DOI: 10.1002/joc.5777
Scopus记录号: 2-s2.0-85052533525
论文题名: Changes in temperature and precipitation extremes in Ethiopia, Kenya, and Tanzania
作者: Gebrechorkos S.H. ; Hülsmann S. ; Bernhofer C.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 1 起始页码: 18
结束页码: 30
语种: 英语
英文关键词: climate
; East Africa
; ETCCDI
; extremes
; precipitation
; temperature
; trend
Scopus关键词: Image resolution
; Precipitation (chemical)
; Temperature
; climate
; East Africa
; ETCCDI
; extremes
; trend
; Climate change
; climate modeling
; extreme event
; precipitation (climatology)
; spatial resolution
; spatial variation
; temperature effect
; trend analysis
; Ethiopia
; Kenya
; Tanzania
英文摘要: East Africa is one of the most vulnerable regions of Africa to extreme weather and climate events. Regional and local information on climate extremes is critical for monitoring and managing the impacts and developing sustainable adaptation measures. However, this type of information is not readily available at the necessary spatial resolution. Therefore, here we test trends and variability of temperature (1979–2010) and precipitation (1981–2016) extremes in East Africa, particularly Ethiopia, Kenya, and Tanzania, at a spatial resolution of 0.1 and 0.05°, respectively, using the indices defined by the Expert Team on Climate Change Detection and Indices (ETCCDI). We use gridded data sets with high accuracy and resolution from the Terrestrial Hydrology Research Group, University of Princeton and Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS). Trends of 19 indices are computed by fitting a linear model and using the nonparametric Mann–Kendall test and the magnitude of change is computed using the Sen's slope method. The results show an increasing trend in monthly maximum and minimum values of daily maximum and minimum temperature in large parts of the region. This is accompanied by significant increasing trends in warm nights (TN90p), warm days (TX90p), warm spell duration index (WSDI), and summer days index (SU). In addition, cold days (TX10p) and cold nights (TN10p) showed a significant decreasing trend. In general, the results show an increasing tendency in temperatures extremes, which is in line with rising global mean temperature. In addition, most of the temperature extremes observed after 2000 are warmer than the long-term mean (1979–2010). Precipitation indices, on the other hand, showed increasing and decreasing trends in Ethiopia, Kenya, and Tanzania, but no general pattern. The outcomes enable identifying hot spot areas and planning of adaptation and mitigation measures at much finer spatial scale than previously possible. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116678
Appears in Collections: 全球变化的国际研究计划
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作者单位: United Nations University Institute for Integrated Management of Material Fluxes and of Resources (UNU-FLORES), Dresden, Germany; Faculty of Environmental Sciences, Institute of Hydrology and Meteorology, Technische Universität Dresden, Dresden, Germany
Recommended Citation:
Gebrechorkos S.H.,Hülsmann S.,Bernhofer C.. Changes in temperature and precipitation extremes in Ethiopia, Kenya, and Tanzania[J]. International Journal of Climatology,2019-01-01,39(1)