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DOI | 10.1175/JAS-D-17-0285.1 |
The Energetics and Magnitude of Hydrometeor Friction in Clouds | |
Igel, Matthew R.; Igel, Adele L. | |
2018-04-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:4页码:1343-1350 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | As hydrometeors fall within or from a cloud, they reach a terminal velocity because of friction with the air through which they settle. This friction has previously been shown to result in significant vertically integrated dissipation of energy, but the nature and vertical profile of this dissipation warrant further investigation. Here, its energetic origin is discussed. It is confirmed explicitly that the dissipated energy originates from the conversion of hydrometeor potential energy during settling as suggested in an earlier study by Pauluis and Held. The magnitude of this heating is then analyzed in a cloud-resolving model simulation of tropical, aggregated convection. Maximum heating from hydrometeor friction reaches similar to 10 K h(-1). The simulation is compared to one without hydrometeor frictional heating. For the case simulated, hydrometeor frictional heating results in a drier mean state, greater cloud cover, lessened convective mass flux, and a warmer atmosphere throughout much of the troposphere. It is suggested that the heating imparted to the atmosphere by dissipation allows the air to recover most of the energy previously expended in lofting hydrometeors. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430749000019 |
WOS关键词 | RADIATIVE-CONVECTIVE EQUILIBRIUM ; ENTROPY BUDGET ; ATMOSPHERE ; DISSIPATION ; MODEL ; AEROSOL ; ENERGY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29339 |
专题 | 地球科学 |
作者单位 | Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA |
推荐引用方式 GB/T 7714 | Igel, Matthew R.,Igel, Adele L.. The Energetics and Magnitude of Hydrometeor Friction in Clouds[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(4):1343-1350. |
APA | Igel, Matthew R.,&Igel, Adele L..(2018).The Energetics and Magnitude of Hydrometeor Friction in Clouds.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(4),1343-1350. |
MLA | Igel, Matthew R.,et al."The Energetics and Magnitude of Hydrometeor Friction in Clouds".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.4(2018):1343-1350. |
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