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DOI	10.1007/s00382-019-04730-3
	Elucidating observed land surface feedbacks across sub-Saharan Africa
	Notaro, Michael 1; Wang, Fuyao 1; Yu, Yan 2
通讯作者	Notaro, Michael
来源期刊	CLIMATE DYNAMICS
ISSN	0930-7575
EISSN	1432-0894
出版年	2019
卷号	53 期号:3-4 页码:1741-1763
英文摘要	This study examines the role of terrestrial forcings on the regional climate of sub-Saharan Africa through the application of a multivariate statistical method, stepwise generalized equilibrium feedback assessment, to an array of observational, reanalysis, and remote sensing data products. By applying multiple datasets, data uncertainty and the robustness of assessed land surface feedbacks are considered. The approach from our 2017 study is expanded to decompose the relative contribution of vegetation, soil moisture, and oceanic forcings; investigate the role of evapotranspiration (ET) partitioning in terrestrial feedbacks; and compare land surface feedbacks among four key regions, namely the Sahel, Greater Horn of Africa, West African monsoon region, and Congo. ET partitioning differs notably among sub-Saharan regions and between available observational datasets. Across sub-Saharan Africa as a whole, oceanic and terrestrial forcings impose a relatively comparable impact on year-round atmospheric conditions. The land surface feedbacks are most pronounced across the semi-arid Sahel and Greater Horn of Africa, although with unique seasonality of such feedbacks between regions. Moisture recycling is the dominant mechanism in these regions, with positive soil moisture-vegetation-rainfall feedbacks. The direct feedback of soil moisture anomalies on atmospheric conditions outweighed that of leaf area index anomalies. There is a clear need for more extensive observations of ET, its partitioning, and soil moisture across sub-Saharan Africa, as these data uncertainties propagate into the reliability of assessed soil moisture-ET feedbacks, particularly across the Sahel.
英文关键词	Land-atmosphere interactions Vegetation feedbacks Soil moisture feedbacks Africa
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000475558800030
WOS关键词	SOIL-MOISTURE ; GLOBAL PRECIPITATION ; CLIMATE VARIABILITY ; SAHEL RAINFALL ; VEGETATION FEEDBACK ; DECADAL VARIABILITY ; ARABIAN PENINSULA ; NORTHERN AFRICA ; PART I ; ATMOSPHERE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214910
作者单位	1.Univ Wisconsin Madison, Nelson Inst Ctr Climat Res, 1225 West Dayton St, Madison, WI 53706 USA; 2.Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90095 USA
推荐引用方式 GB/T 7714	Notaro, Michael,Wang, Fuyao,Yu, Yan. Elucidating observed land surface feedbacks across sub-Saharan Africa[J]. University of California, Los Angeles,2019,53(3-4):1741-1763.
APA	Notaro, Michael,Wang, Fuyao,&Yu, Yan.(2019).Elucidating observed land surface feedbacks across sub-Saharan Africa.CLIMATE DYNAMICS,53(3-4),1741-1763.
MLA	Notaro, Michael,et al."Elucidating observed land surface feedbacks across sub-Saharan Africa".CLIMATE DYNAMICS 53.3-4(2019):1741-1763.