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dc.contributor.authorMcLeod, Jordan Taylor
dc.date.accessioned2015-07-29T04:30:29Z
dc.date.available2015-07-29T04:30:29Z
dc.date.issued2014-12
dc.identifier.othermcleod_jordan_t_201412_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/mcleod_jordan_t_201412_ms
dc.identifier.urihttp://hdl.handle.net/10724/31478
dc.description.abstractRapid changes in atmospheric circulation variability over the North Atlantic region and the extent of surface melting across the Greenland ice sheet (GrIS) have been observed during recent decades. In this thesis, a historical climatology of extreme Greenland blocking episodes, associated with unusually strong and persistent synoptic-scale ridges, from 1958–2013 is examined within the context of anomalous anticyclonic circulation patterns over Greenland during recent years. The role of other atmospheric and oceanic features within the North Atlantic climate system, including extratropical cyclone activity and sea surface temperatures, on the evolution of extreme Greenland blocking episodes and GrIS melting is also examined. Contributions from adiabatic and diabatic sources of heating are quantified in order to determine processes associated with blocking anticyclones and precursor cyclones that can enhance GrIS melting. The long-term increase in Greenland blocking, coupled with additional factors, suggests that GrIS melting may continue to accelerate into the future.
dc.languageeng
dc.publisheruga
dc.rightsOn Campus Only Until 2016-12-01
dc.subjectGreenland blocking
dc.subjectNorth Atlantic cyclones
dc.subjectGreenland ice sheet
dc.subjectArctic amplification
dc.titleThe impact of extreme Greenland blocking episodes and North Atlantic precursor cyclones on the acceleration of summer melting across the Greenland ice sheet
dc.typeThesis
dc.description.degreeMS
dc.description.departmentGeography
dc.description.majorGeography
dc.description.advisorThomas Mote
dc.description.committeeThomas Mote
dc.description.committeeJ. Marshall Shepherd
dc.description.committeeAndrew Grundstein


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