Statistics – Computation
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmgp53a..04k&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #GP53A-04
Statistics
Computation
2104 Cosmic Rays
Scientific paper
Various aspects of space climate studies related to access of cosmic rays to the atmosphere and the Earth's surface require the knowledge of transmissivity of the magnetosphere. A short review of (i) the sources of data on geomagnetic field evolution in the past relevant for transmissivity estimates and (ii) selected results on geomagnetic cut-off computations is presented. The computations of vertical cut-off rigidities for various positions on the Earth's surface and various epochs before 2005 are done. Contour maps of cut-offs for the period of years between 0 and 1600 are obtained. The effect of oblique access of particles is discussed. The implications of the results for selected tasks of space climate research, in particular for ionisation of the atmosphere, are discussed. This work was supported by the Slovak Research and Development Agency under the contract No. APVV-51- 053805 and by VEGA grant 7063.
Bobik P.
Kassovicova J.
Kudela Karel
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