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RISAn Experimental Study of the Small-Scale Variability of Rainfall
Publisher: American Meteorological Society
Abstract: mall-scale variability of rainfall has been studied employing six dual rain gauge sites at Wallops Island, Virginia. The rain gauge sites were separated between 0.4 and 5 km, matching the beamwidth of Tropical Rainfall ...
An Explanation for the Existence of Supercooled Water at the Top of Cold Clouds
Publisher: American Meteorological Society
Abstract: Aircraft measurements in many cold cloud systems have found a narrow layer of supercooled water to exist at the cloud top, even at temperatures colder than ?30°C. We show in this paper that the imbalance between the ...
An Experimental Study of Small-Scale Variability of Raindrop Size Distribution
Publisher: American Meteorological Society
Abstract: An experimental study of small-scale variability of raindrop size distributions (DSDs) has been carried out at Wallops Island, Virginia. Three Joss?Waldvogel disdrometers were operated at a distance of 0.65, 1.05, and 1.70 ...
Retrieval of Raindrop Size Distribution from Simulated Dual-Frequency Radar Measurements
Publisher: American Meteorological Society
Abstract: Observations of raindrop size distributions (DSDs) have validated the use of three-parameter distribution functions in representing the observed spectra. However, dual-frequency radar measurements are limited to retrieving ...
Evidence from Tropical Raindrop Spectra of the Origin of Rain from Stratiform versus Convective Clouds
Publisher: American Meteorological Society
Abstract: An analysis of temporal variations in gamma parameters of raindrop spectra is presented utilizing surface-based observations from the Tropical Ocean Global Atmosphere Couple Ocean-Atmosphere Experiment. An observed dramatic ...
A Field Study of Raindrop oscillations. Part I: Observation of Size Spectra and Evaluation of Oscillation Causes
Publisher: American Meteorological Society
Abstract: The size spectra of oscillating raindrops were determined from photographic measurements in Illinois showers at night. The oscillations were detected from modulations in the fall streaks produced by backscattered light ...
Uncertainties of GPM DPR Rain Estimates Caused by DSD Parameterizations
Publisher: American Meteorological Society
Abstract: framework based on measured raindrop size distribution (DSD) data has been developed to assess uncertainties in DSD models employed in Ku- and Ka-band dual-wavelength radar retrievals. In this study, the rain rates and ...
A Novel Approach to Identify Sources of Errors in IMERG for GPM Ground Validation
Publisher: American Meteorological Society
Abstract: he comparison of satellite and high-quality, ground-based estimates of precipitation is an important means to assess the confidence in satellite-based algorithms and to provide a benchmark for their continued development ...
Comparison of Drop Size Distribution Measurements by Impact and Optical Disdrometers
Publisher: American Meteorological Society
Abstract: Simultaneous observations made with optical- and impact-type disdrometers were analyzed to broaden knowledge of these instruments. These observations were designed to test how accurately they measure drop size distributions ...
Error Characteristics of Rainfall Measurements by Collocated Joss–Waldvogel Disdrometers
Publisher: American Meteorological Society
Abstract: Error characteristics of rainfall measurements were studied using six collocated Joss?Waldvogel (JW) disdrometers that are located at NASA?s Wallops Flight Facility. The six disdrometer means of rain rate R, reflectivity ...