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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

A multiple beam sodar for the measurement of atmospheric turbulence

Mandock, Randal Lee Nicholas 12 1900 (has links)
No description available.
72

The evaluation of extrapolation schemes for the growth or decay of rain area and applications /

Tsonis, Anastosios A. (Anastasios Antonios) January 1982 (has links)
Radar cells from the GATE experiment, from Spain and from the Montreal area were followed and measurements of their total rain flux and area were extracted. The values of the flux and area, for each one of the cells, for initial time increments T(,0) were used to evaluate various extrapolation schemes for forecasting purposes. The extrapolation procedure that gave the smallest error in forecasting the changes in flux and area, was found to be the linear one and the optimum increment T(,0) was about 30 min. However, even though these techniques have the advantage of establishing a trend in the behavior of the flux and area with time, a comparison of the forecast errors from the linear extrapolation scheme with those from the assumption of no change in cell area and rain flux shows insignificant improvements. A technique including both cell motion and internal changes in flux and area of the rain cells was developed to evaluate the accuracy of rain accumulation forecasts. Again, it was found that the errors were similar with those generated by the assumption of no change in rain flux and area from the moving cell. / The preceding results were used as a possible input into the design and evaluation of cloud seeding experiments. Based on this, a method is developed which gives the necessary number of experiments (i.e., seeded cases) in order for a seeding factor to be statistically significant at specified confidence levels. As a conclusion, it can be stated that the use of short term rain predictions (which are translated as differences of the rain flux in time) is very promising. In comparison to other techniques described in the literature this method appears to be superior, in the sense that fewer experiments are needed to detect seeding factors at specified confidence levels.
73

Alberta hailstorms : a radar study and model.

Chisholm, Alexander James January 1970 (has links)
No description available.
74

Hail detection with a polarization diversity radar.

Barge, B. L. January 1971 (has links)
No description available.
75

Meteor observations with a narrow beam VHF radar / by Manuel A. Cervera.

Cervera, Manuel A. January 1996 (has links)
Copies of author's previously published articles are inserted between p. 272-283 and are not numbered as part of main text. / Bibliography: p. 283-293. / xxii, 293 p. : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis is concerned with the observations of meteors with a narrow beam, high gain, VHF radar system, operating at a frequency of 54.1 MHz. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1996
76

Signal analysis with applications to atmospheric radars / by David A. Holdsworth.

Holdsworth, David A. January 1995 (has links)
Bibliography: p. 363-371. / xxix, 371 p. : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis provides a systematic analysis of the performance of a number of spaced antenna radar processing techniques. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1995
77

Meteorological studies of cut-off lows over Australia with a VHF radar / by Alireza Kazempour.

Kazempour, Alireza January 1998 (has links)
Addendum inserted onto front end-paper. / Bibliography: p. 261-284. / xv, 284 p. : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Provides a thorough analysis of cut-off low phenomena over Australia by using the VHF radar system, operating at a frequency of 54.1MHz / Thesis (M.Eng.Sc.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1999
78

Observations of drizzle cells in marine stratocumulus

Leon, David C. January 2006 (has links)
Thesis (Ph. D.)--University of Wyoming, 2006. / Title from PDF title page (viewed on Jan. 2, 2008). Includes bibliographical references.
79

Meteorological studies of cut-off lows over Australia with a VHF radar /

Kazempour, Alireza. January 1998 (has links) (PDF)
Thesis (M.Eng.Sc.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1999. / Addendum inserted onto front end-paper. Bibliography: p. 261-284.
80

Medium frequency radar studies of meteors

Grant, Stephen Ian. January 2003 (has links)
Thesis (Ph.D.)--University of Adelaide, School of Chemistry and Physics, 2003? / "July 2003." Includes bibliographical references (leaves 459-484). Also available in a print form.

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