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INTEGRATIVE AND COMPARATIVE BIOLOGY
卷 48, 期 1, 页码 12-23出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/icb/icn021
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Organisms in the aerosphere have been detected by radar since its development in the 1940s. The national network of Doppler weather radars ( WSR-88D) in the United States can readily detect birds, bats, and insects aloft. Level-II data from the radar contain information on the reflectivity and radial velocity of targets and on width of the spectrum (SD of radial velocities in a radar pulse volume). Information on reflectivity can be used to quantify density of organisms aloft and radial velocity can be used to discriminate different types of targets based on their air speeds. Spectral width can also provide some useful information when organisms with very different air speeds are aloft. Recent work with dual-polarization radar suggests that it may be useful for discriminating birds from insects in the aerosphere, but more development and biological validation are required.
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