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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 ...
Behavior of the Refractive Index Structure Parameter in the Entraining Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: The refractive index structure parameter CN2 has contributions from the temperature and humidity structure parameters Cr2 and CQ2 and from the joint structure parameter CTQ. We briefly review the behavior of these structure ...
An Experimental Study of Turbulence Structure in the Fair-Weather Trade Wind Boundary Layer
Publisher: American Meteorological Society
Abstract: Measurements of air velocity, temperature and humidity were made from an aircraft in the fair-weather trade wind boundary layer. On the day of the experiment, the region studied was characterized by north-south bands of ...
Structure of a Midlatitude Squall Line Formed in Strong Unidirectional Shear
Publisher: American Meteorological Society
Abstract: Data from five Doppler radars, the surface mesonet, aircraft, and rawinsondes from the Cooperative Convective Precipitation Experiment (CCOPE) are used to document the structure and evolution of a squall line with unusually ...
Estimating Watershed Evapotranspiration with PASS. Part II: Moisture Budgets during Drydown Periods
Publisher: American Meteorological Society
Abstract: The second part of the parameterization of subgrid-scale surface fluxes model (PASS2) has been developed to estimate long-term evapotranspiration rates over extended areas at a high spatial resolution by using satellite ...
Structure and Evolution of the 22 February 1993 TOGA COARE Squall Line: Numerical Simulations
Publisher: American Meteorological Society
Abstract: In this study a numerical cloud model is used to simulate the three-dimensional evolution of an oceanic tropical squall line observed during the Tropical Ocean Global Atmosphere Coupled Ocean?Atmosphere Response Experiment ...
Sensitivity of the PBL and Precipitation in 12-Day Simulations of Warm-Season Convection Using Different Land Surface Models and Soil Wetness Conditions
Publisher: American Meteorological Society
Abstract: A coupled land surface?atmospheric model that permits grid-resolved deep convection is used to examine linkages between land surface conditions, the planetary boundary layer (PBL), and precipitation during a 12-day warm-season ...
A Convective Cell in a Hurricane Rainband
Publisher: American Meteorological Society
Abstract: On 10 October 1983 the two NOAA WP-3D aircraft completed a mission designed to provide airborne Doppler radar data for a convective cell embedded in a weak rainband on the trailing side of Hurricane Raymond. Comparisons ...
The Tilt of the Leading Edge of Mesoscale Tropical Convective Lines
Publisher: American Meteorological Society
Abstract: The tilt with height of the leading edge of seven mesoscale convective lines in GATE is determined by two independent methods. When averaged over time and along the line axis, the tilt is found to he surprisingly shallow, ...
The Temperature-Humidity Covariance Budget in the Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: The behavior of the temperature-humidity covariance (?q) budget in the convectively driven boundary layer is determined through analysis of data from AMTEX and (to a lesser extent) Kansas and Minnesota. In the near-neutral ...