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Sensitivity of North Atlantic Tropical Cyclone Tracks to Climate Variability and Climate ChangeColbert, Angela Joy 01 January 2010 (has links)
This study examines the impact of natural climate variability and long-term climate change on North Atlantic tropical cyclone (TC) tracks. Using data from HURDAT for the period 1950-2007, we categorize Atlantic TCs that form in the Main Development Region into one of three track types: Straight-Moving (SM), Recurving Landfall (RCL), and Recurving Ocean (RCO) TCs. As expected, the SM storms are associated with a westward extension and strengthening of the North Atlantic Subtropical High (NASH) whereas the RCO storms coincide with a weakening of the NASH. The presence of El Nino conditions in the tropical Pacific is found to be associated with a weakening and eastward retreat of the NASH, an increase in the percentage of RCO TCs, and a decrease in the percentage of RCL TCs. Using 6-hourly wind fields from NCEP-NCAR Reanalyses, simulated tracks are computed for each historical storm in the sample using the Beta Advection Model (BAM). Using observed genesis locations, the BAM successfully reproduces the differences in TC tracks between SM, RCO and RCL storm types. When storm genesis is uniformly distributed over the MDR we find that RCL and RCO storms still exhibit a distinct difference in tracks, suggesting that differences in the large-scale steering flow over the tropical Atlantic are primarily responsible for their track differences. However the SM TCs exhibit a more northward track under the uniform genesis experiment, indicating that the more southern and western genesis location of these storms is an important contributor in determining their tracks. The observed difference between TC tracks during El Nino and La Nina events is also reproduced by the BAM under both observed and uniformly seeded genesis experiments, suggesting that it is the changes in the large-scale steering flow over the Atlantic that is responsible the larger percentage of RCO storm tracks during El Nino events. The influence of anthropogenic warming is examined using a 7 member ensemble comparing the 2xCO2 experiment to a pre-industrial control. Increased sea level pressure over the northeast and northwest quadrants of the Atlantic does not alter the average TC track.
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Investigating college student attrition : a report of an internship at the College of the North Atlantic with an analysis of first-semester student attrition /Kirby, Dale, January 1900 (has links)
Thesis (M.Ed.)--Memorial University of Newfoundland, 2000. / Bibliography: leaves 77-84.
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Democratic Peace Theory and Greek-Turkish relations in the context of the European UnionPatsiaouras, Konstantinos. January 2009 (has links) (PDF)
Thesis (Master of Arts in Security Studies)--Naval Postgraduate School, December 2009. / Thesis Advisor(s): Abenheim, Donald ; Siegel, Scott. "December 2009." Description based on title screen as viewed on January 28, 2010. Author(s) subject terms: European Union, Greece, Turkey, Democratic Peace Theory, economic interdependence, intergovernmental organizations, NATO. Includes bibliographical references (p. 109-116). Also available in print.
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NATO-Russian relations : opportunities and obstacles /Fischl, Kurt E. January 2002 (has links) (PDF)
Thesis (M.A.)--Naval Postgraduate School, 2002. / Thesis advisor(s): David S. Yost, Tjarck G. Roessler. Includes bibliographical references. Also available online.
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NATO influence on Romanian national security in the post Cold War era /Popa, Silviu Daniel. January 2002 (has links) (PDF)
Thesis (M.S.)--Naval Postgraduate School, 2002. / Thesis advisor(s): Jeff Knopf, Frank Barrett. Includes bibliographical references (p. 57-58). Also available online.
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Baltic security, NATO enlargement and defense reform : the challenges of overcommitments and overlaps /Schmidt-Nechl, Oliver. January 2002 (has links) (PDF)
Thesis (M.A.)--Naval Postgraduate School, 2002. / Thesis advisor(s): David Abenheim, Tjarck Roessler. Includes bibliographical references (p. 61-74). Also available online.
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European re-union representation of eastern Europe in NATO and EU expansion /Dittmer, Jason N. O'Sullivan, Patrick. January 2003 (has links)
Thesis (Ph. D.)--Florida State University, 2003. / Advisor: Dr. Patrick O'Sullivan, Florida State University, College of Social Sciences, Dept. of Geography. Title and description from dissertation home page (viewed Sept. 29, 2003). Includes bibliographical references.
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A comparative review of executive/legislative relations in the U.S. and Russia pertaining to NATO enlargement /Levine, Marc Benjamin. January 2001 (has links)
Thesis (M.A. in National Security Affairs)--Naval Postgraduate School, September 2001. / Thesis advisor(s): Mikhail Tsypkin, Frank Teti. Includes bibliographical references (p. 41-44). Also available online.
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NATO's crisis management in the Balkans /Johnson, Jennifer L. January 2002 (has links) (PDF)
Thesis (M.A. in National Security Affairs)--Naval Postgraduate School, June 2002. / Thesis advisor(s): David S. Yost, Tjarck Roessler. Includes bibliographical references. Also available online.
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NATO's response to the 11 September 2001 terrorism : lessons learned /Kouzmanov, Krassi. January 2003 (has links) (PDF)
Thesis (M.A. in International Security and Civil-Military Relations)--Naval Postgraduate School, March 2003. / Thesis advisor(s): Maria Rasmussen, David Yost. Includes bibliographical references. Also available online.
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