Exceptional Drought across Southeastern Australia Caused by Extreme Lack of Precipitation and Its Impacts on NDVI and SIF in 2018

Tian, F; Wu, J; Liu, L; Leng, S; Yang, J; Zhao, W; Shen, Q

Exceptional Drought across Southeastern Australia Caused by Extreme Lack of Precipitation and Its Impacts on NDVI and SIF in 2018

Tian, F

Wu, J Liu, L Leng, S Yang, J Zhao, W Shen, Q

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Publisher:: MDPI AG
Publication Type:: Journal Article
Citation:: Remote Sensing, 12 (1), pp. 54 - 54

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Field	Value	Language
dc.contributor.author	Tian, F https://orcid.org/0000-0001-7355-6550	en_US
dc.contributor.author	Wu, J	en_US
dc.contributor.author	Liu, L	en_US
dc.contributor.author	Leng, S	en_US
dc.contributor.author	Yang, J	en_US
dc.contributor.author	Zhao, W	en_US
dc.contributor.author	Shen, Q	en_US
dc.date.accessioned	2020-03-24T05:16:11Z
dc.date.available	2020-03-24T05:16:11Z
dc.identifier.citation	Remote Sensing, 12 (1), pp. 54 - 54	en_US
dc.identifier.uri	http://hdl.handle.net/10453/139500
dc.description.abstract	<jats:p>Increased drought frequency in Australia is a pressing concern for scholars. In 2018, a severe drought in eastern Australia was recorded by the Emergency Events Database (EM-DAT). To investigate the main causes and impacts of this drought across southeastern Australia, this work presents an overview of the drought mechanism and depicts its evolutionary process. The Standardized Precipitation Evapotranspiration Index (SPEI) from the Global Drought Monitor was used to identify the drought event and characterize its spatiotemporal distribution. The Normalized Difference Vegetation Index (NDVI) and the sun-induced chlorophyll fluorescence (SIF) were used to investigate the drought impacts on vegetation growth. In addition, the effects of drought response measures on Sustainable Development Goals (SDGs) were analyzed. Our results showed that the exceptional drought occurred across southeastern Australia from April to December, and it was most severe in July, owing to an extreme lack of precipitation and increase in temperature. Moreover, we identified profound and long-lasting impacts of the drought on NDVI and SIF levels, especially for cropland. Furthermore, we also found that SIF was superior to NDVI in detecting drought impacts. This study advised on how to formulate timely and effective drought-response measures and supports sustainable socioeconomic development in Australia.</jats:p>	en_US
dc.language	en	en_US
dc.publisher	MDPI AG	en_US
dc.relation.ispartof	Remote Sensing	en_US
dc.relation.isbasedon	10.3390/rs12010054	en_US
dc.title	Exceptional Drought across Southeastern Australia Caused by Extreme Lack of Precipitation and Its Impacts on NDVI and SIF in 2018	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	12	en_US
utslib.for	0203 Classical Physics	en_US
utslib.for	0406 Physical Geography and Environmental Geoscience	en_US
utslib.for	0909 Geomatic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	open_access
pubs.issue	1	en_US
pubs.publication-status	Published online	en_US
pubs.volume	12	en_US

Abstract:

Increased drought frequency in Australia is a pressing concern for scholars. In 2018, a severe drought in eastern Australia was recorded by the Emergency Events Database (EM-DAT). To investigate the main causes and impacts of this drought across southeastern Australia, this work presents an overview of the drought mechanism and depicts its evolutionary process. The Standardized Precipitation Evapotranspiration Index (SPEI) from the Global Drought Monitor was used to identify the drought event and characterize its spatiotemporal distribution. The Normalized Difference Vegetation Index (NDVI) and the sun-induced chlorophyll fluorescence (SIF) were used to investigate the drought impacts on vegetation growth. In addition, the effects of drought response measures on Sustainable Development Goals (SDGs) were analyzed. Our results showed that the exceptional drought occurred across southeastern Australia from April to December, and it was most severe in July, owing to an extreme lack of precipitation and increase in temperature. Moreover, we identified profound and long-lasting impacts of the drought on NDVI and SIF levels, especially for cropland. Furthermore, we also found that SIF was superior to NDVI in detecting drought impacts. This study advised on how to formulate timely and effective drought-response measures and supports sustainable socioeconomic development in Australia.

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http://hdl.handle.net/10453/139500