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 26 for “"Atmospheric Water vapor"”.
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Infrared heat transfer by atmospheric water vapor
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1961.
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A Fiber-Based Lidar System for Atmospheric Water Vapor Measurement
… system has the potential to provide autonomous water vapor measurements with high resolution and accuracy. In addition, relatively low-cost mass-production and operation of the system is feasible. This dissertation first describes the design decisions and trade-offs made in the initial design of …
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Atmospheric water vapor transport and the hydrology of North America.
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1966. Ph.D.
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Studies of atmospheric water vapor by means of passive microwave techniques
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1967. Ph.D.
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Passive microwave and hyperspectral infrared retrievals of atmospheric water vapor profiles
Two clear-air relative humidity profile estimators were designed and implemented using neural networks. The microwave estimator is the first to utilize 54-, 118-, and 183-GHz channels for simultaneously retrieving a relative humidity profile. It utilizes 2 separate instruments simultaneously. The …
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Global atmospheric water vapor flux climatology in the NCEP/NCAR reanalysis and the Oort data set
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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The Isotopic Composition of Water Vapor in the Upper Troposphere/Lower Stratosphere Region : Modeling, Analysis and Sampling
The isotopic composition of water vapor in the upper troposphere/lower stratosphere:} Exact knowledge about the isotopic composition of water vapor in the tropopause region and the stratosphere provides important information for the understanding of atmospheric transport and photochemistry. The …
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Estimating evapotranspiration from the Amazon Basin using the atmospheric water balance
… at others, trees experience evident dry season water limitation. However, the few sites investigated are inadequate to characterize the conditions of transpiration throughout the basin. As a result of this uncertainty in modeling trees' access to deep soil moisture, land surface models cannot …
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Estimating the water budget of extratropical cyclones with the precipitation efficiency
Estimating the water budget of three mid-latitude extratropical cyclones is attempted from the perspective of the precipitation efficiency (PE), using a method proposed for the study of convective columns. Using a lagrangian, system-relative volume centered on the surface low pressure, each cyclone …
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Environmental errors in use of the airborne infrared radiation thermometer to measure sea-surface temperature
… absorption and emission of infrared energy by atmospheric water vapor are the important physical phenomena which cause IRT error. The results suggest that with increasing values of the combination of sea level mixing ratio and air temperature, IRT error decreases. An attempt is made to explain …
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Reliability and Mode Behavior of AlGaAs-GaAs-InGaAs Quantum Well Heterostructure Lasers
… years of hydrolyzation in ambient conditions of atmospheric water vapor and temperature. The evaluation after 5+ years shows that a quick ""sealing"" oxidation prevents destructive hydrolyzation. Data are presented on current-injected and photopumped vertical cavity surface emitting lasers. …
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Laserstrahlquellen auf Basis eines neuartigen Neodym-dotierten Mischgranats für Wasserdampf-DIAL-Systeme bei 935 nm
… of certain trace gases in the atmosphere like water vapor using the Differential Absorption LIDAR (DIAL) technique pulsed single frequency laser sources are required which can be tuned to certain absorption lines of that gas. A special set of four wavelengths between 935.561 and 935.906 nm is …
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Determination of Bragg Scatter in an Aircraft Generated Wake Vortex System for Radar Detection
… the index of refraction variations due to the atmospheric water vapor and potential temperature fields being mixed by the wake vortex system. Refractive index variations of the size that correspond to half the operating radar wavelength produce the observed radar return. Previous analysis has …
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Investigation of water vapor effects on the detection of nitric acid vapor with the tungstic acid technique
… used to measure gaseous HNO₃ in the presence of water vapor. The TAT is based on the diffusion of gaseous HNO₃ to the interior walls of a tube coated with tungsten VI oxide (WO₃), where it is selectively chemisorbed. The collected HNO₃ sample is thermally desorbed from the WO₃ surface, as NO, and …
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Diagnostic studies of ECHAM GCMs
… scheme, the treatment of radiation absorption by water vapor and cloud water and the calculation methods of advection of water vapor and cloud water, etc. It is shown that the simulation of annual mean heat balance at ocean surface has been greatly improved in ECHAM4 T106 with respect to the GEBA …
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ISOTOPIC CONSTRAINTS ON ATMOSPHERIC MOISTURE TRANSPORT PROCESSES IN SOUTH AMERICA
The water cycle in the tropics and subtropics exerts a strong influence on Earth's climate. Isotopic ratios in modern water vapor can provide us with insights into low-latitude moisture-transport processes in the modern climate system, recorded in paleoclimate proxy records, and in general …
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On tropospheric rivers
In this thesis, we investigate atmospheric water vapor transport through a distinct synoptic phenomenon, namely, the Tropospheric River (TR), which is a local filamentary structure on a daily map of vertically integrated moisture flux. Firstly, an automated procedure for identifying and tracking …
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Variations in the stable isotope compositions of water vapor and precipitation in New Mexico : links to synoptic-scale weather
The D content of atmospheric water vapor over Albuquerque, New Mexico was measured for 30 months with air samples captured one to three times daily on the roof of a three story building. In addition, the D and O isotopes for 106 samples of surface water vapor and 40 samples of precipitation from …
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Effects of Aerosol on Cloud Water Path: Statistical Method a Potential Source for Divergence in Observation-based Correlative Studies
… to assess the correlation between cloud water path (CWP) and aerosol optical depth (AOD) using MODIS Aqua retrieved aerosol and cloud properties for regions dominated by different types of aerosol: Non Absorbing Aerosol Dominated Region over land (NAADR_Land), Non Absorbing Aerosol …
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Physical mechanisms controlling self-aggregation of convection in idealized numerical modeling simulations
… a single cluster. Specifically, the System for Atmospheric Modeling is used to perform 3-d cloud system resolving simulations of radiative-convective equilibrium in a non-rotating framework, with interactive radiation and surface fluxes and fixed sea surface temperature. Self-aggregation only …
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