Download or read book Bio Optical Properties of the Arabian Sea As Determined by In Situ and SeaWifs Data written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this work was to characterize optical and fluorescence properties in the euphotic zone during two British Ocean Flux Study (BOFS) Arabian Sea cruises. This was later expanded in 1995 to include three U.S. Joint Global Ocean Flux Study (JGOFS) Arabian Sea Cruises. The region was to be divided into one or more "bio-optical provinces", within each of which a single set of regression models was to be developed to relate the vertical distribution of irradiance attenuation and normalized fluorescence (SF and NF) to remote sensing reflectance and diffuse attenuation coefficient [K(490)]. The working hypothesis was that over relatively large spatial and temporal scales, the vertical profiles of bio-optical properties were predictable. Trees, Charles C. Unspecified Center CHORS-TM-004-97 NAGw-2154...

Download or read book Bio optical Properties of the Arabian Sea as Determined by in Situ and SeaWiFS Data written by C. C. Trees and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bio Optical Properties of the Arabian Sea As Determined by in Situ and Sea WiFS Data written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this work was to characterize optical and fluorescence properties in the euphotic zone during two British Ocean Flux Study (BOFS) Arabian Sea cruises. This was later expanded in 1995 to include three U.S. JGOFS Arabian Sea Cruises. The region was to be divided into one or more "bio-optical provinces," within each of which a single set of regression models was to be developed to relate the vertical distribution of irradiance attenuation and normalized fluorescence (SF and NF) to remote sensing reflectance and diffuse attenuation coefficient. The working hypothesis was that over relatively large spatial and temporal scales, the vertical profiles of bio-optical properties were predictable. The specific technical objectives were: (1) To characterize the vertical distribution of the inherent and apparent optical properties by measuring downwelling and upwelling irradiances, upwelling radiances, scalar irradiance of PAR, and beam transmissions at each station - from these data, spectral diffuse attenuation coefficients, irradiance reflectances, remote sensing reflectances, surface-leaving radiances and beam attenuation coefficients were determined; (2) To characterize the spectral absorption of total particulate, detrital, and dissolved organic material at each station from discrete water samples; (3) To describe the vertical distribution of photoadaptive properties in the water column by measuring profiles of stimulated (SF) and natural (NF) fluorescence and examining relationships between SF and NF as a function of diffuse optical depth, pigment biomass and primary productivity; and (4) To establish locally derived, in-water algorithms relating remote sensing reflectance spectra to diffuse attenuation coefficients, phytoplankton pigment concentrations and primary productivity, through intercomparisons with in situ measurements, for application to SeaWiFS data. Trees, Charles C. Unspecified Center NASA-CR-205485, NAS 1.26:205485, CHORS-...

Download or read book Optical Properties and Remote Sensing of Multicomponental Water Bodies written by Kh. I︠U︡ Arst and published by Springer Science & Business Media. This book was released on 2003-04-29 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The text covers the problems concerning optical properties and remote sensing of turbid and surface-polluted oceans and lakes. In four chapters Helgi Arst compares remote sensing data with data collected from similar examination of clean waters. Chapter 1 provides an overview of the main radiative and remote sensing characteristics and provides discussion on the properties of optically active substances (OAS) in the water and their variability and concentration, drawing on original data obtained in the Baltic Sea region. Chapter 2 focuses on the investigation of the influence of surface oil slicks on the reflection and absorption of solar radiation for both calm and ruffled sea surfaces. A model is provided for determining the temperature and the reflected component in upwelling rough seas. Chapter 3 provides remote sensing results obtained mainly for the Baltic Sea region, including some lakes. Correlations between the concentrations of OAS, water transparency and total remote sensing reflectance are investigated. Chapter 4 deals with subsurface irradiance and optical classification of turbid waters. This chapter analyses the different criteria of the euphotic depth, drawing on a semi-empirical model for the estimation of underwater light scattering. The conclusion provides discussion on the results obtained.

Download or read book Bio optical properties of the southwestern Ross Sea written by K.R. ARRIGO and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SeaWiFS Technical Report Series Volume 25 Ocean Optics Protocols for SeaWiFS Validation Revision 1 written by and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bio optical Properties and Its Application for Ocean Colour Algorithm in East Coast of Peninsular Malaysia Water written by Suffian B. Idris and published by . This book was released on 2012 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book In situ methods for measuring the inherent optical properties of ocean waters written by A. BRICAUD and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Properties and Remote Sensing of Inland and Coastal Waters written by Robert P. Bukata and published by . This book was released on 2018 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scale Closure in Upper Ocean Optical Properties written by Rebecca Erin Green and published by . This book was released on 2002 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The role of seawater constituents in determining remote sensing reflectance, Rrs, was determined using radiative transfer theory. Seasonal differences in the spectral shape of Rrs were contributed to approximately equally by eukaryotic phytoplankton absorption, dissolved absorption, and non-phytoplankton bb. A higher inverse wavelength dependence of non-phytoplankton bb in the summer was caused by the contribution of small detritus, in contrast to larger minerals in the spring. Measurements of bb and Rrs were compared to values from bio-optical models based on chlorophyll concentration. Differences in measured and modeled bb and Rrs were caused by higher dissolved absorption and higher backscattering efficiencies and scattering by non-phytoplankton than were assumed by the model.

Download or read book In s i tu Determination of Optical Properties of Seawater and Particle Characteristics in the Corfu Sea written by G. B. J. Dubelaar and published by . This book was released on 1992 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ocean Optics Protocols for Satellite Ocean Color Sensor Validation Revision 4 Volume IV written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document stipulates protocols for measuring bio-optical and radiometric data for the Sensor Intercomparision and Merger for Biological and Interdisciplinary Oceanic Studies (SIMBIOS) Project activities and algorithm development. The document is organized into 6 separate volumes as Ocean Optics Protocols for Satellite Ocean Color Sensor Validation, Revision 4. Volume I: Introduction, Background, and Conventions; Volume II: Instrument Specifications, Characterization and Calibration; Volume III: Radiometric Measurements and Data Analysis Methods; Volume IV: Inherent Optical Properties: Instruments, Characterization, Field Measurements and Data Analysis Protocols; Volume V: Biogeochemical and Bio-Optical Measurements and Data Analysis Methods; Volume VI: Special Topics in Ocean Optics Protocols and Appendices. The earlier version of Ocean Optics Protocols for Satellite Ocean Color Sensor Validation, Revision 3 is entirely superseded by the six volumes of Revision 4 listed above.Mueller, J. L. and Fargion, G. S. and McClain, C. R. (Editor) and Pegau, S. and Zanefeld, J. R. V. and Mitchell, B. G. and Kahru, M. and Wieland, J. and Stramska, M.Goddard Space Flight CenterWATER COLOR; PROTOCOL (COMPUTERS); OCEAN SURFACE; OCEANOGRAPHIC PARAMETERS; OCEAN COLOR SCANNER; SATELLITE OBSERVATION; OPTICAL MEASUREMENT; RADIOMETERS; DATA PROCESSING; OPTICAL PROPERTIES; ALGORITHMS

Download or read book Optical Properties as Tracers of Water Mass Structure and Circulation Patterns in the Japan East Sea written by and published by . This book was released on 2000 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the Japan (East) Sea DRI, our objectives are to coordinate research between US scientists at Scripps Institution of Oceanography, and scientists in Japan and Korea to characterize the detailed optical properties of different water masses in the JES, and to specify the variability in the properties and their potential use as water mass tracers using in situ optics and remote sensing. Our overall hypothesis is that the JES can be defined in terms of 5 optical provinces with characteristic inherent and apparent optical properties (IOPs and AOPs) related to optically important seawater constituents. The 5 optical provinces include the Kuroshio Current intrusion through the Tsushima Strait, the East Korea Warm Current which entrains water from the Yellow Sea, coastal regions of Japan south of the Tsugaru Strait, the northern, sub-polar waters of the Tsushima Basin and Japan Basin, and finally, coastal regions north of the Tsugaru Strait.

Download or read book Closure Between Apparent and Inherent Optical Properties of the Ocean with Applications to the Determination of Spectral Bottom Reflectance written by James Edward Ivey and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: This study focuses on comparing six different marine optical models, field measurements, and laboratory measurements. Inherent Optical Properties (IOPs) of the water column depend only on the constituents within the water, not on the ambient light field. Apparent Optical Properties (AOPs) depend both on IOPs and the geometric underwater light field resulting from solar irradiance. Absorption (a) and scattering (b) are IOPs. Scattering can be partitioned into backscattering (b[subscript b]). Remote Sensing Reflectance (R[subscript rs]), the ratio of radiant light leaving the water to the light entering the water surface plane (E[subscript d]), is an AOP. R[subscript rs] is proportional to b[subscript b]/(a + b[subscript b]). Using this relationship, R[subscript rs] is inverted to determine both absorption and backscattering. The constituents contributing to both absorption and backscattering can then be further deconvolved using modeling techniques. The in situ instruments usually have a fixed path length while AOP measurement path length depends on the penetration and/or return of downwelling solar irradiance. As a consequence, AOP measurements use a longer path length than in situ instruments. If the path length of a direct IOP measurement instrument is too short, there may not be sufficient signal to determine a change in value. While the AOP inversions require more empirical assumptions to determine IOP values than in situ instruments, they provide a higher signal to noise ratio in clearer waters. This study defines closure as the statistical agreement between instruments and methods in order to determine the same optical property. No method is considered absolute truth. An R[subscript rs] inversion algorithm was best under most of the test stations for measuring IOP values. One exception was when bottom reflectance was significant, an inversion of diffuse attenuation (the change in the natural log of E[subscript d] over depth) was better for determining absorption and a field instrument was better for determining backscattering. The relationships between AOPs and IOPs provide estimates of unmeasured optical properties. A method was developed to determine the spectral reflectance of the bottom using IOP estimates and R[subscript rs].

Download or read book Bio optical Characterization of the Salish Sea Canada Towards Improved Chlorophyll Algorithms for MODIS and Sentinel 3 written by Stephen Robert Phillips and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research was to improve ocean colour chlorophyll a (Chla) retrievals in the coastal Case 2 waters of the Salish Sea by characterizing the main drivers of optical variability and using this information to parameterize empirical algorithms based on an optical classification. This was addressed with three specific objectives: (1) build a comprehensive spatio-temporal data set of in situ optical and biogeochemical parameters, (2) apply a hierarchical clustering analysis to classify above-water remote sensing reflectance (Rrs) and associated bio-optical regimes, (3) optimize and validate class-specific empirical algorithms for improved Chla retrievals.

Download or read book Bio Optical Profile Data Report Coastal Transition Zone Program R V Point Sur June 15 28 1987 written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-27 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty vertical profiles of the bio-optical properties of the ocean were made during a research cruise on the R/V Point Sur, June 15 to 28, 1987, as part of the Coastal Transition Zone Program off Point Arena, California. Extracted chlorophyll values were also measured at some stations to provide calibration data for the in situ fluorometer. This summary provides investigators with an overview of the data collected. The entire data set is available in digital form. Davis, Curtiss O. and Rhea, W. Joseph Jet Propulsion Laboratory...

Download or read book Developing Ocean Color Remote Sensing Algorithms for Retrieving Optical Properties and Biogeochemical Parameters in the Optically Complex Waters of Long Island Sound written by Dirk Alexander Aukrin and published by . This book was released on 2010 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: