Letter | Published:

Short term relationships between solar flares, geomagnetic storms, and tropospheric vorticity patterns

Nature volume 257, pages 113115 (11 September 1975) | Download Citation

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Abstract

IT has been found that the 500—mbar vorticity area index (VAI), which is a rough measure of the strength of the cyclonic activity over the Northern Hemisphere, responds to solar flares in at least two ways. First, there is an increase in the VAI in the first two days after the flare. Then, after the geomagnetic storm which often follows a major solar flare, there is a sharp decrease in the VAI. The results are consistent with earlier studies of the development of pressure troughs in the North Pacific area.

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References

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Author information

Affiliations

  1. Department of Astro-Geophysics, University of Colorado, Boulder, Colorado 80302

    • R. H. OLSON
  2. University Corporation for Atmospheric Research, PO Box 3000 Boulder, Colorado 80303

    • W. O. ROBERTS
  3. National Center for Atmospheric Research, PO Box 3000 Boulder, Colorado 80303

    • C. S. ZEREFOS

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DOI

https://doi.org/10.1038/257113a0

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