Download or read book A Statistical Method for Determination of Chlorophyll Concentration from the Remotely Sensed Ocean Surface Albedo written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Reference Publication written by and published by . This book was released on 1977 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distributed Computing Model of Multispectral Time Series Data Analysis for Chlorophyll Concentration Determination Using Ocean Color Monitor 2 Data written by M. Prabu and published by . This book was released on 2018 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: In general, the ocean color monitor sensor (OCM) is used to identify and monitor the phytoplankton bloom and fishing zones. In the ocean, there is a food chain among plants and fish, and by calculating the normalized difference vegetation index (NDVI), we can identify chlorophyll concentration of the particular ocean area. NDVI is an indication of the presence of chlorophyll concentration. In this study, importance is given to the NDVI of ocean area, because our Earth is mostly occupied by the ocean in the sense of water. OCM sensor data are used to identify the chlorophyll, which in turn indicates the presence of phytoplankton. This is the primary production in the basic food chain, and also for the fishes. Remote sensing methodology is used to find and understand the spatial allocation of oceanwater constituents. Usually, the phytoplankton pigment emits a greenish color in the seawater, which is the visible region in the ocean. It enables plant objects to be identified from among the other suspended matter on the oceanwater. NDVI is mainly used in land applications to identify vegetation and forestation, and it is used to identify the chlorophyll pigment concentration of the ocean surface. Therefore, NDVI can be used to map chlorophyll-determined zones through which possible fishing zones can be generated. This study also shows that the NDVI generation technique is used to discover the resources of seawater for mapping the fishing zones. However, the limitation on large-scale computation for the entire earth surface leaves challenges toward raising the technological solution. Hence, an attempt is made to integrate a distributed computational model to cover the larger spatial data. Therefore, a grid-based satellite image processing system is designed to discover the chlorophyll pigment concentration on the ocean through NDVI generation. With multiple computing nodes of the configured grid, the spatial coverage on the oceanic surface is widened and computational speed is also improved to yield a promising outcome.
Download or read book Remote Sensing of Oceanic Parameters During the Skylab Gamefish Experiment written by Kenneth H. Faller and published by . This book was released on 1977 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remote Determination of Chlorophyll Concentration in the Ocean Using an Optical Pulse Radar written by I. M. Levin and published by . This book was released on 1988 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Measurement of Particle and Chlorophyll Concentration in Water Using the Multi Scattering Model written by Y. Sugahara and published by . This book was released on 1982 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors studied an analytical method to estimate chlorophyll and particle concentration in turbid water using MSS data collected after a heavy rain. The authors introduced the Multi Scattering Model into the analytical method. It was found that the analytical method employing the Multi Scattering Model was more effective than the method using statistical analysis which uses the relation between sea truth data and remote sensing data for estimating chlorophyll pigment concentrations. The method employing the Multi Scattering Model requires a number of sea truth data, but this number is less than the number required for the method employing the statistical analysis. (Author).
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:
Download or read book Application Potentials of the Nimbus 7 Coastal Zone Color Scanner Remote Sensed Data to Coastal Fisheries written by Chaoqin Chen and published by . This book was released on 1981 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ocean Optics Protocols for Satellite Ocean Color Sensor Validation Revision 4 written by and published by . This book was released on 2003 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing the Requirements for Sustained Ocean Color Research and Operations written by National Research Council and published by National Academies Press. This book was released on 2011-12-15 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ocean is a fundamental component of the earth's biosphere. It covers roughly 70 percent of Earth's surface and plays a pivotal role in the cycling of life's building blocks, such as nitrogen, carbon, oxygen, and sulfur. The ocean also contributes to regulating the climate system. Most of the primary producers in the ocean comprise of microscopic plants and some bacteria; and these photosynthetic organisms (phytoplankton) form the base of the ocean's food web. Monitoring the health of the ocean and its productivity is critical to understanding and managing the ocean's essential functions and living resources. Because the ocean is so vast and difficult for humans to explore, satellite remote sensing of ocean color is currently the only way to observe and monitor the biological state of the surface ocean globally on time scales of days to decades. Ocean color measurements reveal a wealth of ecologically important characteristics including: chlorophyll concentration, the rate of phytoplankton photosynthesis, sediment transport, dispersion of pollutants, and responses of oceanic biota to long-term climate changes. Continuity of satellite ocean color data and associated climate research products are presently at significant risk for the U.S. ocean color community. Assessing Requirements for Sustained Ocean Color Research and Operations aims to identify the ocean color data needs for a broad range of end users, develop a consensus for the minimum requirements, and outline options to meet these needs on a sustained basis. The report assesses lessons learned in global ocean color remote sensing from the SeaWiFS/MODIS era to guide planning for acquisition of future global ocean color radiance data to support U.S. research and operational needs.
Download or read book The SAGE Handbook of Remote Sensing written by Timothy A Warner and published by SAGE. This book was released on 2009-06-18 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: ′A magnificent achievement. A who′s who of contemporary remote sensing have produced an engaging, wide-ranging and scholarly review of the field in just one volume′ - Professor Paul Curran, Vice-Chancellor, Bournemouth University Remote Sensing acquires and interprets small or large-scale data about the Earth from a distance. Using a wide range of spatial, spectral, temporal, and radiometric scales Remote Sensing is a large and diverse field for which this Handbook will be the key research reference. Organized in four key sections: • Interactions of Electromagnetic Radiation with the Terrestrial Environment: chapters on Visible, Near-IR and Shortwave IR; Middle IR (3-5 micrometers); Thermal IR ; Microwave • Digital sensors and Image Characteristics: chapters on Sensor Technology; Coarse Spatial Resolution Optical Sensors ; Medium Spatial Resolution Optical Sensors; Fine Spatial Resolution Optical Sensors; Video Imaging and Multispectral Digital Photography; Hyperspectral Sensors; Radar and Passive Microwave Sensors; Lidar • Remote Sensing Analysis - Design and Implementation: chapters on Image Pre-Processing; Ground Data Collection; Integration with GIS; Quantitative Models in Remote Sensing; Validation and accuracy assessment; • Remote Sensing Analysis - Applications: LITHOSPHERIC SCIENCES: chapters on Topography; Geology; Soils; PLANT SCIENCES: Vegetation; Agriculture; HYDROSPHERIC and CRYSOPHERIC SCIENCES: Hydrosphere: Fresh and Ocean Water; Cryosphere; GLOBAL CHANGE AND HUMAN ENVIRONMENTS: Earth Systems; Human Environments & Links to the Social Sciences; Real Time Monitoring Systems and Disaster Management; Land Cover Change Illustrated throughout, an essential resource for the analysis of remotely sensed data, the SAGE Handbook of Remote Sensing provides researchers with a definitive statement of the core concepts and methodologies in the discipline.
Download or read book Ocean Chlorophyll Studies from a U 2 Aircraft Platform written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Chlorophyll gradient maps of large ocean areas were generated from U2/OCS data obtained over test sites in the Pacific and Atlantic Oceans. The delineation of oceanic features using the upward radiant intensity relies on an analysis method which presupposes that radiation backscattered from the atmosphere and ocean surface can be properly modeled using a measurement made at 778 nm. The calculation of atmospheric radiance was performed using a method developed by J.V. Dave. An estimation of the chlorophyll concentration is performed by properly ratioing radiances measured at 472 nm and 548 nm after removing the atmospheric effects. The correlation between the remotely sensed data and in-situ surface chlorophyll measurements has been validated in two sets of data. The results show that the correlation between the in-situ measured chlorophyll and the derived quantity is a negative exponential function and the correlation was calculated to be -0.965.
Download or read book Determination of Chlorophyll a Concentration from Seawifs Data in the South China Sea written by Arnis Asmat and published by . This book was released on 2001 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of satelite remote sending to provide synoptic measurement of the ocean is becoming increasingly important in the fishing industry. The evolving capabilities of satelite sensors and data processing techniques provide a promising tool towards the development of fish forecasting and management techniques. Mapping phytoplankton distribution and growth are important in fisheries and physical oceanographic studies. The light absorbing pigments collectively known as chorophyll-a are commonly used by oceanographers as an index of phytoplankton concentration. The objectives of this study is to measure the concentration of chlophyll-a in the Exclusive Economic Zone (EEZ) of East Coast Peninsular Malaysia, based on remodely sensed data. In order to achieved this objective it is essential to determine an empirical relation between the chlorophyll-a and the radiances values recorded by the sensor and to measure the concentration chlorophyll-a from remotely sensed data. This study used in-situ data of concentration chlorophyll-a to measure the concentration of chlorophyll-a from SeaWiFS data. Models to estimate the chlorophyll-a concentration were generated by computing based on empirical method using radiance ratio of SeaWiFS channels. The data from the sea truth campaigned of 24th August 200 until 29th August 2000 were applied to obtain the correlation between chlorophyl-a concentration (mg/m3) and the radiance values in chosen channel of SeaWiFS. The amount of concentration of chlorophyll-a was calculated based on blue, blue-green and green (442nm, 490 nm, and 555nm) reflectance ratios, this was done by selecting representive radiance values corresonding to in-situ data measurement. The study proved that the remote sensing technique is a very useful tool for studying chlorophyll-a distribution an a large water body area such as the EEZ. In this work, channel 2, channel 3 and channel 5 of SeaWiFS data have been found to be the most suitable channel to extract the chlorophyll-a concentration. Correlation analysis between remotely sensed data and chlorophyll-a in-situ data indicates the possibility of mapping chlorophyll-a concentration with some degrees of succes. The strong correlation of radiance ratio corresponding to above channel with in-situ data provides the basis for the development of equation and constant for the estimation of chlorophyll-a concerntration in South China Sea. The results show that the empirical model has significantly highest correlation to the in-situ data. SeaWiFS level 1 data gives correlation of r2=0.6882 and level 2 data gives correlation of r2=0.6677. The ratio betwwen channel 2, channel 3 and channel 5 shows good combination to extract chlorophyll-a from SeaWiFS data. SeaWiFS data, ratio derived using blue channel (443nm), blue0green channel (490) and green channel (555nm) was used to extract the chlorophyll-a concentration from SeaWiFSdata. the ratio of (R443 - R555 / R490) was used for implementing the empirical algorithm ( linear regression) and Morel algorithm. For SeaBAM algorithm, the ratio of log10 (R443 / R555) was applied. The Morel and SeaBAM algorithms were modified to suit the tropical area. From this study, it can be concluded that remote sensing techniques with suitable extracting chlorophyll-a concentration algorithm offers a useful technique for estimating of chlorophyll-a concentration in study area.
Download or read book Japanese Science and Technology 1983 1984 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and published by . This book was released on 1985 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Remote Sensing written by Shunlin Liang and published by Academic Press. This book was released on 2012-08-17 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Remote Sensing is an application-based reference that provides a single source of mathematical concepts necessary for remote sensing data gathering and assimilation. It presents state-of-the-art techniques for estimating land surface variables from a variety of data types, including optical sensors such as RADAR and LIDAR. Scientists in a number of different fields including geography, geology, atmospheric science, environmental science, planetary science and ecology will have access to critically-important data extraction techniques and their virtually unlimited applications. While rigorous enough for the most experienced of scientists, the techniques are well designed and integrated, making the book's content intuitive, clearly presented, and practical in its implementation. Comprehensive overview of various practical methods and algorithms Detailed description of the principles and procedures of the state-of-the-art algorithms Real-world case studies open several chapters More than 500 full-color figures and tables Edited by top remote sensing experts with contributions from authors across the geosciences
Download or read book Water surface Chlorophyll Detection by Remote Sensing and Vertical Structure of Chlorophyll Analysis in Lake Superior written by Yuhu Yan and published by . This book was released on 2006 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
