Physics
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3505811u&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 5, CiteID L05811
Physics
20
Global Change: Regional Climate Change, Interplanetary Physics: Cosmic Rays, Geomagnetism And Paleomagnetism: Time Variations: Secular And Longer, Atmospheric Processes: Climate Change And Variability (1616, 1635, 3309, 4215, 4513), Global Change: Solar Variability (7537)
Scientific paper
Many studies of solar-terrestrial relation are based on globally (or hemispherically) averaged quantities, including the average cosmic ray flux. However, regional effects of cosmic ray induced ionization due to geomagnetic changes may be comparable to or even dominate over the solar signal at mid-latitudes on centennial-to-millennial time scales. We show that local changes of the tropospheric ionization due to fast migration of the geomagnetic axis are crucial on centennial time scale, and the use of global averages may smear an important effect. We conclude that changes of the regional tropospheric ionization at mid-latitudes are defined by both geomagnetic changes and solar activity, and none of the two processes can be neglected. This substantiates a necessity for a careful analysis of the regional, not global, indices at mid-latitudes and offers a new possibility to disentangle direct (solar radiation) and indirect (via cosmic rays) effects in the solar-terrestrial relations.
Korte Monika
Kovaltsov Gennadi A.
Usoskin Ilya G.
No associations
LandOfFree
Role of centennial geomagnetic changes in local atmospheric ionization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Role of centennial geomagnetic changes in local atmospheric ionization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Role of centennial geomagnetic changes in local atmospheric ionization will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-957596