RAIN GAUGE CONCEPT USING S-BAND AND W-BAND FOR ESTIMATION OF MODERATE TO HEAVY PRECIPITATION

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" RAIN GAUGE CONCEPT USING S-BAND AND W-BAND FOR ESTIMATION OF MODERATE TO HEAVY PRECIPITATION "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151937
Doc. No	:	ET23729
Main Entry	:	Leyda Lenل‍
Title Proper	:	RAIN GAUGE CONCEPT USING S-BAND AND W-BAND FOR ESTIMATION OF MODERATE TO HEAVY PRECIPITATION
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	In this research, two Doppler radars working at W-band (95GHz) and at S-band(2.8GHz) together with radiosonde observations (RaOb) were used to retrieve physicalparameters such as rainfall rate and vertical air motion (Wt) in rain. These instrumentswere deployed at the U.S. Department of Energy Atmospheric Radiation Measurement(DOE ARM) Cloud and Radiation Testbed (CART) site in Lamont, Oklahoma where raindata was collected on November 8, 2001 at hour 21:00:17 UTC. In order to retrieve theseparameters, the data was processed and analyzed following an iterative method similar tothat proposed by Firda [Firda et al., 1999, Firda 1997], but using the Marshall-Palmerdrop size distribution and a lower non-attenuating frequency, to consider higher rainfallrates. This iterative method includes the use of Liebeبs model for suspended waterdroplets, Mie scattering theory, Greenبs raindrops shape model and the ideal gas model.Rainfall rates were found to go from 0 mm/hr to 69.9 mm/hr. Vertical air motion wasretrieved and values described updraft up to 2.5 m/s and downdrafts up to -1.2 m/s..............-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL46986.pdf
Title and statement of responsibility and	:	RAIN GAUGE CONCEPT USING S-BAND AND W-BAND FOR ESTIMATION OF MODERATE TO HEAVY PRECIPITATION [Thesis]