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Climate of the Past An interactive open-access journal of the European Geosciences Union
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
09 Feb 2009
Review status
This discussion paper has been under review for the journal Climate of the Past (CP). The manuscript was not accepted for further review after discussion.
Astronomical forcing and mathematical theory of glacial-interglacial cycles
A. V. Kislov Moscow State University, Moscow, Russia
Abstract. There are three important features of a proxy time series recorded during the Late Pleistocene. They are: 1) 100 000-year cycle as a dominant control of global glacial-interglacials through the late Quaternary, 2) fluctuations with periods of about 40 and 20 thousand years (their contribution to dispersion is no more than 20%), 3) ''Red-noise'' behavior of the time series. Direct influence of the insolation change created by fluctuations of the eccentricity is too weak to cause the observed 100 000-year climate fluctuations. Therefore, other mechanisms of such a rhythm are proposed. On the basis of the equation of the heat budget, the equation describing dynamics of zonally averaged temperature is developed. Various combinations of terms of this equation are discussed. They present a linear response to the Milankovitch periodicity, the Langeven stochastic equation, the equation of delay oscillator, the stochastic equation of spontaneous transitions, and the equation of stochastic resonance.

Orbitally-induced changes in the solar energy flux received by the Earth play an important role as a mechanism starting process of climate changes which is supported and intensified by different feedbacks within the climate system. Positive anomalies of solar radiation serve as a mechanism causing reorganization of the climate only in rare cases when inclination of Earth axis of rotation increases and, simultaneously, perihelion takes place during the summer time (for the Northern Hemisphere).

Citation: Kislov, A. V.: Astronomical forcing and mathematical theory of glacial-interglacial cycles, Clim. Past Discuss., 5, 327-340, doi:10.5194/cpd-5-327-2009, 2009.
A. V. Kislov
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
RC S103: 'Referee Review ', Anonymous Referee #1, 09 Mar 2009 Printer-friendly Version 
RC S118: 'Referee comment', Anonymous Referee #3, 12 Mar 2009 Printer-friendly Version 
RC S129: 'Review', Anonymous Referee #2, 13 Mar 2009 Printer-friendly Version 
AC S208: 'The final author comments on “Astronomic', Alexander Kislov, 15 Apr 2009 Printer-friendly Version 
A. V. Kislov
A. V. Kislov


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