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 “"ocean winds"”.
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High Resolution Wind Retrieval for SeaWinds on QuikSCAT
… improved the resolution wind estimates from SeaWinds data. This thesis presents the development of three key portions of the high resolution wind retrieval algorithm: Compositing individual σ-0 measurements and Kp, Retrieved wind bias correction, and ambiguity selection for high resolution …
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A Methodology for the Design of Spaceborne Pencil-Beam Scatterometer Systems
… In addition to the primary goal of measuring ocean winds, data from scatterometers have proven useful in the study of a variety of land and cryopshere processes as well. Several satellites carrying scatterometers have flown in the last two decades. These previous systems have been "fan-beam" …
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Seasonality of the Agulhas Current with respect to near- and far-field winds
… plays a critical role in both local and global ocean circulation and climate regulation, yet the mechanisms that determine the seasonal cycle of the current remain poorly understood. Model studies predict an austral winter-spring maximum in poleward volume transport, whilst observations reveal …
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A Field-Wise Retrieval Algorithm for SeaWinds
… of 1999 NASA will launch the scatterometer SeaWinds, beginning a 3 year mission to measure the ocean winds. SeaWinds is different from previous spaceborne scatterometers in that it employs a rotating pencil-beam antenna as opposed to fixed fan-beam antennas. The scanning beam provides greater …
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Modelling large scale ocean circulation : the role of mixing location and meridional pressure gradients for the Atlantic overturning dynamics
… meridional overturning circulation (AMOC) in ocean models is a key task. In recent years, two paradigms have evolved around what are its driving mechanisms: diapycnal mixing and Southern Ocean winds. This work aims at clarifying what sets the strength of the Atlantic overturning components in …
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Mechanisms and prediction of climate variability in tropical North Africa
… Tropical Atlantic SST modes and Indian Ocean SST dipole influence tropical North Africa climate variability through the connection of Atlantic Circulation. The impacts of these SSTs are more pronounced during non-ENSO years as their influences are masked by global ENSO mode of …
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Underwater sound propagation and acoustic communication in a time-varying shallow estuarine environment
… are water regions that connect rivers and oceans, which are very important due to heavy traffic, fishery and other coastal engineering activities. Underwater acoustic technology offers a series of effective applications and technical supports for real-time monitoring and long-term …
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An Implementation of Field-Wise Wind Retrieval for Seawinds on QuikSCAT
… for field-wise wind retrieval for the SeaWinds scatterometer on the QuikSCAT satellite.</p> <p>Due to its sophistication, field-wise wind retrieval adds computational complexity and intensity. The tradeoffs necessary for practical implementations are examined and quantified. The …