Climate Change in Rwanda: The Observed Changes in Daily Maximum and Minimum Surface Air Temperatures during 1961-2014

doi:10.3389/feart.2021.619512

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Climate Change in Rwanda: The Observed Changes in Daily Maximum and Minimum Surface Air Temperatures during 1961-2014
	Ngarukiyimana, Jean Paul 1; Fu, Yunfei 1; Sindikubwabo, Celestin 2; Nkurunziza, Idrissa Fabien 1,3; Ogou, Faustin Katchele 2; Vuguziga, Floribert 4; Ogwang, Bob Alex 5; Yang, Yuanjian 4,6
通讯作者	Fu, Yunfei(fyf@ustc.edu.cn) ; Yang, Yuanjian(yyj1985@nuist.edu.cn)
	2021-03-23
发表期刊	FRONTIERS IN EARTH SCIENCE
卷号	9 页码:18
摘要	Rwanda has experienced high temperature rising phenomena over the last decades and hence, highly vulnerable to climate change. This paper examined the spatial and temporal variations of daily maximum and minimum surface air temperature (Tmin and Tmax) and diurnal temperature range (DTR). It studied variables at monthly, seasonal and annual time-scales from 1961 to 2014. The study applied various statistical methods such as ordinary least-square fitting, Mann-Kendall, Sen' slope and Sequential Mann-Kendall statistical test to the new reconstructed ENACTS dataset that cover the period from 1983 to 2014 while pre-1983s recorded data from 24 meteorological stations have been added to complete the lengthiness of ENACTS data. The January to February season did not show a significant trend at seasonal time-scales. The authors decided only to consider March-to-May, June-to-August and October-to-December seasons for further analyses. Topography impacts on temperature classified stations into three regions: region one (R1) (1,000-1,500 m), region two (R2) (1,500-2,000 m) and region three (R3) (>= 2,000 m). With high confidence, the results indicate a significant positive trend in both Tmin and Tmax in all three regions during the whole study period. However, the magnitude rate of temperatures change is different in three regions and it varies in seasonal and annual scale. The spatial distributions of Tmax and Tmin represent a siginificant warming trend over the whole country notably since the early 1980s. Surprisingly, Tmin increased at a faster rate than Tmax in R3 (0.27 vs. 0.07 degrees C/decade in March-to-May) and (0.29 vs. 0.04 degrees C/decade in October-to-December), resulting in a significant decrease in the DTR. This is another confirmation of warming in Rwanda. The mutation test application exhibited most of the abrupt changes in the seasonal and annual Tmax and Tmin trends between 1984 and 1990. The present work mainly focus on the spatial and temporal variability of Tmin, Tmax and DTR in Rwanda and their relationship with elevation change, leaving a gap in other potential cause factors explored in the future.
关键词	minimum temperature (Tmin) maximum temperature (Tmax) warming Rwanda climate change
DOI	10.3389/feart.2021.619512
收录类别	SCI ; SCI
语种	英语
资助项目	NSFC[91837310] ; NSFC[41675041] ; NSFC[41620104009] ; National Key R&D Program of China[2018YFC1507200] ; National Key R&D Program of China[2017YFC1501402] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0104] ; Key research and development projects in Anhui province[201904a07020099] ; CLIMATE-TPE[32070] ; State Key Laboratory of Loess and Quaternary Geology[SKLLQG2010]
WOS研究方向	Geology
项目资助者	NSFC ; National Key R&D Program of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Key research and development projects in Anhui province ; CLIMATE-TPE ; State Key Laboratory of Loess and Quaternary Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000637004600001
出版者	FRONTIERS MEDIA SA
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16256
专题	黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Fu, Yunfei; Yang, Yuanjian
作者单位	1.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Univ Rwanda, Kigali, Rwanda 4.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing, Peoples R China 5.Uganda Natl Meteorol Author, Kampala, Uganda 6.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
推荐引用方式 GB/T 7714	Ngarukiyimana, Jean Paul,Fu, Yunfei,Sindikubwabo, Celestin,et al. Climate Change in Rwanda: The Observed Changes in Daily Maximum and Minimum Surface Air Temperatures during 1961-2014[J]. FRONTIERS IN EARTH SCIENCE,2021,9:18.
APA	Ngarukiyimana, Jean Paul.,Fu, Yunfei.,Sindikubwabo, Celestin.,Nkurunziza, Idrissa Fabien.,Ogou, Faustin Katchele.,...&Yang, Yuanjian.(2021).Climate Change in Rwanda: The Observed Changes in Daily Maximum and Minimum Surface Air Temperatures during 1961-2014.FRONTIERS IN EARTH SCIENCE,9,18.
MLA	Ngarukiyimana, Jean Paul,et al."Climate Change in Rwanda: The Observed Changes in Daily Maximum and Minimum Surface Air Temperatures during 1961-2014".FRONTIERS IN EARTH SCIENCE 9(2021):18.