HR: 0800h
AN: P31B-0981    [Abstracts]
TI: Influence on the atmospheric general circulation caused by the direct effect which dust exerts on radiation process
AU: * Chiba, M
EM: mchiba@mri-jma.go.jp
AB: The total amount of the soil particle (Aeolian-dust) danced by the wind from the dryness area is called annual 1000-3000Tg on the whole earth. The thing from Sahara Desert in North Africa occupies more than the half of these. The small particle of particle diameter piles up into the atmosphere among the danced soil particles for a long period of time (being weight quantity around about 1%). The particle which piles up into the atmosphere has the work which is scattered about or absorbs solar radiation. On the other hand, aeolian dust has the work which performs absorption and discharge as black-body to infrared radiation, and serves as a substance which has greenhouse effect to an earth air system. We developed an general circulation model (MASINGAR) incorporating each model about the radiation process in consideration of the influence on the solar radiation by generating of aeolian dust, transportation, each self-possessed process, and dust, and infrared radiation. The numerical experiment about influence done to the atmospheric general circulation of aeolian dust using this was conducted.
DE: 5415 Erosion and weathering
DE: 5445 Meteorology (3346)
DE: 3307 Boundary layer processes
DE: 1625 Geomorphology and weathering (1824, 1886)
DE: 0343 Planetary atmospheres (5405, 5407, 5409, 5704, 5705, 5707)
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting