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Record Details

Record 49 of 3731
APR-2 Tropical Cyclone Observations
External Online Source: hdl:2014/43711
Author and Affiliation:
Durden, S. L.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Tanelli, S.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
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.
Publication Date: Sep 26, 2011
Document ID:
20150006559
(Acquired Apr 24, 2015)
Subject Category: METEOROLOGY AND CLIMATOLOGY; EARTH RESOURCES AND REMOTE SENSING
Document Type: Conference Paper
Publication Information: (SEE 20150005987)
Meeting Information: Radar Meteorology Conference; 35th; 26-30 Sep. 2011; Pittsburgh, PA; United States
Meeting Sponsor: American Meteorological Society; Boston, MA, United States
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: TROPICAL STORMS; RADAR DATA; HIGH RESOLUTION; PRECIPITATION (METEOROLOGY); AIRBORNE RADAR; REFLECTANCE; CYCLONES
Other Descriptors: RADAR; TROPICAL CYCLONES; HURRICANES
Availability Source: Other Sources
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