Search
CSV
RISTropical–Extratropical Interactions Associated with an Atlantic Tropical Plume and Subtropical Jet Streak
Publisher: American Meteorological Society
Abstract: Tropical plumes (TPs) are elongated bands of upper- and midlevel clouds stretching from the Tropics poleward and eastward into the subtropics, typically accompanied by a subtropical jet (STJ) streak and a trough on their ...
A Simple Identification Scheme for Upper-Level Troughs and Its Application to Winter Precipitation Variability in Northwest Africa
Publisher: American Meteorological Society
Abstract: A simple algorithm for the identification of upper-level trough axes is introduced. In contrast to the assumption of a basically circular geometry in many comparable routines found in the literature, the presented ...
Tropical–Extratropical Interactions Causing Precipitation in Northwest Africa: Statistical Analysis and Seasonal Variations
Publisher: American Meteorological Society
Abstract: In several case studies, tropical?extratropical interactions (TEIs) have been shown to contribute to the transition-season precipitation in subtropical northwest Africa. Such TEI situations are characterized by a moisture ...
A Lagrangian Climatology of Tropical Moisture Exports to the Northern Hemispheric Extratropics
Publisher: American Meteorological Society
Abstract: Case studies have shown that heavy precipitation events and rapid cyclogenesis in the extratropics can be fueled by moist and warm tropical air masses. Often the tropical moisture export (TME) occurs through a longitudinally ...
Dynamics and Predictability of a Heavy Dry-Season Precipitation Event over West Africa—Sensitivity Experiments with a Global Model
Publisher: American Meteorological Society
Abstract: In January 2002 the Cape Verde region in tropical West Africa was hit by an exceptionally heavy precipitation event. Rain rates of up to 116 mm (48 h)?1 caused harmful impacts on the local population. The rainfall was ...
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 ...
A Pacific Moisture Conveyor Belt and Its Relationship to a Significant Precipitation Event in the Semiarid Southwestern United States
Publisher: American Meteorological Society
Abstract: In this study the term moisture conveyor belt (MCB) is defined as an elongated band of enhanced poleward water vapor fluxes (WVFs) above the PBL that is rooted in the Tropics. This new terminology is illustrated through ...
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 ...
A Global Climatology of Tropical Moisture Exports
Publisher: American Meteorological Society
Abstract: n a recent paper, a climatology of tropical moisture exports (TMEs) to the Northern Hemisphere (NH) was constructed on the basis of 7-day forward trajectories, started daily from the tropical lower troposphere, which were ...