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 144 for “"mid-latitude"”.
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Theoretical studies of the mid-latitude ionosphere
Following a brief description of the atmosphere and ionosphere in Chapter I we describe how the equations of continuity and momentum for 0+, H+, He+, 0++ are derived from the formulations of St-Maurice and Schunk(1977) and Quegan et al.(1981) in Chapter II. In Chapter III we investigate the nature …
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Mesoscale Ensemble Prediction of Mid-Latitude Cyclones
… and lateral boundary uncertainties present in mid-latitude cyclone prediction. The use of separate ensemble subsets permitted direct comparison of the contributions from different uncertainty sources. Through the examination of the ensemble prediction results for cyclone central pressure, …
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Observation and simulation of mid-latitude ice clouds
… system (MCS) sampled on 20 May 2011 during the Mid-latitude Continental Convective Clouds Experiment. Inter-comparison studies are conducted with 3 different spectral bin microphysics schemes: the Caltech-NCAR-NOAA Bin scheme (CNNB), the Fast Spectral Bin Model (FSBM) and the University of Pecs …
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Isentropic diagnostics of mid-latitude circulation and transport
This thesis examines the mid-latitude circulation and tracer transport using zonal average isentropic diagnostics. The Underworld (i.e. the region roughly below the 300K-isentrope) is targeted by our research. Currently, there is a lack of rigorous and consistent theoretical formalism to deal with …
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A mechanistic model for mid-latitude mean temperature structure
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1979.
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Seasonal wind variations in the mid-latitude neutral thermosphere.
Thesis. 1977. Sc.D.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Physical Controls on Low and Mid-Latitude Marine Primary Productivity
… inhibit marine primary productivity at low and mid latitudes, based on the supposition that increased water column stability will decrease vertical mixing and consequently the upward entrainment of deep nutrients into the euphotic zone. Herein, we examine the local stratification control of …
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The effects of volcanic aerosols on mid-latitude ozone recovery
… (SD-WACCM), the impacts of volcanic aerosols on mid-latitude ozone loss are investigated. These results are compared to the ozone column expected recovery from a run of SD-WACCM with no volcanic eruptions in the same period. Particular emphasis is placed on the last decade to investigate how the …
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Analysis of Refractive Effects on Mid-Latitude SuperDARN Velocity Measurements
… refractive index values have been determined at mid latitudes using frequency switched SuperDARN plasma convection velocity estimates. Previous works have found a disparity between high latitude SuperDARN plasma convection velocities and those made by other devices. It was noted that the …
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Seasonal oscillations in a mid-latitude ocean with barriers to deep flow
… model is used to study the response of the mid-latitude ocean to the seasonal variation of the windstress. The most important component of the response is a barotropic quasi-steady Sverdrup balance. A meridional ridge such as the Antilles Arc is modeled as an infinitely thin meridional …
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HF Radar Observations of Inter-Annual variations in Mid-Latitude Mesospheric Winds
… important source of inter-annual variability at mid and high latitudes in both hemispheres. Coupling between QBO and the polar vortex has been extensively studied over the past few decades, however, less is known about QBO influences in the mid-latitude mesosphere. One reason for this is the …
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The vertical temperature structure of the mid-latitude troposphere : a simple model.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Seasonal oscillations in a mid-latitude ocean with barriers to deep flow.
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Modification of Precipitation in Mid-Latitude Cyclones Passing over a Coastal Mountain Range
As mid-latitude cyclones pass over a coastal mountain range, the processes producing their clouds and precipitation are modified, leading to considerable spatial variability in precipitation amount and composition. Surface, radar, and aircraft observations from the 2015-16 Olympic Mountains …
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Vertical eddy heat fluxes and the temperature structure of the mid-latitude troposphere
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1984.
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An examination of ionospheric plasma irregularities detected by the mid-latitude SuperDARN radars
The data from the new mid-latitude radars of the Super Dual Auroral Radar Network (SuperDARN) provide new types of challenges and observations. We have developed a method for identifying periods of ionospheric backscatter that increase the number of data and reduce the average velocity in agreement …
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SuperDARN Data Simulation, Processing, Access, and Use in Analysis of Mid-latitude Convection
… fitting algorithm. The construction of the new midlatitude SuperDARN chain has revealed that nighttime, quiet-time plasma irregularities with low Doppler velocity and spectral width are a very common (> 50% of nights) occurrence. Following on previous work, we have conducted a study of nighttime …
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Investigating Elevated Aqua Modis Aerosol Optical Depth Retrievals Over The Mid-Latitude Southern Oceans
… of elevated aerosol optical depth (AOD) over the mid-latitude Southern Oceans has been identified in some passive satellite-based aerosol datasets such as Moderate Resolution Imaging SpectroRadiometer (MODIS) and Multi-angle Imaging SpectroRadiometer (MISR) products. In this study, Aqua MODIS (AM) …
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