Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"upper troposphere and lower stratosphere"”.
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An Investigation of the Distribution of Ozone-depleting Substances in the Upper Troposphere and Lower Stratosphere
… transport in global circulation models and chemistry-climate models is an important component in simulating the recovery of the ozone layer as well as changes in the climate system. The Brewer-Dobson Circulation is not well constrained by observations and further investigation is …
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Post-combustion emissions control for aero-gas turbine engines
… x] emissions have an impact on air quality and climate change, where the latter is magnified due to the higher sensitivity of the upper troposphere and lower stratosphere. In the aviation industry, efforts to increase the efficiency of propulsion systems are giving rise to higher overall …
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Limb scatter measurements of high altitude cloud distributions
… influence on the Earth's hydrological cycle and climate system because they are intricately involved in the dynamical, chemical, and radiative processes within the upper troposphere and lower stratosphere. Cirrus clouds occur at high altitude around the tropopause level and, despite their …
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Determining Best Method For Estimating Observed Level Of Maximum Convective Detrainment Based On Radar Reflectivity
… of mass from near the surface up to the upper troposphere and lower stratosphere (UTLS) by a deep convective updraft. This transport can alter the chemical makeup and water vapor balance of the UTLS, which can affect cloud formation and the radiative properties of the atmosphere. It is …
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Study on impacts of aviation emissions and related dynamics and chemistry
The continuing increase in demand for commercial aviation transport raises questions about the effects of resulting emissions on the environment. The upper troposphere and lower stratosphere (UTLS), where most of aviation emissions occur, plays an important role in climate and atmospheric …
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Dynamical and radiative processes in the Upper Troposphere/Lower Stratosphere
… aim of this thesis is to gain a better understanding of certain key attributes and processes in the Upper Troposphere/Lower Stratosphere (UTLS). This work involves exploring the interactions between radiation and dynamics which ultimately affect the destination of chemical constituents. A …
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Studies towards assessing the effects of aviation on climate
… climate. Aviation emissions modify the chemical and physical properties of the upper troposphere and lower stratosphere (UTLS) in various ways. Aircraft emit gases and particles that can either directly or indirectly affect climate and air quality, including: carbon dioxide (CO2); nitrogen oxides …