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RISMesoscale and Convective–Scale Downdrafts as Distinct Components of Squall-Line Structure
Publisher: American Meteorological Society
Abstract: This paper describes the two different kinds of downdraft air frequently observed to the rear of some squall lines at low levels. The primary data source is measurements taken during aircraft penetrations of certain ...
Cumulonimbus Vertical Velocity Events in GATE. Part II: Synthesis and Model Core Structure
Publisher: American Meteorological Society
Abstract: The properties of convective drafts and cores are presented in Part I. By our definition a convective updraft must have a positive vertical velocity for 0.5 km, and exceed 0.5 m s?1 for 1 s; a convective updraft core must ...
Multi-Layered Structure of the Wind over the Equatorial Pacific During the Line Islands Experiment
Publisher: American Meteorological Society
Abstract: Analysis of serial rawinsonde observations over the Line Islands during March and April 1967 reveals a multi-layered wind structure, especially in the meridional component, which changes sign as many as eight times below ...
A Wide Rainband in a Developing Tropical Cyclone
Publisher: American Meteorological Society
Abstract: On 18 January 1987 the three aircraft from the Equatorial Mesoscale Experiment (EMEX) completed a mission designed to identify the mesoscale reflectivity, kinematic, and thermodynamic structure of a convectively active ...
VHF Wind-Profiler Data Quality and Comparison of Methods for Deducing Horizontal and Vertical Air Motions in a Mesoscale Convective Storm
Publisher: American Meteorological Society
Abstract: Very high frequency (VHF) Doppler radar measurements of the horizontal and vertical winds are used to examine three procedures to extract mean profiles of horizontal and vertical winds. These are 1) time averaging of ...
Mesoscale and Convective Structure of a Hurricane Rainband
Publisher: American Meteorological Society
Abstract: The mesoscale thermodynamic, kinematic, and radar structure of a Hurricane Floyd rainband observed on 7 September 1981 is presented. Data are from 26 aircraft passes through the rainband from 150 to 6400 m. A composite ...
Modification of the Thermodynamic Structure of the Lower Troposphere by the Evaporation of Precipitation ahead of a Cold Front
Publisher: American Meteorological Society
Abstract: The evolution of an oceanic prefrontal subcloud layer of continental origin was examined by analyzing data gathered on the subsynoptic and mesoscale during Phase III of the Australian Cold Fronts Research Program. ...
An experiment in Tropical Mesoscale Analysis: Part 1
Publisher: American Meteorological Society
Abstract: In Part 1 of the two-part paper, we present an analysis of a portion of a tropical wave in the BOMEX Phase IV ship network on a much smaller sale than normally attempted using conventional observations and data from a ...
An Experiment in Tropical Mesoscale Analysis: Part 2
Publisher: American Meteorological Society
Abstract: In Part 2 of the two-part paper, scale interaction between the large-scale wave and the BOMEX 26 July 1969 mesoscale system, is examined, primarily through the means of divergence, vertical motion, and mass flux computations. ...