干旱区生态环境知识资源中心(Arid): Sensitivity of surface albedo derived from METEOSAT data to drought episodes in a semi-arid region (M'Sila, north center of Algeria)

Arid

DOI	10.1007/s12517-020-06431-2
	Sensitivity of surface albedo derived from METEOSAT data to drought episodes in a semi-arid region (M'Sila, north center of Algeria)
	Nakes, Mohammed Taher; Mokhnache, Ammar
通讯作者	Nakes, MT (corresponding author), Univ Kasdi Merbah, Fac Math & Matter Sci, Dept Phys, Route Ghardaia BP 511, Ouargla 30000, Algeria.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:2
英文摘要	Drought is a natural phenomenon that affects ecological processes, land productivity, and human life. The phenomenon is slow to settle down and its impacts are not instantaneous, requiring an early monitoring of their signs of appearance. In order to track the effect drought on the land surface dynamics by means of surface albedo changes, we intend to exploit the VIS-channel reference image from the METEOSAT satellite data, which is an associated product of the new version of the Infrared Difference Dust Index (IDDI). The surface albedo is retrieved from the calibrated VIS-channel reference radiance, atmospherically corrected by the radiative transfer code 6S (Second Simulation of a Satellite Signal in the Solar Spectrum). In this study, we inspect the sensitivity of monthly surface albedo to drought events over a semi-arid region (M'Sila, center of northern Algeria) during the period covered by three METEOSAT satellites (5, 6, and 7). Two drought indices, SPI (Standardized Precipitation Index) and SPEI (Standardized Precipitation Evapotranspiration Index), were calculated at multiple timescales and were correlated with surface albedo over the study region. The results show that the correlation of surface albedo with the two drought indices at the timescale of 1 month (current month) is not necessarily the best indicator of the installation of a drought event. Additionally, we find that the sensitivity of surface albedo to drought indices at a medium timescales class (average of correlation coefficient at 6, 9, and 12 months), is more sensitive to SPEI index (principally 6-month timescale), during the growing season (April to September). It is also more sensitive to SPI index (principally 12-month timescale), during the supplying and charging period of water resources (October to March).
英文关键词	Surface albedo METEOSAT satellites Drought SPI and SPEI indices 6S code
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000612384000003
WOS关键词	STANDARDIZED PRECIPITATION INDEX ; SOIL-MOISTURE ; TIME SCALES ; VEGETATION ; CLIMATE ; SAHEL ; HODNA ; VULNERABILITY ; VARIABILITY ; CIRCULATION
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/2XILL650/349530
作者单位	[Nakes, Mohammed Taher] Univ Kasdi Merbah, Fac Math & Matter Sci, Dept Phys, Route Ghardaia BP 511, Ouargla 30000, Algeria; [Mokhnache, Ammar] Univ Constantine 1, Dept Phys, Fac Exact Sci, Route Ain El Bey, Constantine 25000, Algeria
推荐引用方式 GB/T 7714	Nakes, Mohammed Taher,Mokhnache, Ammar. Sensitivity of surface albedo derived from METEOSAT data to drought episodes in a semi-arid region (M'Sila, north center of Algeria)[J],2021,14(2).
APA	Nakes, Mohammed Taher,&Mokhnache, Ammar.(2021).Sensitivity of surface albedo derived from METEOSAT data to drought episodes in a semi-arid region (M'Sila, north center of Algeria).ARABIAN JOURNAL OF GEOSCIENCES,14(2).
MLA	Nakes, Mohammed Taher,et al."Sensitivity of surface albedo derived from METEOSAT data to drought episodes in a semi-arid region (M'Sila, north center of Algeria)".ARABIAN JOURNAL OF GEOSCIENCES 14.2(2021).