Thesis--Ph. D., University of Hong Kong. / Errata slip inserted. Mimeographed.

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Conditional sampling techniques were used to analyze airbourne carbon dioxide and water vapour flux traces recorded during the FIFE experiment. Two analysis methods based on quadrant analysis were used to isolate and examine extreme contributions to estimates of the mean flux. The first method was a graphical analysis based on 'hyperbolic holes'. This method was used to attain the result that 80% of the flux-fraction is carried by 20% of the time-fraction. The second method, based on quadrant analysis, permitted the distinction of physical structures which are thought to represent the signatures of turbulent flux structures such as eddies or thermals. Overall results indicate that mean flux estimates over the FIFE site are dominated by a very few intermittent extreme events.

Atmospheric turbulence results taken on the Antarctic plateau are presented in this thesis. Covering two high sites: South Pole and Dome C, this work describes their seeing and meteorological conditions. Using an acoustic sounder to study the turbulence profile of the first kilo- metre of the atmosphere and a Differential Image Motion Monitor (DIMM) to investigate the integrated seeing we are able to deduce important at- mospheric parameters such as the Fried parameter (r0) and the isoplanatic angle (??0). It was found that at the two sites, the free atmosphere (above the first kilometer) was extremely stable and contributed between 0.2" and 0.3" of the total seeing with no evidence of jet or vortex peaks of strong turbulence. The boundary layer turbulence is what differentiates the two sites. Located on the Western flank of the plateau, the South Pole is prone to katabatic winds. Dome C on the other hand is on a local maximum of the plateau and the wind conditions are amongst the calmest in the world. Also linked to the topography is the vertical extent of the temperature in- version that is required to create optical turbulence. At the South Pole the inversion reaches 300 m and only 30 m at Dome C. This difference results in relatively poor seeing conditions at the South Pole (1.8") and excellent at Dome C (0.27"). The strong correlation between the seeing and the ground layer meteorological conditions indicates that even better seeing could be found at Dome A, the highest point of the plateau. Having most of the turbulence near the ground is also incredibly ad- vantageous for adaptive optics. The isoplanatic angle is respectively 3.3" and 5.7" for the South Pole and Dome C. This is significantly larger than at temperate sites where the average isoplanatic angle rarely exceeds 2". This means that wider fields can be corrected without the complication of conjugation to specific layers. For such purpose the potential is even more interesting. We show that ground conjugated adaptive optics would decrease the natural seeing to 0.22" for a wide field of 10 and 0.47" for a field of 1" at the South Pole. At Dome C the results are less impressive due to the already excellent seeing, but a gain of 0.1&quote can still be achieved over 1&quote. These results show that high angular resolution observations can be done better on the Antarctic plateau than any other known site.

Thesis (Ph. D.)--University of Wyoming, 2005. / Title from PDF title page (viewed on Nov. 5, 2007). Includes bibliographical references (p. 166-170).

Thesis (Ph. D.)--Oregon Graduate Center, 1988.

Thesis (Ph.D.) -- University of Adelaide, Dept. of Physics, 2000? / Copies of author's previously published articles inserted. Bibliography: p. 227-245.

Thesis (Ph. D.)--University of Washington, 2007. / Vita. Includes bibliographical references (p. 87-94).

Thesis (M.S.)--University of Delaware, 2008. / Principal faculty advisor: I. Pablo Huq, College of Marine and Earth Studies. Includes bibliographical references.

Thesis (Ph.D. in Philosophy (Marine, Earth, and Atmospheric Sciences))--North Carolina State University, July 2008. / Title from reproduction cover. "July 2008." Thesis advisor(s): S. Pal Arya and Michael L. Kaplan. Performed by North Carolina State University; sponsored by the United States Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio. Includes vita. "A dissertation submitted to the Graduate Faculty of North Carolina State University in partial fulfillment of the requirements for the Degree of Doctor of Philosophy, Marine, Earth, and Atmospheric Sciences from North Carolina State University. 2008."--P. [iv1]. "This research was funded by Air Force grant FA8718-04-C-0011."--p. ii. "Cl09-0007." Includes bibliographical references (p. 175-181). Also available online from the North Carolina State University Library and DTIC Online Web sites.