date: Sat, 13 Oct 2007 20:28:21 +0100
subject: Reviewer Invitation for EPSL-D-07-00839
Ms. Ref. No.: EPSL-D-07-00839
Title: Evidence for Solar Forcing in Variability of Pressures and Temperatures in Europe
Authors: Elena Blanter; Jean-Louis Le Mou�l; Mikhail Shnirman; Vincent Emmanuel Courtillot, PhD
Journal: Earth and Planetary Science Letters
This is the second part of my request. I hope you can help. Since the two papers are closely related, I would very much appreciate your views on the merit of two separate papers.
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With kind regards,
Rob D. van der Hilst
Earth and Planetary Science Letters
We study the solar signature in the temporal evolution of disturbances of European temperature and pressure in the 20th century, using long series of daily data provided by meteorological stations. We use three independent indices of solar activity which exhibit similar evolution after 22-yr running averaging. With the same 22-yr averaging, disturbances of temperature and pressure are found to be dominated by wintertime perturbations. The solar signature in the wintertime disturbances is especially strong throughout the 20-th century and does not weaken in the last decades, contrary to what happens for whole year data. Disturbances of minimal temperature, pressure and wind direction in the wintertime display remarkable similarity: All these meteorological (actually almost climatic, given the 22-yr averaging) characteristics closely follow the solar signature as far as the winter season is concerned, even when little or no correlation is observed for the whole year. We
discuss the particular features of European climate and speculate on how solar forcing may manifest itself in other regions.