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RISRevised Rainfall Series for the West African Subtropics
Publisher: American Meteorological Society
Abstract: This note presents normalized annual rainfall departure series from the beginning of the century to 1975 for three regions in the semi-arid add West African subtropics. Considered are three basically latitudinal zone, ...
The Spatial Coherence of African Rainfall Anomalies: Interhemispheric Teleconnections
Publisher: American Meteorological Society
Abstract: The spatial patterns of rainfall variability over the African continent are examined using a regionally averaged data set comprising the records of 1087 stations. Typical rainfall departure patterns, or anomaly types, are ...
Rainfall and Atmospheric Circulation during Drought Periods and Wetter Years in West Africa
Publisher: American Meteorological Society
Abstract: The semiarid regions of Africa experienced a number of extreme rainfall fluctuations in the present century, most notable of which are the ?wet? 1950's and the drought 1968?75. Thirty-seven century-long regional rainfall ...
The Nature of Rainfall Fluctuations in Subtropical West Africa
Publisher: American Meteorological Society
Abstract: The nature of rainfall fluctuations in the West African subtropics is described on the basis of three analyses of rainfall departures. Areally averaged. normalized rainfall departure series for the years 1901?75 are derived ...
Sub-Saharan Rainfall in the Years 1976–80: Evidence of Continued Drought
Publisher: American Meteorological Society
Abstract: This paper presents an analysis of sub-Saharan rainfall for the years 1976?80. Rainfall is represented by a standardized annual departure calculated as the ratio of the annual departure to the standard departure. The ...
The Predictability of Rainfall over the Greater Horn of Africa. Part II: Prediction of Monthly Rainfall during the Long Rains
Publisher: American Meteorological Society
Abstract: easonal prediction of the boreal spring rains in the Greater Horn of Africa has been notoriously challenging. Predictability is markedly lower than during the autumnal rainy season. Part I of this article explored ...
The Predictability of Rainfall over the Greater Horn of Africa. Part I: Prediction of Seasonal Rainfall
Publisher: American Meteorological Society
Abstract: he predictability of each of the three rainy seasons affecting the Horn of Africa is examined using multiple linear regression and cross validation. In contrast to most other empirical forecast models, atmospheric dynamics ...
An Overview of African Rainfall Fluctuations of the Last Decade
Publisher: American Meteorological Society
Abstract: This note provides an update of previously published African rainfall series. Five sub-Saharan regions of West Africa, eastern Africa, and the northern and southern Kalahari are considered. Decadal anomalies for the entire ...
The ITCZ and the Seasonal Cycle over Equatorial Africa
Publisher: American Meteorological Society
Abstract: AbstractThe common explanation for the progression of the rainy season over Africa is the seasonal excursion of the ITCZ. The ITCZ paradigm stems from a time when tropical rainfall was assumed to be associated mainly with ...