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Subsynoptic-Scale Vertical Wind Revealed by Dual Doppler-Radar and VAD Analysis
Publisher: American Meteorological Society
Abstract: The VAD technique is applied to unevenly spaced data obtained with two nearby Doppler weather radars in the optically clear atmosphere. Assuming that the power of higher order harmonies can be neglected, a least-squares ...
Enhancement of Cumulus Clouds over Deforested Lands in Amazonia
Publisher: American Meteorological Society
Abstract: A survey of shallow (fair weather) cumulus clouds over part of Amazonia yields evidence of enhanced frequency where the forest had been cleared. The survey covers one dry-season month from 1988. It employs a threshold ...
Probing a Nonprecipitating Cold Front with Doppler Weather Radar
Publisher: American Meteorological Society
Abstract: The utility of Doppler radar to study boundary-layer kinematics of a weak nonprecipitating cold front in Oklahoma on 16 October 1987 was examined with measurements from two radars. Diagnosis was impeded by operation at low ...
Estimation of Divergence in the Prestorm Boundary Layer
Publisher: American Meteorological Society
Abstract: An analysis technique to derive wind field parameters from single-Doppler velocity measurements, known as Modified Velocity-Volume Processing (MVVP) is examined from both theoretical and operational perspectives. For this ...
Considerations in Estimating Horizontal Wind Gradients from an Individual Doppler Radar or a Network of Wind Profilers
Publisher: American Meteorological Society
Abstract: Applications of Doppler weather radar data to the analysis of wind fields are reviewed. Radial velocity measurements from a single radar are used to estimate horizontal wind vectors within small azimuthal sectors using two ...
An Efficient, General-Purpose Technique for Identifying Storm Cells in Geospatial Images
Publisher: American Meteorological Society
Abstract: Existing techniques for identifying, associating, and tracking storms rely on heuristics and are not transferrable between different types of geospatial images. Yet, with the multitude of remote sensing instruments and the ...
Meteorological and Astronomical Influences on Radar Reflectivity in the Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: Observations are presented of time-varying radar reflectivity during a partial solar eclipse in Oklahoma. The measurements from a radar of 10-cm wavelength, were obtained in the clear-air boundary layer. The reflectivity ...
Estimating Soil Wetness from the GOES Sounder
Publisher: American Meteorological Society
Abstract: In this note, the relationship between the observed daytime rise in surface radiative temperature, derived from the Geostationary Operational Environmental Satellites (GOES) sounder clear-sky data, and modeled soil moisture ...
Evidence of an Agricultural Heat Island in the Lower Mississippi River Floodplain
Publisher: American Meteorological Society
Abstract: The Mississippi River floodplain in the states of Arkansas, Tennessee, Mississippi, and Louisiana presents a readily discernible feature in weather satellite images. This floodplain appears in the spring and early summer ...
Evolution of GLM-Observed Total Lightning in Hurricane Maria (2017) during the Period of Maximum Intensity
Publisher: American Meteorological Society
Abstract: AbstractTotal lightning data obtained from the Geostationary Lightning Mapper (GLM) were analyzed to present a first glimpse of relationships with intensity variations and convective evolution in Hurricane Maria (2017). ...