caa a22 4500 605473803 CHVBK 20210128100344.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00382-014-2182-9 doi (NATIONALLICENCE)springer-10.1007/s00382-014-2182-9 Complex networks for climate model evaluation with application to statistical versus dynamical modeling of South American climate [Elektronische Daten] [Jan Feldhoff, Stefan Lange, Jan Volkholz, Jonathan Donges, Jürgen Kurths, Friedrich-Wilhelm Gerstengarbe] In this study we introduce two new node-weighted difference measures on complex networks as a tool for climate model evaluation. The approach facilitates the quantification of a model's ability to reproduce the spatial covariability structure of climatological time series. We apply our methodology to compare the performance of a statistical and a dynamical regional climate model simulating the South American climate, as represented by the variables 2m temperature, precipitation, sea level pressure, and geopotential height field at 500hPa. For each variable, networks are constructed from the model outputs and evaluated against a reference network, derived from the ERA-Interim reanalysis, which also drives the models. We compare two network characteristics, the (linear) adjacency structure and the (nonlinear) clustering structure, and relate our findings to conventional methods of model evaluation. To set a benchmark, we construct different types of random networks and compare them alongside the climate model networks. Our main findings are: (1) The linear network structure is better reproduced by the statistical model statistical analogue resampling scheme (STARS) in summer and winter for all variables except the geopotential height field, where the dynamical model CCLM prevails. (2) For the nonlinear comparison, the seasonal differences are more pronounced and CCLM performs almost as well as STARS in summer (except for sea level pressure), while STARS performs better in winter for all variables. The Author(s), 2014 Climate model evaluation nationallicence Complex networks nationallicence South American climate nationallicence Network comparison nationallicence Feldhoff Jan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut Lange Stefan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut Volkholz Jan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut Donges Jonathan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut Kurths Jürgen Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut Gerstengarbe Friedrich-Wilhelm Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut Climate Dynamics Springer Berlin Heidelberg 44/5-6(2015-03-01), 1567-1581 0930-7575 44:5-6<1567 2015 44 382 https://doi.org/10.1007/s00382-014-2182-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-014-2182-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Feldhoff Jan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut NATIONALLICENCE 700 1- Lange Stefan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut NATIONALLICENCE 700 1- Volkholz Jan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut NATIONALLICENCE 700 1- Donges Jonathan Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut NATIONALLICENCE 700 1- Kurths Jürgen Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut NATIONALLICENCE 700 1- Gerstengarbe Friedrich-Wilhelm Potsdam Institute for Climate Impact Research, P.O. Box 601203, 14412, Potsdam, Germany aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 44/5-6(2015-03-01), 1567-1581 0930-7575 44:5-6<1567 2015 44 382