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APR-2 tropical cyclone observations

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dc.contributor.author Durden, S. L.
dc.contributor.author Tanelli, S.
dc.date.accessioned 2013-09-13T20:22:59Z
dc.date.available 2013-09-13T20:22:59Z
dc.date.issued 2011-09-26
dc.identifier.citation Radar Meteorology Conference, Pittsburgh, Pennsylvania, September 26-30, 2011 en_US
dc.identifier.clearanceno 11-4018
dc.identifier.uri http://hdl.handle.net/2014/43711
dc.description.abstract The Second Generation Airborne Precipitation Radar (APR-2) participated in the Genesis and Rapid Intensification Processes (GRIP) experiment in August and September of 2010, collecting a large volume of data in several tropical systems, including Hurricanes Earl and Karl. Additional measurements of tropical cyclone have been made by APR-2 in experiments prior to GRIP (namely, CAMEX-4, NAMMA, TC4); Table 1 lists all the APR-2 tropical cyclone observations. The APR-2 observations consist of the vertical structure of rain reflectivity at 13.4 and 35.6 GHz, and at both co-polarization and crosspolarization, as well as vertical Doppler measurements and crosswind measurements. APR-2 normally flies on the NASA DC-8 aircraft, as in GRIP, collecting data with a downward looking, cross-track scanning geometry. The scan limits are 25 degrees on either side of the aircraft, resulting in a roughly 10-km swath, depending on the aircraft altitude. Details of the APR-2 observation geometry and performance can be found in Sadowy et al. (2003). The multiparameter nature of the APR-2 measurements makes the collection of tropical cyclone measurements valuable for detailed studies of the processes, microphysics and dynamics of tropical cyclones, as well as weaker systems that are associated with tropical cyclone formation. In this paper, we give a brief overview of how the APR-2 data are processed. We also discuss use of the APR-2 cross-track winds to estimate various quantities of interest in in studies of storm intensification. Finally, we show examples of the standard products and derived information. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011. en_US
dc.subject radar en_US
dc.subject tropical cyclones en_US
dc.subject hurricanes en_US
dc.title APR-2 tropical cyclone observations en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Meteorology and Climatology en_US


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