop theme was a link between non-CO 2 air pollutants such as methane, ozone and aerosol, and climate change. Wide range of topics including atmospheric chemistry, mitigation technology, and health effects were discussed.

Akimoto met all Japanese members of IPRC during a session interval as well as the IPRC Director, Dr. McCeary, at the reception. It was very good to have had a chance to get acquainted directly with IPRC with which we usually do not have close contact.


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