气候变化领域集成服务门户(CCPortal): Recent intensification of the seasonal rainfall cycle in equatorial Africa revealed by farmer perceptions; satellite-based estimates; and ground-based station measurements

CCPortal

DOI	10.1007/s10584-019-02370-4
	Recent intensification of the seasonal rainfall cycle in equatorial Africa revealed by farmer perceptions; satellite-based estimates; and ground-based station measurements
	Salerno J.; Diem J.E.; Konecky B.L.; Hartter J.
发表日期	2019
ISSN	0165-0009
起始页码	123
结束页码	139
卷号	153 期号:2020-01-02
英文摘要	Smallholder farmers and livestock keepers in sub-Saharan Africa are on the frontlines of climate variability and change. Yet, in many regions, a paucity of weather and climate data has prevented rigorous assessment of recent climate trends and their causes, thereby limiting the effectiveness of forecasts and other services for climate adaptation. In rainfed systems, farmer perceptions of changing rainfall and weather patterns are important precursors for annual cropping decisions. Here, we propose that combining such farmer perceptions of trends in seasonal rainfall with satellite-based rainfall estimates and climate station data can reduce uncertainties regarding regional climatic trends. In western Uganda, a rural and climatically complex transition zone between eastern and central equatorial Africa, data from 980 smallholder households suggest distinct changes in seasonal bimodal rainfall over recent decades, specifically wetter rainy seasons and drier dry seasons. Data from three satellite-based rainfall products beginning in 1983 largely corroborate respondent perceptions over the last 10–20 years, particularly in the southernmost sites near Queen Elizabeth National Park. In addition, combining all three information sources suggests an increasing trend in annual rainfall, most prominently in the north near Murchison Falls National Park over the past two decades; this runs counter to recent research asserting the presence of a drying trend in the region. Our study is unique in evaluating and cross-validating these multiple data sources to identify climatic change affecting people in a poorly understood region, while providing insights into regional-scale climate controls. © 2019, Springer Nature B.V.
语种	英语
scopus关键词	Agriculture; Rain; Satellites; Soil moisture; Uncertainty analysis; Climate variability and change; Complex transitions; Ground-based stations; Information sources; Multiple data sources; Rainfall estimates; Smallholder farmers; Sub-saharan africa; Climate change; climate change; farmers knowledge; livestock farming; precipitation intensity; satellite altimetry; seasonality; smallholder; transition zone; trend analysis; Murchison Falls National Park; Queen Elizabeth National Park; Uganda
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147524
作者单位	Department of Human Dimensions of Natural Resources, Colorado State University, 1480 Campus Delivery, Fort Collins, CO 80523, United States; Department of Geosciences, Georgia State University, 24 Peachtree Center Avenue, Atlanta, GA 30303, United States; Department of Earth and Planetary Sciences, Washington University Campus, Box 1169, One Brookings Drive, St. Louis, MO 63130-4899, United States; Environmental Studies Program, University of Colorado Boulder, 4001 Discovery Drive, Boulder, CO 80303, United States
推荐引用方式 GB/T 7714	Salerno J.,Diem J.E.,Konecky B.L.,et al. Recent intensification of the seasonal rainfall cycle in equatorial Africa revealed by farmer perceptions; satellite-based estimates; and ground-based station measurements[J],2019,153(2020-01-02).
APA	Salerno J.,Diem J.E.,Konecky B.L.,&Hartter J..(2019).Recent intensification of the seasonal rainfall cycle in equatorial Africa revealed by farmer perceptions; satellite-based estimates; and ground-based station measurements.Climatic Change,153(2020-01-02).
MLA	Salerno J.,et al."Recent intensification of the seasonal rainfall cycle in equatorial Africa revealed by farmer perceptions; satellite-based estimates; and ground-based station measurements".Climatic Change 153.2020-01-02(2019).