The Carnegie Curve

  title={The Carnegie Curve},
  author={R. Giles Harrison},
  journal={Surveys in Geophysics},
  • R. Harrison
  • Published 1 March 2013
  • Environmental Science
  • Surveys in Geophysics
The Earth’s fair weather atmospheric electric field shows, in clean air, an average daily variation which follows universal time, globally independent of the measurement position. This single diurnal cycle variation (maximum around 19UT and minimum around 03UT) is widely known as the Carnegie curve, after the geophysical survey vessel of the Carnegie Institution of Washington on which the original measurement campaigns demonstrating the universal time variation were undertaken. The Carnegie… 

Behind the curve: a comparison of historical sources for the Carnegie curve of the global atmospheric electric circuit

  • R. Harrison
  • Environmental Science
    History of Geo- and Space Sciences
  • 2020
Abstract. The “Carnegie curve” describes the diurnal variation of the global atmospheric electric circuit. It was originally found from atmospheric electric potential gradient (PG) measurements made

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This work analyzes different current source and conductivity parameterizations and their influence on the diurnal variation of the global electric circuit (GEC). The diurnal variations of the current

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Two years ago the author read before this section a paper giving the results of an analysis based upon all the diurnal-variation observations for potential gradient, conforming to an adopted

Diurnal Variations of Global Thunderstorms and Electrified Shower Clouds and Their Contribution to the Global Electrical Circuit

The long-standing mainstay of support for C. T. R. Wilson’s global circuit hypothesis is the similarity between the diurnal variation of thunderstorm days in universal time and the Carnegie curve of

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Investigation into the problems of atmospheric electricity may be divided into two periods. The first period was devoted almost entirely to measurements of the normal potential gradient in the lower

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[1] We have combined analyses of high-altitude aircraft observations of electrified clouds with diurnal lightning statistics from the Lightning Imaging Sensor (LIS) and Optical Transient Detector

Atmospheric Electricity

The density of the ionosphere appears to follow the sunspot cycle of 11 years, and it is expected that the radio-engineer will find substantial differences in the wireless wave-lengths best suited for long-distance communication.

The global atmospheric electric circuit , solar activity and climate change

The study of the global atmospheric electric circuit has advanced dramatically in the past 50 years. Large advances have been made in the areas of lightning and thunderstorm research, as related to

Air–earth current measurements at Kew, London, 1909–1979

Measurements of Atmospheric Electricity Aloft

  • K. Nicoll
  • Environmental Science, Physics
    Surveys in Geophysics
  • 2012
Measurements of the electrical characteristics of the atmosphere above the surface have been made for over 200 years, from a variety of different platforms, including kites, balloons, rockets and