DOI: 10.1007/s00382-014-2436-6
Scopus记录号: 2-s2.0-84943818163
论文题名: Anomalously wet and dry rainy seasons in Equatorial East Africa and associated differences in intra-seasonal characteristics
作者: Philippon N. ; Camberlin P. ; Moron V. ; Boyard-Micheau J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-07-08 起始页码: 1819
结束页码: 1840
语种: 英语
英文关键词: Equatorial East Africa
; Intra-seasonal variability
; Long Rains
; Short Rains
; Wet spells
英文摘要: Differences between anomalously wet and dry rainy seasons over the period 1961–2001 in Equatorial East Africa (Kenya, northern Tanzania) are studied at local scale using a 53 rain-gauge network and analysing six intra-seasonal characteristics (ISCs): the onset and end dates, the wet spells number and length, daily mean rainfall amount and the dry spells length. As compared to anomalously dry Long Rains, anomalously wet ones record earlier onsets, more wet spells with higher daily mean rainfall amounts (above 14 mm/day). For the Short Rains, the end date is also widely modulated across the rain gauge network, and daily mean rainfall amounts above (below) 10 mm/day are more (less) frequent during anomalously wet (dry) seasons. The differences in the number, length and daily mean rainfall amount of wet spells between anomalously wet and anomalously dry rainy seasons is also analysed in an ensemble of 24 sea surface temperature-forced runs of the ECHAM4.5 Atmospheric General Circulation Model. For the Long Rains, results are inconsistent between runs which suggests a lack of reproducibility of the ISCs in the model. For the Short Rains, the ISCs distributions between anomalously wet and anomalously dry years are significantly different in most of the runs/locations. In particular, daily mean rainfall amounts above 8 mm/day are more (less) frequent in the model during anomalously wet (dry) years. © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53976
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Centre de Recherches de Climatologie, UMR Biogéosciences 6282 CNRS, Université de Bourgogne, Dijon, France; CEREGE UM 34 CNRS, Aix-Marseille University, Aix en Provence, France; IRI, Columbia University, Palisades, NY, United States
Recommended Citation:
Philippon N.,Camberlin P.,Moron V.,et al. Anomalously wet and dry rainy seasons in Equatorial East Africa and associated differences in intra-seasonal characteristics[J]. Climate Dynamics,2015-01-01,45(2017-07-08)