Articles | Volume 15, issue 3
Nonlin. Processes Geophys., 15, 445–455, 2008
https://doi.org/10.5194/npg-15-445-2008

Special issue: Nonlinear Processes in the Space Environment

Nonlin. Processes Geophys., 15, 445–455, 2008
https://doi.org/10.5194/npg-15-445-2008

  09 Jun 2008

09 Jun 2008

Solar cycle dependence of scaling in solar wind fluctuations

S. C. Chapman, B. Hnat, and K. Kiyani S. C. Chapman et al.
  • Centre for Fusion, Space and Astrophysics, Physics Department, University of Warwick, Coventry, CV4 7AL, UK

Abstract. In this review we collate recent results for the statistical scaling properties of fluctuations in the solar wind with a view to synthesizing two descriptions: that of evolving MHD turbulence and that of a scaling signature of coronal origin that passively propagates with the solar wind. The scenario that emerges is that of coexistent signatures which map onto the well known "two component" picture of solar wind magnetic fluctuations. This highlights the need to consider quantities which track Alfvénic fluctuations, and energy and momentum flux densities to obtain a complete description of solar wind fluctuations.