Search
Now showing items 1-10 of 89
Piecewise Potential Vorticity Inversion
Publisher: American Meteorological Society
Abstract: The treatment of the potential vorticity (PV) distribution as a composite of individual perturbations is central to the diagnostic and conceptual utility of PV. Nonlinearity in the inversion operator for Ertel's potential ...
The Modification of Baroclinic Waves by the Rocky Mountains
Publisher: American Meteorological Society
Abstract: The author diagnoses two observed cases of Rocky Mountain lee cyclogenesis and perform several idealized simulations to understand the effect of the mountains on incident baroclinic waves. Several issues are examined: 1) ...
Simulations of Subtropical Cyclones in a Baroclinic Channel Model
Publisher: American Meteorological Society
Abstract: The present study considers a variety of cyclone developments that occur in an idealized, baroclinic channel model featuring full condensation heating effects over an ocean with prescribed sea surface temperature variation. ...
The Formation of Moist Vortices and Tropical Cyclones in Idealized Simulations
Publisher: American Meteorological Society
Abstract: he upscale aggregation of convection is used to understand the emergence of rotating, coherent midtropospheric structures and the subsequent process of tropical cyclone formation. The Cloud Model, version 1 (CM1), is ...
A Potential-Vorticity Diagnosis of the importance of initial Structure and Condensational Heating in Observed Extratropical Cyclogenesis
Publisher: American Meteorological Society
Abstract: The dynamics of a cyclone development over the midwestern United States on 15 December 1987 are investigated with a focus on the relationship between cyclone structure and condensational heating. Low-level cyclogenesis is ...
Mesoscale Anticyclonic Circulations in the Lee of the Central Rocky Mountains
Publisher: American Meteorological Society
Abstract: Composite analyses of terrain-forced, mesoscale anticyclonic circulations over southern Wyoming and northern Colorado are constructed. These suggest two different types of circulations, based on upstream flow direction. ...
Summary of the 1998 Workshop on Mesoscale Model Verification
Publisher: American Meteorological Society
Abstract: The major results and discussion items presented at the 1998 Workshop on mesoscale model verification, held 18?19 June in Boulder, Colorado, are summarized. This forum represents perhaps the first attempt to bring together ...
Numerical Simulations of the Genesis of Hurricane Diana (1984). Part II: Sensitivity of Track and Intensity Prediction
Publisher: American Meteorological Society
Abstract: The authors examine numerous simulations that probe the dynamics governing the intensification and track of Tropical Cyclone Diana (1984) simulated in Part I. The development process is fundamentally dependent on a preexisting ...
Patterns of Thickness Anomaly for Explosive Cyclogenesis over the West-Central North Atlantic Ocean
Publisher: American Meteorological Society
Abstract: Hemispheric anomaly patterns of 1000?500 mb thickness were obtained for 67 cases of explosive cyclogenesis over the western North Atlantic Ocean in December-February during 1962?77, beginning between latitudes 30°?40°N and ...