Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD030085 |
The Impact of Human-Induced Climate Change on Regional Drought in the Horn of Africa | |
Marthews, T. R.1; Jones, R. G.2,3; Dadson, S. J.1,2; Otto, F. E. L.4; Mitchell, D.5; Guillod, B. P.6,7; Allen, M. R.4 | |
2019-04-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:8页码:4549-4566 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Switzerland |
英文摘要 | A severe drought hit the Greater Horn of Africa (GHA) in 2014, but it remains unclear whether this extreme event was attributable to anthropogenic climate change or part of longer-term natural cycles. Precipitation patterns are known to be changing across the GHA, but trajectories in land surface variables are much less well known. We simulated the GHA land surface environment to assess the balance between natural cycles and human-induced climate change. Using a new form of event attribution study where we focused on both climate variables and also directly simulated land surface variables, we combined publicly volunteered distributed computing with land surface simulations to quantify land surface responses. Uncertainty was quantified both for climate model and land surface model outputs. We identified two distinct "drought trajectories" in the GHA bimodal seasonality area during the March-May (Long Rains season) of 2014. Human-induced climate change may have resulted in regions from Lake Nalubaale (Lake Victoria) to Northern Kenya receiving less precipitation in this season and having up to 20% higher probability of drought-level evapotranspiration rates (increasing drought). In contrast, the simulated anthropogenic climate change signal for this season induced somewhat wetter conditions and up to 20% lower probability of drought-level evapotranspiration in Eastern Ethiopia, Southern Somalia, and coastal Kenya (decreasing drought). Uncertainties in our modeling system varied by region and variable of focus, but broadly we found that land surface simulation uncertainty neither added significantly to climate model uncertainty nor significantly reduced it. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000469071400017 |
WOS关键词 | ENVIRONMENT SIMULATOR JULES ; EAST-AFRICAN ; MODEL DESCRIPTION ; ATTRIBUTION ; SATELLITE ; EVENTS ; TRENDS ; EVAPOTRANSPIRATION ; ECOSYSTEMS ; INCREASE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182473 |
专题 | 气候变化 |
作者单位 | 1.Ctr Ecol & Hydrol, Wallingford, Oxon, England; 2.Univ Oxford, Sch Geog & Environm, Oxford, England; 3.Met Off, Hadley Ctr, Exeter, Devon, England; 4.Univ Oxford, Environm Change Inst, Oxford, England; 5.Univ Bristol, Sch Geog Sci, Bristol, Avon, England; 6.Swiss Fed Inst Technol, Inst Environm Decis, Zurich, Switzerland; 7.Swiss Fed Inst Technol, Inst Atmospher Climate Sci, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Marthews, T. R.,Jones, R. G.,Dadson, S. J.,et al. The Impact of Human-Induced Climate Change on Regional Drought in the Horn of Africa[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(8):4549-4566. |
APA | Marthews, T. R..,Jones, R. G..,Dadson, S. J..,Otto, F. E. L..,Mitchell, D..,...&Allen, M. R..(2019).The Impact of Human-Induced Climate Change on Regional Drought in the Horn of Africa.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(8),4549-4566. |
MLA | Marthews, T. R.,et al."The Impact of Human-Induced Climate Change on Regional Drought in the Horn of Africa".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.8(2019):4549-4566. |
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