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Aircraft Measurements on Microburst Development from Hydrometeor Evaporation
Publisher: American Meteorological Society
Abstract: During the Joint Airport Weather Studies (JAWS) project in 1982, the University of Wyoming's King Air research aircraft made observations of raindrop size distributions, vertical and horizontal air motions, and the temperature ...
Aircraft Measurement of Mesoscale Pressure Gradients and Ageostrophic Winds
Publisher: American Meteorological Society
Abstract: Determination of the horizontal pressure gradient force over distance scales less than 100 km is possible using airborne altimetry and detailed maps of the underlying terrain. To detect the very small isobaric slopes, ...
Mesoscale Convergence Zone Development in Northeastern Colorado under Southwest Flow
Publisher: American Meteorological Society
Abstract: In July 1987 during the CINDE project, three similar mesoscale planetary boundary layer convergence zones were observed to form in northeastern Colorado near Denver under synoptic-scale southwesterly flow. A number of ...
A New Airborne Thermometer for Atmospheric and Cloud Physics Research. Part I: Design and Preliminary Flight Tests
Publisher: American Meteorological Society
Abstract: A new airborne thermometer has been designed using results from numerical simulators of airflow and particle (drop) trajectories. Initial flight tests with the NCAR King Air show that the new thermometer, which uses a ...
Physical Response of Convective Clouds over the Sierra Nevada to Seeding with Dry Ice
Publisher: American Meteorological Society
Abstract: The effect of seeding convective clouds with dry ice was studied using simultaneous aircraft and radar observations. Clouds that were initially ice-free with supercooled liquid water contents of 0.5 g m?3 when the tops ...
Ground-Based FSSP and PVM Measurements of Liquid Water Content
Publisher: American Meteorological Society
Abstract: Recently published ground-based measurements of liquid water content (LWC) measured in fogs by two microphysical instruments, the FSSP-100 and PVM-100, are evaluated. These publications had suggested that the PVM-100 ...
Use of Distance-measuring Equipment (DME) for Correcting Errors in Position, Velocity, and Wind Measurements from Aircraft Inertial Navigation Systems
Publisher: American Meteorological Society
Abstract: Aircraft distance-measuring-equipment (DME) data are used to update position, velocity, and wind measurements from inertial navigation systems (INS) measurements. Data from conventional single-channel DME sets, suitably ...
Relative Dispersion of Ice Crystals in Seeded Cumuli
Publisher: American Meteorological Society
Abstract: Relative dispersion of ice crystals was measured in 30 seeded cumulus clouds. A quasi-instantaneous, vertical area source of ice was generated by releasing dry-ice pellets from an airplane. The ice concentration distribution ...
A Case Study of the Summertime Great Plains Low Level Jet
Publisher: American Meteorological Society
Abstract: A case study of the kinematical and dynamical evolution of the summertime Great Plains low level jet (LLJ) is presented. Airborne radar altimetry was used to discern the x and y components of the geostrophic wind at three ...