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 8 of 8 for “"Meridional Winds"”.
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Topographic Influence and Atmospheric Dynamics in the Indian Wells Valley
… strong synoptic scale increase in stability and meridional winds across the Sierra Nevada, a downslope windstorm can develop in IWV. The downslope winds and compensatory gravity wave activity over IWV will conclude once there is a significant change in conditions aloft, or an increase in …
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Fabry-Perot Observations of Midlatitude Neutral Winds and Atmospheric Gravity Wave Activity
… 96 km. The process of extracting the horizontal winds from the detected Doppler shifts and the resulting time series of the zonal and meridional winds at that altitude is presented. The winds at various nights as well as the average winds for two months were compared with the Horizontal Wind …
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Variability of summer rainfall over southwestern Madagascar
… SST, 850 hPa geopotential height, zonal and meridional winds at the surface. Composite anomalies of moisture flux and moisture flux convergence at 850 hPa, 500 hPa omega and velocity potential at .995 sigma level, using NCEP/NCAR reanalysis data, associated with El Niño events, La Niña events …
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Observations of the thermosphere using measurements from long-term Fabry-Perot interferometers
… is to analyze the nighttime thermospheric winds and temperatures from data collected by Fabry-Perot interferometers (FPI) operating in Brazil, the United States, and Morocco. These instruments observe the 630.0-nm redline emission and estimate the neutral parameters from the Doppler shift …
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Saturn’s Upper Atmosphere in the Ultraviolet: Temperature and Compositional Trends from Cassini UVIS with Implications for Energy Balance and Dynamics
… latitude at 0.1 microbar) than predicted. Meridional winds generated by ion drag showed peak equatorward speeds of 20–40 m/s. Gravity wave signatures in the thermosphere were analyzed to derive 2D fields of gravity wave drag. The addition of gravity wave drag reduced the speed of zonal jets …
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Automated Detection and Analysis of Low Latitude Nightside Equatorial Plasma Bubbles
… behave. Along with the ambient plasma, zonal and meridional thermospheric winds observed by ICON's Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument are analyzed in conjunction with the same EPBs to understand how winds coincident with EPBs behave. An …
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Drought in Southern Africa: structure, characteristics and impacts
… dominant. The vertical structure of zonal and meridional winds and vertical motion from the surface to 100 hPa exhibits enhanced subsidence in the area bounded by 18-38°E and between 10-30°S during drought seasons. This is a key finding as it shows that drought tends to be widespread over …
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Long-range Propagation, Interaction, and Dissipation of Small-Scale Gravity Waves in the Mesosphere and Lower Thermosphere
… was less likely when considering averaged meridional winds, and it is suggested that waves observed in the mesopause, far from the source region, may be the result of leakage from the stratosphere. It was also shown that leakage from the stratosphere over considerable horizontal distances …