globalchange  > 气候减缓与适应
DOI: 10.1002/joc.5234
论文题名:
Trends of intraseasonal descriptors of wet and dry spells over equatorial eastern africa
作者: Gitau W.; Camberlin P.; Ogallo L.; Bosire E.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期:3
起始页码: 1189
结束页码: 1200
语种: 英语
英文关键词: Climate change ; Eastern Africa ; Intraseasonal ; Trends ; Wet and dry spells
Scopus关键词: Climate change ; Drought ; Probability distributions ; Binomial probability distribution ; Daily rainfall ; Eastern Africa ; Intra-seasonal ; Long term change ; Regional levels ; Trends ; Wet and dry ; Rain ; climate change ; dry season ; precipitation intensity ; seasonal variation ; trend analysis ; wet season ; East Africa
英文摘要: Many African countries whose economies are largely based on weather/climate sensitive sectors are vulnerable to long-term changes in weather and climate. This study is aimed at assessing whether the recent decades have observed any significant trend in the intraseasonal descriptors (ISDs) of wet and dry spells at local and sub-regional levels at seasonal and monthly timescales over equatorial eastern Africa (EEA). Daily rainfall observations over 36 stations and spanning a period of 51 years (1962–2012) were used. The study has expanded on previous results that showed contrasting trends on seasonal totals between the two rainfall seasons by demonstrating that this also affects the ISDs. At the local level, it was observed that during the long rainfall season, a given ISD would have a significant trend over several neighbouring locations, which was not the case during the short rainfall season. Secondly, for the short rainfall season, a given location would have significant trend in several ISDs. Finally, when a given ISD had a significant trend at seasonal timescale during the long rainfall season, the same ISD would have significant trends in the second and third months of the season and rarely in the first month. Such a feature was not observed for the short rainfall season. Binomial probability distribution assessment confirmed that the significant trends in the various ISDs during the long rainfall season did not occur by mere chance. © 2017 Royal Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117140
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作者单位: Department of Meteorology, University of Nairobi, Kenya; Centre de Recherches de Climatologie (CRC), Biogéosciences, University of Bourgogne Franche-Comté, Dijon, France; IGAD Climate Prediction and Applications Centre (ICPAC), Nairobi, Kenya

Recommended Citation:
Gitau W.,Camberlin P.,Ogallo L.,et al. Trends of intraseasonal descriptors of wet and dry spells over equatorial eastern africa[J]. International Journal of Climatology,2018-01-01,38(3)
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