Thesis (Ph. D. in Meteorology)--Naval Postgraduate School, March 2003. / Dissertation supervisor: Wendell Nuss. Includes bibliographical references (p. 167-169). Also available online.

A radar study of two Alberta hailstorms has revealed the existence of small cellular radar echoes with durations of 10-30 minutes. These cells were found to group together to form storm families which existed for several hours. New cells invariably formed on the southern end of the storm family and migrated northward through the storm to dissipate on the northern boundary. [...]

No description available.

Thesis (Ph. D.)--University of Missouri-Columbia, 2008. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on June 10, 2009) Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1985. / Vita. Includes bibliographical references (leaves 232-247).

Thesis (doctoral)--Vrije Universiteit te Amsterdam, 1981. / Summary in Dutch. Includes bibliographical references (p. 159-166).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.

Ocean wind vectors from the SeaWinds scatterometer on QuikSCAT and GOES imagery are used to develop an objective technique that can detect and monitor tropical disturbances associated with the early stages of tropical cyclogenesis in the Atlantic basin. The technique is based on identification of surface vorticity and wind speed signatures that exceed certain threshold magnitudes, with vorticity averaged over an appropriate spatial scale. The threshold values applied herein are determined from the precursors of 15 tropical cyclones during the 1999-2004 Atlantic hurricane seasons using research-quality QuikSCAT data. Tropical disturbances are found for these cases within a range of 19 hours to 101 hours before classification as tropical cyclones by the National Hurricane Center (NHC). The 15 cases are further subdivided based upon their origination source (i.e., easterly wave, upper-level cut-off low, stagnant frontal zone, etc). Primary focus centers on the cases associated with tropical waves, since these waves account for approximately 63% of all Atlantic tropical cyclones. The detection technique illustrates the ability to track these tropical disturbances from near the coast of Africa. Analysis of the pre-tropical cyclone (TC) tracks for these cases depict stages, related to wind speed and precipitation, in the evolution of an easterly wave to tropical cyclone. / A Thesis submitted to the Department of Meteorology in partial fulfillment of the requirements for the degree of Master of Science. / Spring Semester, 2006. / November 22, 2005. / Quikscat, Seawinds, Tropical Disturbance, Tropical Cyclogenesis, Vorticity / Includes bibliographical references. / James J. O’Brien, Professor Directing Thesis; Mark A. Bourassa, Committee Member; Paul D. Reasor, Committee Member.

The need for a surface based, dense meteorological observation network in Florida has long been recognized. In 2002, scientists across the state of Florida joined together with the National Science Foundation, the REALM Project, the Florida State University, and other agencies to create the Miami-Dade Mesonet. This research is a study of the instruments used in the Miami-Dade Mesonet (the Davis Vantage Pro Weather Instruments) and of the data collected by the mesonet. The goal is to prove that though the Davis Weather Instruments are inexpensive, and the placement of the instruments in the mesonet do not meet all the operational standards and procedures for surface observing, that the mesonet can still produce accurate and practical observations. This research will present an overall assessment of the accuracy and quality of the data collected. First, an internal examination of three Davis weather instruments was conducted on the roof of the James J. Love Math-Meteorology building on the FSU campus, in order to evaluate the integrity of the equipment in a controlled setting with varying parameters. Next, quality assurance procedures were run on the actual data from the Miami-Dade Mesonet to determine how well the mesonet compares with Automatic Surface Observing Systems (ASOS). Then, four case studies were conducted to examine the ability of the instruments to detect specific types of weather events, including a tornado outbreak, a record high temperature in mid-winter, a heavy rainfall event, and a sea breeze passage case. Each study evaluated a different aspect of the mesonet stations, leading to positive results proving that the systems provide operationally significant observations. The REALM Project was extended in the summer of 2005 through the Florida Panhandle and parts of central Florida, which will greatly increase observational coverage in data sparse regions in rural areas, especially in northwest Florida. / A Thesis submitted to the Department of Meteorology in partial fulfillment of the requirements for the degree of Master of Science. / Spring Semester, 2006. / November 1, 2005. / Mesonet, Miami-Dade Mesonet, Florida Mesonet, Fsu Meteorology, Rooftop Weather Stations, Rooftop Weather Systems, Davis Instruments, Mesoscale Meteorology, Mesoscale Network / Includes bibliographical references. / Paul Ruscher, Professor Directing Thesis; Carol Anne Clayson, Committee Member; Robert Hart, Committee Member; Andrew I. Watson, Outside Committee Member.

In this study, the Petterssen-Sutcliffe development equation is used to examine cyclogenesis. In the past, several other methods have been used to study cyclogenesis and calculate vertical motion, such as the kinematic and adiabatic methods, quasi-geostrophic theory as well as the approaches derived from them. However, there is little documentation on the application of the historical Petterssen-Sutcliffe method, and hence the motivation for this study. The forcing terms of the Petterssen-Sutcliffe development equation are calculated using GEMPAK software. These forcing terms include vorticity advection, temperature advection, stability, and diabatic heating. Two mid-latitude storms and two tropical systems were analyzed to see if this method could recognize cyclogenesis in both baroclinic and barotropic environments. The first mid-latitude storm occurred in late January 2000. It formed off the coast of the Carolinas and traveled up the East Coast over the Atlantic Ocean. The second storm spent its life cycle over land in the Mid-Atlantic and New England regions during March 1999. Both tropical systems originated in the Gulf of Mexico: Hurricane Earl (1998) and Hurricane Gordon (2000). This method of analysis was shown to have general success in identifying cyclogenesis of mid-latitude cyclones and somewhat limited success with tropical storms. It is hoped that this method will benefit both educational and operational environments where students and forecasters can use this additional analysis to supplement their understanding of the atmosphere. / A Thesis submitted to the Department of Meteorology in partial fulfillment of the requirements for the degree of Master of Science. / Fall Semester, 2004. / June 16, 2004. / Surface Tendency / Includes bibliographical references. / Paul Ruscher, Professor Directing Thesis; Henry Fuelberg, Committee Member; T. N. Krishnamurti, Committee Member.