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dc.contributor.author Molini, A
dc.contributor.author Katul, GG
dc.contributor.author Porporato, A
dc.date.accessioned 2011-06-21T17:27:10Z
dc.date.issued 2010-01-01
dc.identifier.citation Geophysical Research Letters, 2010, 37 (1)
dc.identifier.issn 0094-8276
dc.identifier.uri http://hdl.handle.net/10161/4105
dc.description.abstract © 2010 by the American Geophysical Union.The cross-scale probabilistic structure of rainfall intensity records collected over time scales ranging from hours to decades at sites dominated by both convective and frontal systems is investigated. Across these sites, intermittency build-up from slow to fast time-scales is analyzed in terms of heavy tailed and asymmetric signatures in the scale-wise evolution of rainfall probability density functions (pdfs). The analysis demonstrates that rainfall records dominated by convective storms develop heavier-Tailed power law pdfs toward finer scales when compared with their frontal systems counterpart. Also, a concomitant marked asymmetry build-up emerges at such finer time scales. A scale-dependent probabilistic description of such fat tails and asymmetry appearance is proposed based on a modified q-Gaussian model, able to describe the cross-scale rainfall pdfs in terms of the nonextensivity parameter q, a lacunarity (intermittency) correction and a tail asymmetry coefficient, linked to the rainfall generation mechanism.
dc.language.iso en_US en_US
dc.relation.ispartof Geophysical Research Letters
dc.relation.isversionof 10.1029/2010GL042634
dc.title Scale-wise evolution of rainfall probability density functions fingerprints the rainfall generation mechanism
dc.title.alternative en_US
dc.type Journal Article
dc.description.version Version of Record en_US
duke.date.pubdate 2010-4-7 en_US
duke.description.endpage L07403 en_US
duke.description.issue en_US
duke.description.startpage L07403 en_US
duke.description.volume 37 en_US
dc.relation.journal Geophysical Research Letters en_US
pubs.issue 1
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Nicholas School of the Environment
pubs.organisational-group /Duke/Nicholas School of the Environment/Environmental Sciences and Policy
pubs.organisational-group /Duke/Pratt School of Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Civil and Environmental Engineering
pubs.publication-status Published
pubs.volume 37
dc.identifier.eissn 1944-8007

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