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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 29, issue 6
Ann. Geophys., 29, 1137–1146, 2011
https://doi.org/10.5194/angeo-29-1137-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 29, 1137–1146, 2011
https://doi.org/10.5194/angeo-29-1137-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

  25 Jun 2011

25 Jun 2011

Comment on "The PC index: review of methods", by McCreadie and Menvielle (2010)

P. Stauning P. Stauning
  • Danish Meteorological Institute, Copenhagen, Denmark

Abstract. The Polar Cap (PC) index is a controversial topic within the IAGA scientific community. Since 1997 discussions of the validity of the index to be endorsed as an official IAGA index have ensued. The article: "The PC index: review of methods", written by two members of the IAGA PC index committee, H. McCreadie and M. Menvielle, holds a critical review of some aspects of the methods used to derive PC index values. However, a number of incorrect statements and factual errors have been found and shall be called attention to and discussed in this commentary. Further critical comments concern the Corrigendum issued by the same authors and published in Ann. Geophys., 29, 813–814, 2011.

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