Physics
Scientific paper
Jul 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jastp..59.1233b&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, v. 59, p. 1233-1244.
Physics
5
Scientific paper
The Sazonov index characterising the intensity of meridional circulation has been used to study the influence of short-term changes in solar activity on baric (pressure) field perturbations in the stratosphere. The results show that stratospheric circulation responses to various manifestations of solar activity may be different. The solar central meridian passage of active regions leads to the development of stratospheric perturbations in the case of both west and east QBO phases. Forbush decreases of galactic cosmic rays are followed by falls of the stratospheric perturbation to minimal levels, irrespective of the QBO phase. Interplanetary sector boundaries' intersections of Earth lead to increases of the stratospheric perturbation in the case of away/toward boundaries and to decreases of the perturbation in the case of toward/away boundaries, the effect being dependent on the content of volcanic aerosols in the stratosphere and on the QBO phase. The results support the global electric circuit mechanism put forward by Tinsleyet al. (1989).
Besprozvannaya A. S.
Ohl G. I.
Sazonov B. I.
Scherba I. A.
Schuka T. I.
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