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dc.contributor.authorSuresh, T.
dc.contributor.authorTalaulikar, M.
dc.contributor.authorDesa, E.J.
dc.contributor.authorLotlikar, A.
dc.date.accessioned2016-07-11T11:43:04Z
dc.date.available2016-07-11T11:43:04Z
dc.date.issued2016
dc.identifier.citationProceedings of SPIE, vol. 9878, Remote Sensing of the Oceans and Inland Waters: Techniques, Applications, and Challengeses, 98780E; 2016; 8pp doi.: 10.1117/12.2235777
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/4994
dc.description.abstractAn algorithm to determine the spectral total absorption coefficient of water is presented. The algorithm is based on the Gershun’s equation of alfa = micro K<sub>E</sub>. The spectral underwater average cosine, micro and vertical attenuation coefficient of net irradiance, K<sub>E</sub> were obtained from radiative transfer simulations using Hydrolight with large in-situ measured data from the coastal and estuarine waters of Goa. A refined algorithm of spectral micro as in Ref. [1] is used to determine the spectral underwater average cosine. The spectral K<sub>E</sub> was related to the diffuse attenuation coefficient, K<sub>d</sub>. The algorithms to derive absorption were validated using an independent NOMAD optical data at wavelengths 412, 440, 488, 510, 532, 555, 650 and 676 nm. The performance of the algorithm was evident from the high R2, low bias and low RMSE. The values of R<sup>2</sup> at wavelengths 412, 440, 488, 510, 532, 555, 650 and 676 nm were 0.95, 0.95, 0.93, 0.93, 0.88, 0.82, 0.62, and 0.65 respectively. The corresponding bias were -0.0064, 0.0076, 0.0038, 0.0044, 0.0122, 0.0124, 0.0362, and 0.0093 respectively. The algorithms for micro and K<sub>E</sub> provide the spectral weighted average within Z<sub>90</sub> and have the advantage of deriving the absorption coefficients from the satellite data
dc.language.isoen
dc.publisherSociety of Photo-Optical Instrumentation Engineers
dc.rightsCopyright [2016]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectCHEMISTRY AND BIOGEOCHEMISTRY
dc.subjectOCEANOGRAPHY AND LIMNOLOGY
dc.subjectOCEANOGRAPHIC SUPPORT SERVICES
dc.subjectOCEANOGRAPHY AND LIMNOLOGY
dc.titlePreliminary results of an algorithm to determine the total absorption coefficient of water
dc.typeConference Article


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