Cloud-radar observations of insects in the UK convective boundary layer
Wood, Curtis R., O'Connor, Ewan J., Hurley, Rebecca A., Reynolds, Don R. and Illingworth, Anthony J. (2009) Cloud-radar observations of insects in the UK convective boundary layer. Meteorological Applications, 16 (4). pp. 491-500. ISSN 1350-4827 (doi:10.1002/met.146)Full text not available from this repository.
Radar has been applied to the study of insect migration for almost 40 years, but most entomological radars operate at X-band (9.4 GHz, 3.2 cm wavelength) and can only detect individuals of relatively large species, such as migratory grasshoppers and noctuid moths, over all of their flight altitudes. Many insects (including economically important species) are much smaller than this, but development of the requisite higher power and/or higher frequency radar systems to detect these species is often prohibitively expensive. In this paper, attention is focused upon the uses of some recently-deployed meteorological sensing devices to investigate insect migratory flight behaviour, and especially its interactions with boundary layer processes. Records were examined from the vertically-pointing 35 GHz ‘Copernicus’and 94 GHz ‘Galileo’ cloud radars at Chilbolton (Hampshire, England) for 12 cloudless and convective occasions in summer 2003, and one of these occasions (13 July) is presented in detail. Insects were frequently found at heights above aerosol particles, which represent passive tracers, indicating active insect movement. It was found that insect flight above the convective boundary layer occurs most often during the morning. The maximum radar reflectivity (an indicator of aerial insect biomass) was found to be positively correlated with maximum screen temperature.
|Additional Information:|| Meteorological Applications was formerly published by Cambridge University Press. From 2007 published by Wiley for The Royal Meteorological Society.|
|Uncontrolled Keywords:||insect migration, CBL, radar, W-band, Ka-band, X-band, lidar|
|Subjects:||Q Science > Q Science (General)|
Q Science > QL Zoology
|School / Department / Research Groups:||Natural Resources Institute|
Natural Resources Institute > Agriculture, Health & Environment
|Last Modified:||12 Mar 2012 17:58|
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