干旱区生态环境知识资源中心(Arid): Temporal Changes in Land Surface Coupling Strength: An Example in a Semi-Arid Region of Australia

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DOI	10.1175/JCLI-D-20-0250.1
	Temporal Changes in Land Surface Coupling Strength: An Example in a Semi-Arid Region of Australia
	Lo, Min-Hui; Wu, Wen-Ying; Tang, Lois Iping; Ryu, Dongryeol; Rashid, Mehnaz; Wu, Ren-Jie
通讯作者	Lo, MH (corresponding author), Natl Taiwan Univ, Dept Atmospher Sci, Taipei, Taiwan.
来源期刊	JOURNAL OF CLIMATE
ISSN	0894-8755
EISSN	1520-0442
出版年	2021
卷号	34 期号:4 页码:1503-1513
英文摘要	One of the critical components in understanding the climate system is the interaction between the land and the atmosphere. Whereas previous studies on land-atmosphere coupling mostly focus on its spatial hotspots, we explore the temporal evolution of land surface coupling strength (LCS) during a large-scale flood event in a semiarid region in northern Australia. The LCS indicates the relationship between soil moisture and latent heat flux, and the spatiotemporal variability in precipitation and soil water strongly affects the variability of LCS. The LCS is usually positive in the semiarid climate, where evapotranspiration (ET) occurs under the soil moisture-limited regime and thus increases with soil moisture. However, our analyses of combined land surface modeling and observational datasets show high temporal variability of LCS in the course of the extreme flood event followed by a drying period. The wet regions transferred the ET regime from the soil moisture-limited to the transition section, weakening the linear growth of ET with soil moisture, which resulted in the decline of LCS. The LCS remained weak until the flood retreated and the soil water approached the prestorm average state. Such temporal variation of the LCS has important implications for realistic parameterization of the land-atmosphere coupling and consequently improving subseasonal to seasonal climate forecast.
英文关键词	Australia Atmosphere-land interaction Flood events Evapotranspiration
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000615485200017
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347994
作者单位	[Lo, Min-Hui; Wu, Wen-Ying; Tang, Lois Iping; Rashid, Mehnaz; Wu, Ren-Jie] Natl Taiwan Univ, Dept Atmospher Sci, Taipei, Taiwan; [Ryu, Dongryeol] Univ Melbourne, Melbourne Sch Engn, Melbourne, Vic, Australia; [Wu, Wen-Ying] Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX USA; [Tang, Lois Iping] Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA
推荐引用方式 GB/T 7714	Lo, Min-Hui,Wu, Wen-Ying,Tang, Lois Iping,et al. Temporal Changes in Land Surface Coupling Strength: An Example in a Semi-Arid Region of Australia[J],2021,34(4):1503-1513.
APA	Lo, Min-Hui,Wu, Wen-Ying,Tang, Lois Iping,Ryu, Dongryeol,Rashid, Mehnaz,&Wu, Ren-Jie.(2021).Temporal Changes in Land Surface Coupling Strength: An Example in a Semi-Arid Region of Australia.JOURNAL OF CLIMATE,34(4),1503-1513.
MLA	Lo, Min-Hui,et al."Temporal Changes in Land Surface Coupling Strength: An Example in a Semi-Arid Region of Australia".JOURNAL OF CLIMATE 34.4(2021):1503-1513.