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 20 of 156 for “"stratosphere"”.
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Low-Frequency Variability in the Stratosphere
… observed low frequency variability (LFV) in the stratosphere with timescales on the order of hundreds of days. Time lagged correlations have revealed that this variability is linked to LFV in the emission of longwaves from the troposphere. A set of linear model experiments is performed to …
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Energy interaction between the troposphere and stratosphere
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1960.
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Higher Order Trapped Lee Waves in the Stratosphere
Wave activity with maximum amplitude in the stratosphere downstream of major mountain ranges has previously been explained as a result of wave breaking inducing secondary wave generation in the stratosphere (Vadas et al., 2003) or the vertical propagation of low-amplitude waves from below. However, …
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The energy budget of the stratosphere during 1965
… and energy budgets for three layers of the 1965 stratosphere. Geostrophic wind components were computed from IQSY data at 100, 50, 30 and 10 mb for use in calculating the statistical quantities -used in the analysis. It was found that temporal and spatial variances and covariances -computed from …
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Stratosphere - troposphere interaction during stratospheric sudden warming events
The stratosphere and the troposphere exhibit a strong coupling during the winter months. However, the coupling mechanisms between the respective vertical layers are not fully understood. An idealized spectral core dynamical model is utilized in the present study in order to clarify the coupling …
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Long period wind fluctuations in the tropical stratosphere.
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1966. Ph.D.
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Age of air and the circulation of the stratosphere
The circulation of air in the stratosphere is important for the distribution of radiatively important trace gases, such as ozone and water vapor, and other chemical species, including ozone-depleting chlorofluorocarbons. Age of air in the stratosphere is an idealized tracer with unique mathematical …
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The Dynamic Stability of The Stratosphere and Mesosphere (Atmosphere)
… the stability of zonal motions in the stratosphere and mesosphere. Two sets of calculations were performed.
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Radiative effects of carbon dioxide in the upper stratosphere,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1972.
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The energy budget of the middle and upper stratosphere.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1973.
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Age of air and the circulation of the stratosphere
The circulation of air in the stratosphere is important for the distribution of radiatively-important trace gases, such as ozone and water vapor, and other chemical species, including ozone-depleting chlorofluorocarbons. Age of air in the stratosphere is an idealized tracer with unique mathematical …
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Timescales of processes controlling water vapour entry to the stratosphere
… determining water vapour entry into the stratosphere in reanalysis and two global climate model configurations. This is done by applying the advection-condensation method and comparing alternative formulations. In the region of the atmosphere around 15–50 km altitude known as the …
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Dynamical and radiative processes in the Upper Troposphere/Lower Stratosphere
… 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 recently identified feature of the extratropical upper troposphere and lower …
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Ozone Chemistry in the Lower Stratosphere: Drivers, Trends, and Impacts
… anthropogenically driven chemical changes in the stratosphere by natural processes. It probes these questions on timescales that range from daily to decadal and on spatial scales ranging from a few kilometers to the global mean, and presents new results improving our understanding of both the …
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Vertical motion atlas for the lower stratosphere during the IGY.
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1965. M.S.
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Short meridional scale anomalies in the lower stratosphere and upper troposphere
… temperature structure shows maxima in the lower stratosphere and upper troposphere with a node between these maxima in the 200 to 400 mb region. The SMSA are not regularly propagating features. They are found to be episodic, with an episode lasting from 1 to 3 weeks;In addition to the temperature …
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SOME MIDDLE ULTRAVIOLET RADIATIVE EFFECTS OF PARTICULATE POLLUTION IN THE STRATOSPHERE
The effect of increased stratospheric dust on the polarization and intensity of sunlight scattered by the terrestrial atmosphere in the spectral region near the ultraviolet transmission cutoff is examined. Particular interest is given to radiation reflected to space or transmitted to the surface in …
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The Downward Influence of Ozone Depletion in the Arctic Lower Stratosphere
Severe ozone depletion in the polar lower stratosphere has been linked to significant changes in tropospheric circulation patterns in the both hemispheres. Observed Southern Hemisphere circulation changes are easily reproduced in climate models and may be achieved by either increasing ozone …
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Tracer-Independent Approaches to Stratosphere-Troposphere Exchange and Tropospheric Air Mass Composition
… The first addresses the interaction between the stratosphere and the troposphere. We perform the first analyses of stratosphere-troposphere exchange using one-way flux distributions; diagnostics are illustrated in both idealized and comprehensive contexts. By partitioning the one-way flux across …
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