干旱区生态环境知识资源中心(Arid): Analysis of C-Band Radar Temporal Coherence Over an Irrigated Olive Orchard in a Semi-Arid Region

Arid

DOI	10.1109/JSTARS.2024.3352699
	Analysis of C-Band Radar Temporal Coherence Over an Irrigated Olive Orchard in a Semi-Arid Region
	Chakir, Adnane; Frison, Pierre-Louis; Villard, Ludovic; Ouaadi, Nadia; Fanise, Pascal; Said, Khabba; Le Dantec, Valerie; Zoubair, Rafi; Ezzahar, Jamal; Fruneau, Benedicte; Rudant, Jean-Paul; Lionel, Jarlan
通讯作者	Chakir, A
来源期刊	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
ISSN	1939-1404
EISSN	2151-1535
出版年	2024
卷号	17 页码:3635-3647
英文摘要	This article aimed to monitor vegetation using C-band radar data at a subdaily time step. To this end, radar measurements using tower-mounted antennas with a 15-min time step, along with physiology-related information (sapflow and micrometric dendrometry), were acquired quasi-continuously from March 2020 to December 2021 in an olive orchard located near Marrakech, Morocco. The article focused on temporal coherence, whose clear diurnal cycle (highest at night and lowest at the end of the afternoon) had been highlighted over tropical and boreal forests in previous studies. The results showed that coherence was highly sensitive to: wind-induced movement of scatterers, since coherence was lowest when wind speed was highest in late afternoon, and vegetation activity, especially its water dynamics, since the morning coherence drop coincided with the onset of sapflow and the daily evapotranspiration cycle, as well as the good agreement between the temporal drop rate of coherence and the daily residual variation in trunk circumference (i.e., deviation from long-term trend). Finally, coherence remained high for temporal baselines of several days, showing that sentinel-1 data (when both satellites are operational) may be well suited for such studies, especially with acquisitions made during morning passes, when wind speed is low. These results open perspectives for monitoring tree crop physiology using high-revisit-time radar observations.
英文关键词	Radar Coherence Radar antennas Temperature measurement C-band Irrigation Antennas C-band olive orchard radar temporal coherence water status
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001167588900001
WOS关键词	SAP FLOW
WOS类目	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404140
推荐引用方式 GB/T 7714	Chakir, Adnane,Frison, Pierre-Louis,Villard, Ludovic,et al. Analysis of C-Band Radar Temporal Coherence Over an Irrigated Olive Orchard in a Semi-Arid Region[J],2024,17:3635-3647.
APA	Chakir, Adnane.,Frison, Pierre-Louis.,Villard, Ludovic.,Ouaadi, Nadia.,Fanise, Pascal.,...&Lionel, Jarlan.(2024).Analysis of C-Band Radar Temporal Coherence Over an Irrigated Olive Orchard in a Semi-Arid Region.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,17,3635-3647.
MLA	Chakir, Adnane,et al."Analysis of C-Band Radar Temporal Coherence Over an Irrigated Olive Orchard in a Semi-Arid Region".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 17(2024):3635-3647.