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RISPerformance of the ECMWF Operational Analyses over the Tropical Indian Ocean
Publisher: American Meteorological Society
Abstract: The quality of the ECMWF operational analyses is evaluated against independent upper-air sounding data collected during the Joint Air?Sea Monsoon Interaction Experiment (JASMINE; April?May 1999) and the Indian Ocean ...
Climatology of Vertical Wind Shear over the Tropical Atlantic
Publisher: American Meteorological Society
Abstract: The spatiotemporal variability of the 200?850-hPa vertical wind shear over the tropical Atlantic is examined for a period of 46 yr. This work extends and updates past studies by considering a longer data record as well as ...
Evolution of Mixed Rossby–Gravity Waves in Idealized MJO Environments
Publisher: American Meteorological Society
Abstract: A linear shallow water model is used to simulate the evolution of mixed Rossby?gravity (MRG) waves in background states representative of the convective phase of the Madden?Julian oscillation (MJO). Initial MRG wave ...
Evolution of Mesoscale Precipitation Band Environments within the Comma Head of Northeast U.S. Cyclones
Publisher: American Meteorological Society
Abstract: This paper explores the mesoscale forcing and stability evolution of intense precipitation bands in the comma head sector of extratropical cyclones using the 32-km North American Regional Reanalysis, hourly 20-km Rapid ...
Precipitation Distribution Associated with Landfalling Tropical Cyclones over the Eastern United States
Publisher: American Meteorological Society
Abstract: Tropical cyclones (TCs) making landfall over the United States are examined by separating those associated with precipitation predominantly left of their tracks from those with the same to the right of their tracks. ...
Analysis of Convection and Its Association with African Easterly Waves
Publisher: American Meteorological Society
Abstract: The association between convection and African easterly wave (AEW) activity over tropical Africa and the tropical Atlantic during the boreal summer is examined using satellite brightness temperature (TB) and ECMWF reanalysis ...
Convectively Coupled Kelvin Waves over Tropical Africa during the Boreal Summer: Structure and Variability
Publisher: American Meteorological Society
Abstract: The structure and variability of convectively coupled Kelvin waves during the boreal summer are explored using satellite-observed brightness temperature data and ECMWF reanalyses. Kelvin wave activity is most prominent ...
The Structure and Evolution of Hurricane Elena (1985). Part II: Convective Asymmetries and Evidence for Vortex Rossby Waves
Publisher: American Meteorological Society
Abstract: A portable data recorder attached to the Weather Surveillance Radar-1957 (WSR-57) in Apalachicola, Florida, collected 313 radar scans of the reflectivity structure within 150 km of the center of Hurricane Elena (in 1985) ...
The Mesoscale Characteristics of Tropical Oceanic Precipitation during Kelvin and Mixed Rossby–Gravity Wave Events
Publisher: American Meteorological Society
Abstract: Precipitation structures within Kelvin and mixed Rossby?gravity (MRG) wave troughs near Kwajalein Atoll during the 1999?2003 rainy seasons are analyzed using three-dimensional ground-based radar data and upper-air sounding ...
Influence of Large-Scale Flow Regimes on Cool-Season Precipitation in the Northeastern United States
Publisher: American Meteorological Society
Abstract: The influence of large-scale flow regimes on cool-season (November?April) northeastern U.S. (Northeast) precipitation is investigated for the period 1948?2003 from statistical and synoptic perspectives. These perspectives ...