Long-term energy flux and radiation balance observations over Lake Ngoring, Tibetan Plateau (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Long-term energy flux and radiation balance observations over Lake Ngoring, Tibetan Plateau (SCI)
	Li Z. G.; Lyu S. H.; Ao Y. H.; Wen L. J.; Zhao L.; Wang S. Y.
刊名	Atmospheric Research
	2015
卷号	155 页码:13-25
英文摘要	It remains unclear what are the characteristics of the surface energy budget and the radiation balance over the lake at high altitudes. Here we report a nearly two-year ice-free time measurement (2011-2012) of energy flux and radiation balance using the eddy covariance method over Lake Ngoring, Tibetan Plateau. A persistent unstable atmospheric boundary layer was maintained over the lake, caused by a higher water surface temperature compared with the overlying atmosphere. As a result, the positive sensible heat (H) and latent heat (LE) fluxes almost lasted throughout the entire observation period. The heat storage period of the lake could last until September, and the strongest heating occurred in October from the lake to the atmosphere. Compared with the subtropical lake, Bowen ratios were larger in Lake Ngoring, caused by a large temperature difference and a small specific humidity difference between the water surface and the overlying air. The pattems of H versus the atmospheric stability differed from those of LE. H was large under unstable stratification conditions and significantly decreased in the nearly neutral and stable atmospheric stratification. By contrast, the large LE concentrated in the weak unstable to the nearly neutral atmospheric stratification, and clearly declined with increased atmospheric instability. Overall, the vertical specific humidity difference contributed more to LE than the wind speed. As regards H, the major contributors varied with the atmospheric stability. The intrusion of dry, cold air with strong wind could result in significant increases in H and LE (approximately 2.0-4.5 times as much as those of normal days); during this period, the stored energy in water dramatically decreased and even could provide 70% of the energy for H and LE. (C) 2014 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27319]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Li Z. G.,Lyu S. H.,Ao Y. H.,et al. Long-term energy flux and radiation balance observations over Lake Ngoring, Tibetan Plateau (SCI)[J]. Atmospheric Research,2015,155:13-25.
APA	Li Z. G.,Lyu S. H.,Ao Y. H.,Wen L. J.,Zhao L.,&Wang S. Y..(2015).Long-term energy flux and radiation balance observations over Lake Ngoring, Tibetan Plateau (SCI).Atmospheric Research,155,13-25.
MLA	Li Z. G.,et al."Long-term energy flux and radiation balance observations over Lake Ngoring, Tibetan Plateau (SCI)".Atmospheric Research 155(2015):13-25.