Hurricane intensity changes associated with geomagnetic variation

• Published in: Atmospheric Science Letters
• Main Authors: Elsner, James B., Kavlakov, S. P.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2001
• Subjects: North Atlantic
• Online Access: http://dx.doi.org/10.1006/asle.2001.0043; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1006%2Fasle.2001.0043; https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1006/asle.2001.0043

Abstract Recently some indications have appeared that several purely meteorological processes in the terrestrial atmosphere are dependent upon magnetosphere variations. To analyse the possible relationship with North Atlantic hurricane intensification, the authors examine geomagnetic data for ten days prior to all hurricanes over the last 50 years (1950–1999). A significant positive correlation between the averaged Kp index of global geomagnetic activity and hurricane intensity as measured by maximum sustained wind speed is identified for baroclinically‐initiated hurricanes. Results are consistent with a mechanism whereby ionization processes trigger glaciation at cloud top which leads to hurricane intensification through upper tropospheric latent heat release. Copyright © 2003 Royal Meteorological Society.