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Particle Size Distributions Estimated During the 2001 Multi-Frequency Radar IOP

Williams, C.R.(a) and Sekelsky, S.M.(b), University of Colorado at Boulder (a), University of Massachusetts at Amherst (b)
Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting

The 2001 Multi-Frequency Radar Intensive Operational Period (IOP) was designed to collect a long dataset of W-band (95 GHz), Ka-band (35 GHz), and S-band (2.8 GHz) vertical profiling observations to investigate insect scattering and precipitating particle scattering above the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site. The 95 and 2.8 GHz vertically pointing radars were placed next to the permanently installed 35 GHz Millimeter Wave Cloud Radar (MMCR) at the SGP Central Facility from mid-May 2001 through mid-January 2002. The University of Massachusetts at Amherst Microwave Remote Sensing Laboratory deployed the guest 95 GHz system and the National Oceanic and Atmospheric Administration (NOAA) Aeronomy Laboratory deployed the guest 2.8 GHz system. During this 8-month campaign, several different cloud types were observed simultaneously by all three radars. The different wavelength radars have different sensitivity and attenuation properties that are dependent on the particle size distributions of the clouds. This contribution will present sample particle size distributions retrieved utilizing the different sensitivity and attenuation characteristics of all three radars.

Note: This is the poster abstract presented at the meeting; an extended version was not provided by the author(s).