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Detailed Reference Information |
Farrell, W.M., Goldberg, R.A., Blakeslee, R.J., Desch, M.D. and Mach, D.M. (2006). Radiation impedance over a thunderstorm. Radio Science 41: doi: 10.1029/2004RS003217. issn: 0048-6604. |
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In the summer of 2002 the Altus Cumulus Electrification Study obtained radiated Poynting flux measurements in the near vicinity of lightning discharge events. These measurements not only allow a determination of radiated power but also allow a calculation of the radiation impedance above a thunderstorm when the thunderstorm was acting as an antenna. This impedance is significant since it defines the level of displacement currents propagating into the middle atmosphere and, as applications demonstrate, is a critical quantity in understanding the relationship between power and displacement current in the near vicinity of a thunderstorm. We find that the radiation impedance of the thunderstorm is surprisingly low in the VLF and varies inversely with frequency consistent with a capacitive-like coupling from the thunderstorm to middle atmosphere. |
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Abstract |
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Keywords
Atmospheric Processes, Atmospheric electricity, Atmospheric Processes, Lightning, Atmospheric Processes, Middle atmosphere dynamics (0341, 0342), Atmospheric Processes, Instruments and techniques |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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