| Project/Area Number |
12440128
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | NATIONAL INSTITUTE OF POLAR RESEARCH |
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Principal Investigator |
FUJII Yoshiyuki NATIONAL INSTITUTE OF POLAR RESEARCH, ARCTIC ENVIRONMENT RESEARCH CENTER, PROFESSOR, 北極圏環境研究センター, 教授 (20125214)
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| Co-Investigator(Kenkyū-buntansha) |
MOTOYAMA Hideaki NATIONAL INSTITUTE OF POLAR RESEARCH, DIVISION OF RESEARCH, ASSOCIATE PROFESSOR, 研究系, 助教授 (20210099)
AZUMA Kumiko (GOTO Kumiko) NATIONAL INSTITUTE OF POLAR RESEARCH, DIVISION OF RESEARCH, ASSOCIATE PROFESSOR, 研究系, 助教授 (80202620)
YAMANOUCHI Takashi NATIONAL INSTITUTE OF POLAR RESEARCH, ANTARCTIC ENVIRONMENT MONITORING RESEARCH CENTER, PROFESSOR, 南極圏環境モニタリング研究センター, 教授 (00141995)
AOKI Teruo METEOROLOGICAL RESEARCH INSTITUTE, PHYSICAL METEOROLOGY RESEARCH DEPARTMENT, RESEARCHER, 物理気象研究部, 主任研究官
SUZUKI Toshitaka YAMAGATA UNIVERSITY, FACULTY OF SCIENCE, ASSOCIATE PROFESSOR, 理学部, 助教授 (90202134)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Dusts / Ice core / Optical depth / Radiative forcing / Antarctica / Dome F / Glacial cycle / Climate change |
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| Research Abstract |
To evaluate role of aeorlian dusts in climate, concentration and size distribution of microparticles were measured for various polar ice cores. Study of microparticles in a 2503 m deep ice core from Dome F, Antarctica, which covers past 320 k-years, shows that a short wave radiative forcing of dust is +0.3 W m-2 at the 4 km height and-0.05 W m-2 at ice sheet surface even in the cold stage of glacial when highest dust concentration was measured. The result suggests minor role of dusts in the climate in the high Southern latitudes.
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