Vis enkel innførsel

dc.contributor.authorRypdal, Kristoffer
dc.contributor.authorRypdal, Martin Wibe
dc.contributor.authorFredriksen, Hege-Beate
dc.date.accessioned2016-02-09T09:24:01Z
dc.date.available2016-02-09T09:24:01Z
dc.date.issued2015-11-01
dc.description.abstractA two-dimensional stochastic–diffusive energy balance model (EBM) formulated on a sphere by G. R. North et al. is explored and generalized. Instantaneous and frequency-dependent spatial autocorrelation functions and local temporal power spectral densities are computed for local sites and for spatially averaged surface temperature signals up to the global scale. On time scales up to the relaxation time scale given by the effective heat capacities of the ocean mixed layer and land surface, respectively, scaling features are obtained that are reminiscent of what can be derived from the observed temperature field. On longer time scales, however, the EBM predicts a transition to a white-noise scaling, which is not reflected in the observed records. A fractional generalization, which can be considered as a spatial generalization of the zero-dimensional, long-memory EBM of M. Rypdal and K. Rypdal, is proposed and explored. It is demonstrated that this generalized model describes qualitatively the main correlation characteristics of the temperature field reported in the literature and those derived herein from 500-yr-long control simulations of the NorESM Earth system model. A further generalization of the model, to include long-term persistence in the stochastic forcing, is also discussed.en_US
dc.identifier.cristinIDFRIDAID 1276305
dc.identifier.doi10.1175/JCLI-D-15-0183.1
dc.identifier.issn0894-8755
dc.identifier.urihttps://hdl.handle.net/10037/8447
dc.identifier.urnURN:NBN:no-uit_munin_8020
dc.language.isoengen_US
dc.publisherAmerican Meteorological Societyen_US
dc.rights.accessRightsopenAccess
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453en_US
dc.titleSpatiotemporal Long-Range Persistence in Earth’s Temperature Field: Analysis of Stochastic-Diffusive Energy Balance Modelsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


Tilhørende fil(er)

Thumbnail
Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel