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dc.contributor.authorOglesby, R. J.eng
dc.contributor.authorMokhov, Igor I.eng
dc.contributor.authorLupo, Anthony R., 1966-eng
dc.contributor.corporatenameUniversity of Missouri-Columbia. College of Agriculture, Food and Natural Resources (CAFNR). School of Natural Resources. Department of Soil, Environmental and Atmospheric Sciences.eng
dc.date.issued1997eng
dc.descriptionhttp://solberg.snr.missouri.edu/gcc/eng
dc.description.abstractUsing output made with the National Center for Atmospheric Research (NCAR) Community Climate Model Version 1 (CCM1), the characteristics of blocking events over the Northern Hemisphere in a ten-year present day control simulation with a CO2 concentration of 330 ppm were compared to those in a previously analyzed observational three-year climatology. The characteristics of blocking events in a double present-day CO2 concentration simulation were then compared to those in the control simulation in order to evaluate how these characteristics might change in an increased CO2 atmosphere. The results demonstrated that in the Northern Hemisphere the CCM1 correctly simulated many characteristics of blocking events such as average annual number of occurrences, annual variations is size and intensity, and preferred formation regions. A more detailed analysis (i.e., by region and season) revealed some di¤erences between the CCM1 and observed blocking events for characteristics such as mean frequency of occurrence, intensity, size and duration. In addition, the model failed to capture adequately the occurrence of blocking events over the western Asian continent. A comparison of the double CO2 concentration run to the control showed that, in general, blocking events were more persistent and weaker, but of similar size in the increased CO2 atmosphere. Also, some statistically signiÞcant regional and seasonally dependent changes were found in the frequency of occurrence, duration, and intensity. Finally, a correlation between block size and intensity, signiÞcant at the 99% conÞdence level, was found in each climatology. This result is similar to a correlation found in the analysis of observations.eng
dc.identifier.citationClimate Dynamics (1997) 13: 181-195.eng
dc.identifier.issn0930-7575eng
dc.identifier.urihttp://hdl.handle.net/10355/2507eng
dc.publisherSpringer-Verlageng
dc.relation.ispartofcollectionSoil, Environmental and Atmospheric Sciences publications (MU)eng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. College of Agriculture, Food and Natural Resources. School of Natural Resources. Department of Soil, Environmental and Atmospheric Scienceseng
dc.source.urihttp://solberg.snr.missouri.edu/gcc/eng
dc.subjectblocking eventseng
dc.subjectatmospheric scienceeng
dc.subjectNational Center for Atmosphere Researcheng
dc.subject.lcshAtmospheric physicseng
dc.subject.lcshEnvironmental scienceseng
dc.subject.lcshAnticycloneseng
dc.subject.lcshClimatologyeng
dc.subject.lcshBlocking (Meteorology)eng
dc.titleClimatological features of blocking anticyclones: a study of Northern Hemisphere CCM1 model blocking events in present-day and double CO2 concentration atmosphereseng
dc.typeArticleeng


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