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Dry-Season Precipitation in Tropical West Africa and Its Relation to Forcing from the Extratropics
Publisher: American Meteorological Society
Abstract: Precipitation is a major socioeconomic factor in the Guineo-Soudanian zone of tropical West Africa with its distinct summer rainy season from May to October. Albeit rare, precipitation during the dry season can have ...
Prediction of Dry-Season Precipitation in Tropical West Africa and Its Relation to Forcing from the Extratropics
Publisher: American Meteorological Society
Abstract: Precipitation during the boreal winter dry season in tropical West Africa is rare but occasionally results in significant impacts on the local population. The dynamics and predictability of this phenomenon have been studied ...
Formation and Maintenance of Nocturnal Low-Level Stratus over the Southern West African Monsoon Region during AMMA 2006
Publisher: American Meteorological Society
Abstract: he southern parts of West Africa are frequently covered by an extensive deck of shallow, low (200?400 m AGL) stratus or stratocumulus clouds during the summer monsoon. These clouds usually form at night in association with ...
Tropical Cyclone Environments over the Northeastern and Northwestern Pacific Based on ERA-15 Analyses
Publisher: American Meteorological Society
Abstract: This study uses a 1° ? 1° lat?long dataset, extracted from ECMWF reanalyses for the 15-yr period 1979?93 (ERA-15), to composite environmental characteristics and flow features in the vicinity of named tropical cyclones ...
Nocturnal Continental Low-Level Stratus over Tropical West Africa: Observations and Possible Mechanisms Controlling Its Onset
Publisher: American Meteorological Society
Abstract: ome spatiotemporal characteristics and possible mechanisms controlling the onset of the widespread, low-level nocturnal stratiform clouds that formed during May?October 2006 over southern tropical West Africa are investigated ...
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Publisher: American Meteorological Society
Abstract: Hydrostatic tendency equations of pressure and geopotential have been used in various forms since the beginning of the twentieth century. In contrast to classical mass flux divergence formulations, all forms that involve ...
An Objective Detection Method for Convective Cold Pool Events and Its Application to Northern Africa
Publisher: American Meteorological Society
Abstract: onvective cold pool events in (semi) arid areas have significant impacts on their environment. They reach horizontal extents of up to several hundred kilometers and the associated turbulence and shear can cause dust emissions ...
Use of a Rain Gauge Network to Infer the Influence of Environmental Factors on the Propagation of Quasi-Linear Convective Systems in West Africa
Publisher: American Meteorological Society
Abstract: The West African squall line is a key quasi-linear storm system that brings much of the precipitation observed in the data-poor Sudanian climate zone. Squall lines propagate at a wide range of speeds and headings, but the ...
A Systematic Comparison of Tropical Waves over Northern Africa. Part II: Dynamics and Thermodynamics
Publisher: American Meteorological Society
Abstract: AbstractThis study presents the first systematic comparison of the dynamics and thermodynamics associated with all major tropical wave types causing rainfall modulation over northern tropical Africa: the Madden?Julian ...
Predictability of Rainfall over Equatorial East Africa in the ECMWF Ensemble Reforecasts on Short- to Medium-Range Time Scales
Publisher: American Meteorological Society