干旱区生态环境知识资源中心(Arid): Satellite-Observed Vegetation Responses to Intraseasonal Precipitation Variability

Arid

DOI	10.1029/2022GL099635
	Satellite-Observed Vegetation Responses to Intraseasonal Precipitation Variability
	Harris, Bethan L.; Taylor, Christopher M.; Weedon, Graham P.; Talib, Joshua; Dorigo, Wouter; van der Schalie, Robin
通讯作者	Harris, BL
来源期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2022
卷号	49 期号:15
英文摘要	There is limited understanding of how vegetation responds to intraseasonal modes of rainfall variability despite their importance in many tropical regions. We use observations of precipitation and X-band Vegetation Optical Depth (VOD) from 2000 to 2018 to assess the relationships between rainfall and vegetation water content on 25-60-day timescales. Cross-spectral analysis identifies coherent intraseasonal relationships between precipitation and VOD, mostly in arid or semi-arid regions where vegetation is water-limited. Changes in VOD tend to lag anomalous rainfall, usually within 7 days. The fastest vegetation response is observed in sparsely vegetated areas (median 3 days). Following strong intraseasonal wet events, anomalously high VOD can persist for 2 months after the rainfall peak. This vegetation response can feed back onto the atmosphere, so improved representation of vegetation responses in models has the potential to improve subseasonal-to-seasonal forecasts.
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000838388800001
WOS关键词	SURFACE SOIL-MOISTURE ; MADDEN-JULIAN OSCILLATION ; OPTICAL DEPTH ; MICROWAVE EMISSION ; CLIMATE ; PATTERNS ; SENSITIVITY ; ATMOSPHERE ; FEEDBACKS ; RAINFALL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392951
推荐引用方式 GB/T 7714	Harris, Bethan L.,Taylor, Christopher M.,Weedon, Graham P.,et al. Satellite-Observed Vegetation Responses to Intraseasonal Precipitation Variability[J],2022,49(15).
APA	Harris, Bethan L.,Taylor, Christopher M.,Weedon, Graham P.,Talib, Joshua,Dorigo, Wouter,&van der Schalie, Robin.(2022).Satellite-Observed Vegetation Responses to Intraseasonal Precipitation Variability.GEOPHYSICAL RESEARCH LETTERS,49(15).
MLA	Harris, Bethan L.,et al."Satellite-Observed Vegetation Responses to Intraseasonal Precipitation Variability".GEOPHYSICAL RESEARCH LETTERS 49.15(2022).