Thesis (M.S.)--University of Wyoming, 2007. / Title from PDF title page (viewed on June 16, 2008). Includes bibliographical references (p. 75-80).

Thesis (Ph. D.)--University of Cambridge, 1998. / Includes bibliographical references (p. 197-201).

Thesis (M.S.)--Florida State University, 2005. / Advisor: Dr. Xiaolei Zou, Florida State University, College of Arts and Sciences, Dept. of Meteorology. Title and description from dissertation home page (viewed June 10, 2005). Document formatted into pages; contains xiii, 112 pages. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1987. / Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 152-157).

Thesis (Ph. D.)-- University of Washington, 2004. / Vita. Includes bibliographical references (leaves 242-251).

Thesis (M.Sc.)--University of Alberta, 2010. / Title from PDF file main screen (viewed on July 2, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science, Department of Earth and Atmospheric Sciences, University of Alberta. Includes bibliographical references.

Made available in DSpace on 2014-10-09T12:55:32Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:05:04Z (GMT). No. of bitstreams: 0 / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

Made available in DSpace on 2014-10-09T12:55:32Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:05:04Z (GMT). No. of bitstreams: 0 / Neste trabalho são apresentados resultados relativos ao desenvolvimento de uma metodologia de calibração independente de um sistema LIDAR Raman para medidas de razão de mistura do vapor dágua, avaliando-se a eficiência total de transmissão óptica do sistema LIDAR Raman. Uma calibração independente ou absoluta de um sistema LIDAR foi possível por meio de medidas e cálculos dos parâmetros relevantes. A metodologia de calibração independente apresentada é baseada na decomposição das equações da razão de mistura do vapor dágua, especialmente na avaliação do fator de calibração e as incertezas relativas à transmissão óptica e secções diferenciais de espalhamento. A eficiência de transmissão incluiu fatores como a refletividade do telescópio, transmissão dos componentes ópticos e filtros. A avaliação da eficiência do sistema foi realizada com do uso de uma lâmpada calibrada de tungstênio em duas configurações distintas de filtros de interferência, (banda larga e banda estreita) instalados no sistema LIDAR Raman da Howard University (HURL). A avaliação da secção diferencial de espalhamento Raman para o vapor dágua foi realizada pelo uso de um modelo téorico descrito na literatura e por uma primeira aproximação experimental. Os resultados mostraram consistência e que essa metodologia de calibração pode ser usada em uma base rotineira para medidas de vapor dágua atmosférico. / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

A higher frequency radio channel both increase the possible data rate and de- crease the required antenna size to efficiently transmit data. Higher frequency also introduce larger weakness to signal loss due to atmospheric effects. Al- phasat satellite conduct experiments for future use of higher frequencies by the Aldo Paraboni Payload. Budapest University of Technology have receiv- ing antennas for both transmitted Alphasat signals in the Ka band and Q band. Meteorological surface data is also gathered in close proximity of the receiving antennas. The relationship between the meteorological data and attenuation on the received signal is studied. A focus lies on the effects of water vapor and clouds.  International Telecommunication Union prediction methods for clouds and atmospheric gases are applied on the meteorological data. This provide a foundation for the analysis of received attenuation on the Q band signal at frequency 39,402 GHz. The analysis aim to investigate if there is any rela- tionship between surface meteorological data and atmospheric effects such as cloud and atmospheric gases. Cross-correlation was used to find similarities between the parameters.  The analysed data is over the month of April 2018. During this month seven different rain events were indicated by the rain rate tipping bucket. These regions showed strong influence of rain on the surface temperature and hu- midity was used to identify other regions with no rain characteristics. Only four out of 16 regions above 2,5 dB had no characteristics similar to rain with four other regions showing indistinguishable source. These eight regions were most promising of being caused by cloud and atmospheric gases. The large quantity of attenuation events below 2,5 dB made further manual analysis difficult. ITU methods predicted a maximum attenuation of 3 dB for clouds and atmospheric gases. Future work could improve analysis on attenuation events below 2,5 dB by pattern recognition with the characteristics found in this work.

Water scarcity has caused severe impact on the entire ecosphere while the climate change is resulting in high frequency of extreme weather conditions, especially extended period of drought. Due to the even increasing world’s population and the continued societal modernization, water scarcity is now one of the leading global challenges towards the development of human society. On the other hand, atmospheric water, accounting for 6 times the water in all rivers on Earth, is emerging as an alternative water resource. This dissertation thoroughly investigated the fully solar energy driven atmospheric water harvesting (AWH) process in a broad scientific and application context. The light-to-heat conversion process of solar photothermal materials was investigated first with a rationally designed droplet-laser system, which in combination with the calculation of heat of absorption of water vapor for various application scenarios, formed a theoretical basis of this dissertation research. As a result, a series of commonly used hydrated salts and their anhydrous counterparts were judiciously selected and successfully proven to be low-cost AWH materials to generate clean fresh water for arid regions. A hydrogel-deliquescent salt composite was further developed as AWH material with a significantly enhanced fresh water production capacity. A new design of nano-capsule encapsulated deliquescent salt was further put forward to enhance water vapor sorption/desorption kinetics, which enabled, for the first time, multiple sorption/desorption cycles within one day and thus multiplied water production capacity. The first-ever continuous AWH device, as opposed to batch-type one, was rationally designed, fabricated, and successfully tested in field conditions outdoors. At last, the dissertation pioneered a novel concept of atmospheric water sorption and desorption cycle for photovoltaic (PV) panel cooling. This dissertation shines significant light on sorption based atmospheric water harvesting and inspires more research efforts on this important research topic.