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Cosmic rays and stratospheric aerosols: Evidence for a connection?

dc.contributor.authorVanhellemont, F.
dc.contributor.authorFussen, D.
dc.contributor.authorBingen, C.
dc.date2002
dc.date.accessioned2017-05-03T12:11:07Z
dc.date.available2017-05-03T12:11:07Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/5196
dc.descriptionIn the search for the hypothetical missing link between a variety of atmospheric parameters and solar variability, we apply a Granger causality test to monthly averages of neutron counts (a proxy for cosmic rays), as measured at the Climax station, and stratospheric aerosol number densities, derived from extinction coefficients measured by the Stratospheric Aerosol and Gas Experiment II. A causal connection between the two time series is suggested. Further study of the cross-correlation coefficient confirms this finding, indicating that cosmic rays influence stratospheric aerosols through a process with a time response of a few months. Our results have important implications for the hypothesis of a physical mechanism that links both quantities.
dc.languageeng
dc.titleCosmic rays and stratospheric aerosols: Evidence for a connection?
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeAtmospheric aerosols
dc.subject.freeAtmospheric density
dc.subject.freeCorrelation methods
dc.subject.freeCosmic rays
dc.subject.freeNeutrons
dc.subject.freeSolar radiation
dc.subject.freeAerosols
dc.subject.freeCosmology
dc.subject.freeCross-correlation measurements
dc.subject.freeUpper atmosphere
dc.subject.freeCosmic rays
dc.subject.freeaerosol
dc.subject.freecorrelation
dc.subject.freecosmic ray
dc.subject.freeglobal change
dc.subject.freestratosphere
dc.subject.freeAtmospheric parameters
dc.subject.freeCross-correlation coefficient
dc.subject.freeExtinction coefficients
dc.subject.freeGranger causality test
dc.subject.freeNumber density
dc.subject.freePhysical mechanism
dc.subject.freeSolar variability
dc.subject.freeStratospheric aerosols
dc.source.titleGeophysical Research Letters
dc.source.volume29
dc.source.issue15
dc.source.pageA1715
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/2002GL015567
dc.identifier.scopus2-s2.0-0036705266


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