Occurrence frequencies and regional variations in Visible Infrared Imaging Radiometer Suite (VIIRS) global active fires

doi:10.1111/gcb.15034

	Occurrence frequencies and regional variations in Visible Infrared Imaging Radiometer Suite (VIIRS) global active fires
	Li, Peng 1,4,5; Xiao, Chiwei 1,2,4,5; Feng, Zhiming 1,3,5; Li, Wenjun 1,5; Zhang, Xianzhou 1,5
刊名	GLOBAL CHANGE BIOLOGY
	2020-05-01
卷号	26 期号:5 页码:2970-2987
关键词	active fires occurrence frequency spatio-temporal characteristics tropical region Visible Infrared Imaging Radiometer Suite (VIIRS)
ISSN号	1354-1013
DOI	10.1111/gcb.15034
通讯作者	Xiao, Chiwei(xiaocw@igsnrr.ac.cn) ; Feng, Zhiming(fengzm@igsnrr.ac.cn)
英文摘要	Active fires are considered to be the key contributor to, and critical consequence of, climate change. Quantifying the occurrence frequency and regional variations in global active fires is significant for assessing carbon cycling, atmospheric chemistry, and postfire ecological effects. Multiscale variations in fire occurrence frequencies have still never been fully investigated despite free access to global active fire products. We analyzed the occurrence frequencies of Visible Infrared Imaging Radiometer Suite (VIIRS) active fires at national, pan-regional (tropics and extratropics) to global scales and at hourly, monthly, and annual scales during 2012-2017. The results revealed that the accumulated occurrence frequencies of VIIRS global active fires were up to 12,193 x 10(4), yet exhibiting slight fluctuations annually and with respect to the 2014-2016 El Nino event, especially during 2015. About 35.52% of VIIRS active fires occurred from July to September, particularly in August (13.06%), and typically between 10:00 and 13:00 Greenwich Mean Time (GMT; 42.96%) and especially at 11:00 GMT (17.65%). The total counts conform to a bimodal pattern with peaks in 5 degrees-11 degrees N (18.01%) and 5 degrees-18 degrees S (32.46%), respectively, alongside a unimodal distribution in terms of longitudes between 15 degrees E and 30 degrees E (32.34%). Tropical annual average of active fire (1,496.81 x 10(4)) accounted for 75.83%. Nearly 30% were counted in Brazil, the Democratic Republic of the Congo, Indonesia, and Mainland Southeast Asia (MSEA). Fires typically occurred between June (or August) and October (or November) with far below-average rainfall in these countries, while those in MSEA primarily occurred between February and April during the dry season. They were primarily observed between 00:00 and 02:00 GMT, between 12:00 and 14:00 within each Zone Time. We believed that VIIRS global active fires products are useful for developing fire detection algorithms, discriminating occurrence types and ignition causes via correlation analyses with physical geographic elements, and assessment of their potential impacts.
WOS关键词	SOUTHEAST-ASIA ; CLIMATE-CHANGE ; SWIDDEN AGRICULTURE ; HIGH-RESOLUTION ; FOREST-FIRES ; AIR-QUALITY ; AREA ; BORNEO ; DEFORESTATION ; WILDFIRE
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000526102300020
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133961]
专题	中国科学院地理科学与资源研究所
通讯作者	Xiao, Chiwei; Feng, Zhiming
作者单位	1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 2.Jiangxi Normal Univ, Key Lab Poyang Lake Wetland & Watershed Res, Minist Educ, Nanchang, Jiangxi, Peoples R China 3.Minist Land & Resources, Key Lab Carrying Capac Assessment Resource & Envi, Beijing, Peoples R China 4.Laos China Joint Res Ctr Resources & Environm, Viangchan, Laos 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Peng,Xiao, Chiwei,Feng, Zhiming,et al. Occurrence frequencies and regional variations in Visible Infrared Imaging Radiometer Suite (VIIRS) global active fires[J]. GLOBAL CHANGE BIOLOGY,2020,26(5):2970-2987.
APA	Li, Peng,Xiao, Chiwei,Feng, Zhiming,Li, Wenjun,&Zhang, Xianzhou.(2020).Occurrence frequencies and regional variations in Visible Infrared Imaging Radiometer Suite (VIIRS) global active fires.GLOBAL CHANGE BIOLOGY,26(5),2970-2987.
MLA	Li, Peng,et al."Occurrence frequencies and regional variations in Visible Infrared Imaging Radiometer Suite (VIIRS) global active fires".GLOBAL CHANGE BIOLOGY 26.5(2020):2970-2987.