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contributor authorHoffman, Forrest M.
contributor authorHargrove, William W.
contributor authorErickson, David J.
contributor authorOglesby, Robert J.
date accessioned2017-06-09T16:46:51Z
date available2017-06-09T16:46:51Z
date copyright2005/07/01
date issued2005
identifier otherams-73941.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4216110
description abstractChanges in Earth?s climate in response to atmospheric greenhouse gas buildup impact the health of terrestrial ecosystems and the hydrologic cycle. The environmental conditions influential to plant and animal life are often mapped as ecoregions, which are land areas having similar combinations of environmental characteristics. This idea is extended to establish regions of similarity with respect to climatic characteristics that evolve through time using a quantitative statistical clustering technique called Multivariate Spatio-Temporal Clustering (MSTC). MSTC was applied to the monthly time series output from a fully coupled general circulation model (GCM) called the Parallel Climate Model (PCM). Results from an ensemble of five 99-yr Business-As-Usual (BAU) transient simulations from 2000 to 2098 were analyzed. MSTC establishes an exhaustive set of recurring climate regimes that form a ?skeleton? through the ?observations? (model output) throughout the occupied portion of the climate phase space formed by the characteristics being considered. MSTC facilitates direct comparison of ensemble members and ensemble and temporal averages since the derived climate regimes provide a basis for comparison. Moreover, by mapping all land cells to discrete climate states, the dynamic behavior of any part of the system can be studied by its time-varying sequence of climate state occupancy. MSTC is a powerful tool for model developers and environmental decision makers who wish to understand long, complex time series predictions of models. Strong predicted interannual trends were revealed in this analysis, including an increase in global desertification; a decrease in the cold, dry high-latitude conditions typical of North American and Asian winters; and significant warming in Antarctica and western Greenland.
publisherAmerican Meteorological Society
titleUsing Clustered Climate Regimes to Analyze and Compare Predictions from Fully Coupled General Circulation Models
typeJournal Paper
journal volume9
journal issue10
journal titleEarth Interactions
identifier doi10.1175/EI110.1
journal fristpage1
journal lastpage27
treeEarth Interactions:;2005:;volume( 009 ):;issue: 010
contenttypeFulltext


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