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 45 for “"passive microwave"”.
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PASSIVE MICROWAVE SATELLITE SNOW OBSERVATIONS FOR HYDROLOGIC APPLICATIONS
… research was to investigate the potential for passive microwave remotely sensed data to characterize snow water equivalent (SWE) and snowmelt across diverse regions and snow regimes to improve snowmelt runoff estimation. The first step was to evaluate the current, empirically-based passive …
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Temperature profile retrievals with the NAST-M passive microwave spectrometer
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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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
… 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 first instrument is a medium-resolution dual-band …
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The Study of Weddell Sea Ice using passive microwave and buoy data
… using Nimbus-7 satellite Scanning Multi-channel Microwave Radiometer (SMMR) data in combination with data (positional, air temperature and atmospheric pressure) from 4 Nimbus-tracked drifting buoys. Ice concentrations are retrieved from the SMMR data by applying a cluster analysis algorithm …
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Rotational Transformation Methods for Radio Occultation and Passive Microwave Radiometry Colocation Analysis
… Satellite System Radio Occultation (GNSS-RO) and passive microwave radiometry (MWR) provide useful atmospheric profiles for inputs into Numerical Weather Prediction models. However, both remote sensing techniques face unique challenges that require auxiliary atmospheric data to mitigate. GNSS-RO …
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Sampling error and environmental noises in passive microwave rainfall retrieval from space
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Potential for tsunami detection and early-warning using space-based passive microwave radiometry
… deep ocean is proposed using a new space-based passive microwave radiometer system. Passive microwave radiometry can detect oceanic parameters such as sea-surface temperature and sea surface roughness to contribute to earlier tsunami detection, when the tsunami is farther from shore, which will …
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Geophysical parameter estimation with a passive microwave spectrometer at 54 / 118 / 183 / 425 GHz
(cont.) model of a convective cell is presented that provides a physical basis for this relationship.
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Convective structure and its evolution in tropical cyclones as observed by passive microwave sensors in relation to intensity change
The use of passive microwave sensors in analysis of tropical cyclones provide unique insight into the microphysical attributes and system structure opposed to other instruments that are only able to detect information about the cloud top. With the ability to infer information about key …
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Multi-Satellite Remote Sensing of Land-Atmosphere Interactions: Advanced Data-Driven Methodologies for Passive Microwave Retrievals of Flood and Precipitation
… observations from optical, short-infrared, and microwave bands, thereby allowing the detection under all-sky (clear and cloudy) conditions. Last, this dissertation quantifies the effects of snow cover, particularly the snow depth, on the radiometric signal of snowfall in an attempt to mitigate …
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Estimation de la superficie du couvert nival à partir d'une combinaison des données de télédétection MODIS et AMSR-E dans un contexte de prévision des crues printanières au Québec
… by cloud cover and incoming solar radiation. Passive microwave remote sensing is complementary by its near-transparence to cloud cover and independence to incoming solar radiation, but is limited by its coarse spatial resolution. The study aims to create an improved SCA product from blended …
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An Ocean Surface Wind Vector Model Function For A Spaceborne Microwave Radiometer And Its Application
… global ocean wind speeds have been obtained from passive microwave radiometers. Also, vector ocean surface wind data were primarily obtained from several scatterometry missions that have flown since the early 1990's. However, other than SeaSat-A in 1978, there has not been combined active and …
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Storm-wide precipitation retrievals
… based radar systems, and visible, infrared, and passive microwave sensors in orbiting satellites. This research project uses data from the Advanced Microwave Sounding Unit (AMSU-A and AMSU-B) which consists of passive microwave sensors that collect data in the opaque water vapor and oxygen …
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Design and development of an airborne microwave radiometer for atmospheric sensing
Satellite-based passive microwave remote sensing is a valuable tool for global weather monitoring and prediction. This thesis presents the design and development of a low-cost airborne weather sensing instrument to independently validate a satellite-based sensor platform. The NPOESS Aircraft …
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Land Surface Phenologies and Seasonalities Using Cool Earthlight in Temperate and Tropical Croplands
… needed. Land surface parameters derived from the passive microwave Advanced Microwave Scanning Radiometer on EOS (AMSR-E) and AMSR2 data enable monitoring of cropland dynamics and they can complement visible to near infrared (VNIR) and thermal infrared (TIR) data. Passive microwave data are less …
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Review of current radiometer technology with suggestions for future South African satellites
… the forms of electro-magnetic remote sensing is microwave radiometry. This dissertation presents a short review of currently available space-faring radiometer technologies and applications, which are then discussed in the context of today's South Africa. For instance Passive Microwave Radiometers …
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Characterization of the role of precipitation in tropical cyclone intensification
… have been put forth based upon space-borne passive microwave records. Furthermore, studies have suggested multiple archetypical structural modes dependent upon environmental wind shear associated with the most extreme intensification events, known as rapid intensification (RI). Here two …
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Calibration and validation for CubeSat Microwave Radiometers
Miniaturized microwave radiometers deployed on nanosatellites in Low Earth Orbit (LEO) are now demonstrating the ability to provide science-quality weather measurements. For instance, the Micro-sized Microwave Atmospheric Satellite-2A (MicroMAS-2A) is a 3U CubeSat launched in January 2018 that …
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