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https://irlib.pccu.edu.tw/handle/987654321/26756
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| 题名: | Impact of 3-D topography on surface radiation budget over the Tibetan Plateau |
| 作者: | Lee, WL (Lee, Wei-Liang)
Liou, KN (Liou, K.N.)
Wang, CC (Wang, Chia-chi) |
| 贡献者: | Dept Atmospher Sci |
| 关键词: | GENERAL-CIRCULATION MODEL
TERRAIN |
| 日期: | 2013-07 |
| 上传时间: | 2014-02-25 14:28:37 (UTC+8) |
| 摘要: | The 3-D complex topography effect on the surface solar radiative budget over the Tibetan Plateau is investigated by means of a parameterization approach on the basis of "exact" 3-D Monte Carlo photon tracing simulations, which use 90 m topography data as building blocks. Using a demonstrative grid size of 10 x 10 km(2), we show that differences in downward surface solar fluxes for a clear sky without aerosols between the 3-D model and the conventional plane-parallel radiative transfer scheme are substantial, on the order of 200 W/m(2) at shaded or sunward slopes. Deviations in the reflected fluxes of the direct solar beam amount to about +100 W/m(2) over snow-covered areas, which would lead to an enhanced snowmelt if the 3-D topography effects had been accounted for in current climate models. We further demonstrate that the entire Tibetan Plateau would receive more solar flux by about 14 W/m(2), if its 3-D mountain structure was included in the calculations, which would result in larger sensible and latent heat transfer from the surface to the atmosphere. |
| 關聯: | THEORETICAL AND APPLIED CLIMATOLOGY Volume: 113 Issue: 1-2 Pages: 95-103 |
| 显示于类别: | [大氣系所] 期刊論文
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