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Global Observations Of Ocean Surface Winds And Waves Using Spaceborne Synthetic Aperture Radar Measurements
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Book Synopsis Global Observations of Ocean Surface Winds and Waves Using Spaceborne Synthetic Aperture Radar Measurements by : Huimin Li
Download or read book Global Observations of Ocean Surface Winds and Waves Using Spaceborne Synthetic Aperture Radar Measurements written by Huimin Li and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spaceborne synthetic aperture radar (SAR) has been demonstrated invaluable in observing the global ocean winds and waves. SAR images acquired by multiple sensors are employed, including Sentinel-1(S-1), Envisat/ASAR, Gaofen-3 and Radarsat-2. This thesis reviews the commonly used SAR parameters (NRCS and azimuth cutoff) in the first part. A series of calibration steps are required to obtain a proper NRCS and assessment of NRCS is carried out for S-1wave mode (WV). It turns out that WV is poorly calibrated and is thus re-calibrated to obtain accurate NRCS. Azimuth cut off is demonstrated to be complementary to NRCS and can account for the sea state impact on the wind retrieval. Based on the available fully polarimetric SAR products, azimuth cut off is found to vary greatly with polarizations. The present SAR mapping transformation is sufficient to interpret the co-polarized azimuth cut off, while not for the cross-polarization. With the limitations of SAR imaging in mind, a new parameter is proposed and defined based on the SAR image cross-spectra, termed as MACS. The imaginary part of MACS is found to be a signed quantity relative to the wind direction. Given this dependence, an independent wind retrieval algorithm is expected to benefit. The magnitude of MACS is able to aid for estimate of modulation function of SAR mapping. In addition, MACS also gives promising results regarding the global wave studies. The global signatures of MACS at various wave lengths are well representative of the winds distributions, spatially and seasonally. MACS of long waves shows greater values over the storm tracks while the shorter waves are mostly within the trader winds. These results are expected to help evaluate the model outputs and complement further studies of the global wave spectral climate. Data continuity in the coming 10 years shall extend the study towards longer duration.
Book Synopsis Measurement of Ocean Surface Winds by Seasat Synthetic Aperture Radar by : J. D. Lyden
Download or read book Measurement of Ocean Surface Winds by Seasat Synthetic Aperture Radar written by J. D. Lyden and published by . This book was released on 1983 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report investigates the feasibility of using Seasat Synthetic Aperture Radar (SAR) data for measuring ocean surface winds. An empirical model relating the received power of the L-band SAR to ocean surface wind conditions was evaluated. Results from this investigation indicate that past Seasat SAR wind studies could be biased due to the nature of the measurement techniques employed. In these past studies, densitometer measurements of output imagery were related to wind speed and direction. Because of a shifting of the Doppler spectrum location with latitude due to the earth's rotation and spacecraft attitude change, these measurements are valid only over short azimuthal distances. A theoretical correction was calculated and applied to the Seasat data, resulting in improved correlations with the surface wind speed. Additionally, a simplified measurement technique which did not involve explicit corrections for this Doppler shifting was developed. The results of this study are consistent with those of previous investigations, but yield additional insight into the angular dependence of the SAR backscatter and the accuracy of the technique.
Author :Christopher R. Jackson Publisher :National Environmental Satellite, Data, & Information Service ISBN 13 :9780160732140 Total Pages :464 pages Book Rating :4.7/5 (321 download)
Book Synopsis Synthetic Aperture Radar by : Christopher R. Jackson
Download or read book Synthetic Aperture Radar written by Christopher R. Jackson and published by National Environmental Satellite, Data, & Information Service. This book was released on 2004 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the types of information available from spaceborne images of the ocean.
Book Synopsis Satellites, Oceanography and Society by : D. Halpern
Download or read book Satellites, Oceanography and Society written by D. Halpern and published by Elsevier. This book was released on 2000-06-06 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book shows how the new observations from satellites required advances in theory and influenced societal decision-making. Chapters have a review with an extensive reference list, making the book an excellent source of information for biological and physical oceanographers and atmospheric scientists.A large range of state-of-the art applications of satellite data (altimeter, color, infrared radiometer, scatterometer, synthetic aperture radar) visible in regional-to-global scale ocean studies integrating satellite and in-situ measurements with circulation models are covered in the book. Subjects include forecasting of surface waves, both swell and windsea, and surface wind; El Niño/La Niña; exchange of water masses between ocean basins, Rossby waves; eddies and filaments; fisheries; coastal ocean dynamics; phytoplankton dynamics; and ideas to measure sea surface salinity.
Book Synopsis Spaceborne Synthetic Aperture Radar by : Diane L. Evans
Download or read book Spaceborne Synthetic Aperture Radar written by Diane L. Evans and published by . This book was released on 1995 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earth Resources written by and published by . This book was released on 1983 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Ocean Surface Waves Using Synthetic Aperture Radar by : Hany Mohamed Assal
Download or read book Measurements of Ocean Surface Waves Using Synthetic Aperture Radar written by Hany Mohamed Assal and published by . This book was released on 1981 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radar Imaging of the Ocean Waves by : Mikhail B. Kanevsky
Download or read book Radar Imaging of the Ocean Waves written by Mikhail B. Kanevsky and published by Elsevier. This book was released on 2008-09-15 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to studying the ocean with radar tools, in particular, with space radars. Being intended mainly for the scientists preoccupied with the problem (as well as senior course students), it concentrates and generalizes the knowledge scattered over specialized journals. The significant part of the book contains the results obtained by the author. Systematically collects and describes the approaches used by different laboratories and institutions Deals with the physics of radar imagery and specifically with ocean surface imagery Useful for students and researchers specializing in the area of ocean remote sensing using airborne or space-borne radars, both SAR and RAR
Book Synopsis Statistical Analysis of Global Ocean Wave and Wind Parameters by : Guiting Song
Download or read book Statistical Analysis of Global Ocean Wave and Wind Parameters written by Guiting Song and published by LAP Lambert Academic Publishing. This book was released on 2011-04 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Almost all of the breakthroughs in understanding the ocean have been initiated by observations, using a range of instrumental techniques. Nowadays, satellite application is a good answer to the common requirement of meteorology and oceanography for comprehensive information on the ocean and atmosphere. Many different instruments have been installed on earth observation satellites. Among them the synthetic aperture radar (SAR) is the only instrument which up to now can provide high-resolution, two dimensional sea surface information on a global scale. Written as a comprehensive introduction to the techniques of SAR application into ocean for the oceanographic scientist, research student or undergraduate. It focuses on the systematic validation and comparison of met-ocean parameters like significant wave height, wind speed and mean wave period obtained from ERS SAR image using empirical algorithms, in situ and satellite observations, reanalysis and model results.
Book Synopsis Hurricane Monitoring With Spaceborne Synthetic Aperture Radar by : Xiaofeng Li
Download or read book Hurricane Monitoring With Spaceborne Synthetic Aperture Radar written by Xiaofeng Li and published by Springer. This book was released on 2017-05-17 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses in detail the science and morphology of powerful hurricane detection systems. It broadly addresses new approaches to monitoring hazards using freely available images from the European Space Agency’s (ESA’s) Sentinel-1 SAR satellite and benchmarks a new interdisciplinary field at the interface between oceanography, meteorology and remote sensing. Following the launch of the first European Space Agency (ESA) operational synthetic aperture radar satellite, Sentinel-1, in 2014, synthetic aperture radar (SAR) data has been freely available on the Internet hub in real-time. This advance allows weather forecasters to view hurricanes in fine detail for the first time. As a result, the number of synthetic aperture radar research scientists working in this field is set to grow exponentially in the next decade; the book is a valuable resource for this large and budding audience.
Book Synopsis Retrieval of Wind Velocity Vectors Over the Ocean Surface with Spaceborne Synthetic Aperture Radar by : Gisela Carvajal
Download or read book Retrieval of Wind Velocity Vectors Over the Ocean Surface with Spaceborne Synthetic Aperture Radar written by Gisela Carvajal and published by . This book was released on 2011 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measuring the Oceans from Space by : Ian S. Robinson
Download or read book Measuring the Oceans from Space written by Ian S. Robinson and published by Springer Science & Business Media. This book was released on 2004-06-30 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamental principles of measuring oceans from space, and also contains state-of-the-art developments in data analysis and interpretation and in sensors. Completely new will be material covering advances in oceanography that have grown out of remote sensing, including some of the global applications of the data. The variety of applications of remotely sensed data to ocean science has grown significantly and new areas of science are emerging to exploit the gobal datasets being recovered by satellites, particularly in relation to climate and climate change, basin-scale, air-sea interaction processes (e.g. El Nino) and the modelling, forecasting and prediction of the ocean.
Book Synopsis Nonlinear Ocean Dynamics by : Maged Marghany
Download or read book Nonlinear Ocean Dynamics written by Maged Marghany and published by Elsevier. This book was released on 2021-02-09 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear Ocean Dynamics: Synthetic Aperture Radar delivers the critical tools needed to understand the latest technology surrounding the radar imaging of nonlinear waves, particularly microwave radar, as a main source to understand, analyze and apply concepts in the field of ocean dynamic surface. Filling the gap between modern physics quantum theory and applications of radar imaging of ocean dynamic surface, this reference is packed with technical details associated with the potentiality of synthetic aperture radar (SAR). The book also includes key methods needed to extract the value-added information necessary, such as wave spectra energy, current pattern velocity, internal waves, and more. This book also reveals novel speculation of a shallow coastal front: named as Quantized Marghany's Front. Rounding out with practical simulations of 4-D wave-current interaction patterns using using radar images, the book brings an effective new source of technology and applications for today’s coastal scientists and engineers. Solves specific problems surrounding the nonlinearity of ocean surface dynamics in synthetic aperture radar data Helps develop new algorithms for retrieving ocean wave spectra and ocean current movements from synthetic aperture radar Includes over 100 equations that illustrate how to follow examples in the book
Book Synopsis Earth Resources: A Continuing Bibliography with Indexes (issue 61) by :
Download or read book Earth Resources: A Continuing Bibliography with Indexes (issue 61) written by and published by . This book was released on 1989 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space-based Remote Sensing of the Earth by :
Download or read book Space-based Remote Sensing of the Earth written by and published by . This book was released on 1987 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
