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Title: 下層雲の維持とエアロゾル
Other Titles: Maintenance process of lower cloud and aerosol
Authors: 中村, 晃三1 Browse this author →KAKEN DB
Authors(alt): Nakamura, Koz1
Issue Date: 31-Mar-2014
Publisher: 北海道大学低温科学研究所
Journal Title: 低温科学
Journal Title(alt): Low Temperature Science
Volume: 72
Start Page: 241
End Page: 248
Abstract: 大気境界層内にできる層状雲は,長期間, 広い領域を覆うため, 地球の放射過程に大きな影響を及ぼす. そのような層状雲の生成, 維持, 消滅過程について, いくつかの興味深い研究について簡単に紹介する. 特に, エアロゾルは, 雲の生成過程において雲粒数密度など, そのミクロな特性に影響を与えるが, 雨への変換などその成長過程を通じ, 雲全体の光学的厚さ, 雲量, アルベドなど, そのマクロな特性にも大きな影響を与える. このとき, 条件によってエアロゾルの影響が異なった形で表れるというのが興味深い結果である. さらに, 消滅過程においても,エアロゾルの影響が関係していると考えられている. これらの研究について, 簡単に紹介した.
The boundary layer clouds have large effects on the Earth radiation budget through their high reflection of solar radiation with significant and long coverage. This paper introduces some interesting studies about the formation, maintenance, and dissipation process of the boundary layer clouds. Especially, the impacts of aerosol on the formation process of the boundary layer clouds through the microphysical process are important. Its effects on the macroscopic characteristics of clouds, such as optical thickness, cloud amount and albedo, through the conversion process from cloud droplets to rain drops are large. One of the interesting results of the studies is that the increasing effect of aerosol number density on the macroscopic feature changes its sign by the condition of the rainfall. The aerosol has impacts not only on the formation process of the boundary layer clouds but also the dissipating process of the clouds.
Description: Ⅴ. 数値モデルで観る雲・エアロゾル相互作用
Type: bulletin (article)
Appears in Collections:低温科学 = Low Temperature Science > 第72巻

Submitter: 低温科学研究所図書室

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