Radiative Transfer Modeling In The Coupled Atmosphere Ocean System And Its Application To The Remote Sensing Of Ocean Color Imagery
Download Radiative Transfer Modeling In The Coupled Atmosphere Ocean System And Its Application To The Remote Sensing Of Ocean Color Imagery PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Radiative Transfer Modeling In The Coupled Atmosphere Ocean System And Its Application To The Remote Sensing Of Ocean Color Imagery book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages.
Radiative Transfer Modeling in the Coupled Atmosphere-ocean System and Its Application to the Remote Sensing of Ocean Color Imagery
"Ocean color is the radiance emanating from the ocean due to scattering by chlorophyll pigments and particles of organic and inorganic origin. Thus, it contains information about chlorophyll concentrations which can be used to estimate primary productivity. Observations of ocean color from space can be used to monitor the variability in marine primary productivity, thereby permitting a quantum leap in our understanding of oceanographic processes from regional to global scales. Satellite remote sensing of ocean color requires accurate removal of the contribution by atmospheric molecules and aerosols to the radiance measured at the top of the atmosphere (TOA). This removal process is called 'atmospheric correction.' Since about 90% of the radiance received by the satellitee sensor comes from the atmosphere, accurate removal of this portion is very important. A prerequisite for accurate atmospheric correction is accurate and reliable simulation of the transport of radiation in the atmosphere-ocean system. This thesis focuses on this radiative transfer process, and investigates the impact of particles in the atmosphere (aerosols) and ocean (oceanic chlorophylls and air bubbles) on our ability to remove the atmospheric contribution from the received signal. To explore these issues, a comprehensive radiative transfer model for the coupled atmosphere-ocean system is used to simulate the radiative transfer process and provide a physically sound link between surface-based measurements of oceanic and atmospheric parameters and radiances observed by satellite-deployed ocean color sensors. This model has been upgraded to provide accurate radiances in arbitrary directions as required to analyze satellite data. The model is then applied to quantify the uncertainties associated with several commonly made assumptions invoked in atmospheric correction algorithms. Since Atmospheric aerosols consist of a mixture of absorbing and non-absorbing components that may or may not be soluble, it becomes a challenging task to model the radiative effects of these particles. It is shown that the contribution of these particles to the TOA radiance depends on the assumptions made concerning how these particles mix and grow in a humid environment. This makes atmospheric correction a very difficult undertaking. Air bubbles in the ocean created by breaking waves give rise to scattered light. Unless this contribution to the radiance leaving the ocean is correctly accounted for, it would be mistakenly attributed to chlorophyll pigments. Thus, the findings in this thesis make an important contribution to the development of an adequate radiative transfer model for the coupled atmosphere-ocean system required for development and assessment of algorithms for atmospheric correction of ocean color imagery"--Leaves iii-iv.
Land Surface Remote Sensing in Urban and Coastal Areas
For a long time, the dynamics of urban and coastal areas have been the focus of administrators and decision makers in charge of public policy in order to better take into account anthropogenic pressure and the impact of climate change. This volume presents applications of remote sensing in urban environments and coastal zones, including the use of remote sensing in city planning (urban expansion, light pollution, air quality, etc.), observation of the properties of ocean color, the study of coastal dynamics (identifying coastlines and estimating sediment balances, etc.) and analysis of the dynamics of mangroves. This book, part of a set of six volumes, has been produced by scientists who are internationally renowned in their fields. It is addressed to students (engineers, Masters, PhD), engineers and scientists, specialists in remote sensing applied to the coastal environment and urban areas.Through this pedagogical work, the authors contribute to breaking down the barriers that hinder the use of Earth observation data. - Clear-and-concise descriptions of modern methods of remote sensing for a variety of applications - Explores the most current remote sensing techniques, with physical aspects of their measurement (theory) - Presents physical principles, measurement, and data processing chapters that are provided for each technique described
Remote Sensing of the Coastal Oceanic Environment
Author: Robert J. Frouin
language: en
Publisher: SPIE-International Society for Optical Engineering
Release Date: 2005
Proceedings of SPIE offer access to the latest innovations in research and technology and are among the most cited references in patent literature.