气候变化领域集成服务门户(CCPortal): Characteristics of land-atmosphere energy and turbulent fluxes over the plateau steppe in central Tibetan Plateau

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DOI	10.3724/SP.J.1226.2016.00103
	Characteristics of land-atmosphere energy and turbulent fluxes over the plateau steppe in central Tibetan Plateau
	Li, MaoShan; Su, ZhongBo; Ma, YaoMing; Chen, XueLong; Zhang, Lang; Hu, ZeYong
通讯作者	Li, MS (通讯作者)
发表日期	2016
ISSN	1674-3822
起始页码	103
结束页码	115
卷号	8 期号:2
英文摘要	The land-atmosphere energy and turbulence exchange is key to understanding land surface processes on the Tibetan Plateau (TP). Using observed data for Aug. 4 to Dec. 3, 2012 from the Bujiao observation point (BJ) of the Nagqu Plateau Climate and Environment Station (NPCE-BJ), different characteristics of the energy flux during the Asian summer monsoon (ASM) season and post-monsoon period were analyzed. This study outlines the impact of the ASM on energy fluxes in the central TP. It also demonstrates that the surface energy closure rate during the ASM season is higher than that of the post-monsoon period. Footprint modeling shows the distribution of data quality assessments (QA) and quality controls (QC) surrounding the observation point. The measured turbulent flux data at the NPCE-BJ site were highly representative of the target land-use type. The target surface contributed more to the fluxes under unstable conditions than under stable conditions. The main wind directions (180 degrees and 210 degrees) with the highest data density showed flux contributions reaching 100%, even under stable conditions. The lowest flux contributions were found in sectors with low data density, e.g., 90.4% in the 360 degrees sector under stable conditions during the ASM season. Lastly, a surface energy water balance (SEWAB) model was used to gap-fill any absent or corrected turbulence data. The potential simulation error was also explored in this study. The Nash-Sutcliffe model efficiency coefficients (NSEs) of the observed fluxes with the SEWAB model runs were 0.78 for sensible heat flux and 0.63 for latent heat flux during the ASM season, but unrealistic values of -0.9 for latent heat flux during the post-monsoon period.
关键词	EDDY COVARIANCE MEASUREMENTS QUALITY ASSESSMENT STOCHASTIC-MODELS SONIC ANEMOMETER SURFACE-ENERGY BOUNDARY-LAYER HEAT-FLUX TEMPERATURE FOREST PARAMETERIZATION
英文关键词	turbulent energy flux; Asian summer monsoon; gap-filling; surface energy water balance model; central Tibetan Plateau
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS记录号	WOS:000391630300002
来源期刊	SCIENCES IN COLD AND ARID REGIONS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258673
推荐引用方式 GB/T 7714	Li, MaoShan,Su, ZhongBo,Ma, YaoMing,et al. Characteristics of land-atmosphere energy and turbulent fluxes over the plateau steppe in central Tibetan Plateau[J]. 中国科学院青藏高原研究所,2016,8(2).
APA	Li, MaoShan,Su, ZhongBo,Ma, YaoMing,Chen, XueLong,Zhang, Lang,&Hu, ZeYong.(2016).Characteristics of land-atmosphere energy and turbulent fluxes over the plateau steppe in central Tibetan Plateau.SCIENCES IN COLD AND ARID REGIONS,8(2).
MLA	Li, MaoShan,et al."Characteristics of land-atmosphere energy and turbulent fluxes over the plateau steppe in central Tibetan Plateau".SCIENCES IN COLD AND ARID REGIONS 8.2(2016).