MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI

Manila Bay is one of the most significant bodies of water in the Philippines; it has abundant natural resources that have been the source of livelihood and center of socio-economic development for centuries. However, Manila Bay is affected by multiple environmental problems and challenges. These inc...

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Autores principales:	A. Manuel, A. C. Blanco, O. Cabrera, M. L. San Diego-McGlone
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820
Acceso en línea:	https://doaj.org/article/4367f186138d49d2944aaa2b90a56721
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spelling	oai:doaj.org-article:4367f186138d49d2944aaa2b90a567212021-11-19T01:39:12ZMAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI10.5194/isprs-archives-XLVI-4-W6-2021-207-20211682-17502194-9034https://doaj.org/article/4367f186138d49d2944aaa2b90a567212021-11-01T00:00:00Zhttps://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLVI-4-W6-2021/207/2021/isprs-archives-XLVI-4-W6-2021-207-2021.pdfhttps://doaj.org/toc/1682-1750https://doaj.org/toc/2194-9034Manila Bay is one of the most significant bodies of water in the Philippines; it has abundant natural resources that have been the source of livelihood and center of socio-economic development for centuries. However, Manila Bay is affected by multiple environmental problems and challenges. These include increased organic and nutrient loading from untreated domestic, industrial, and agricultural wastes and deterioration of marine habitats threatened by anthropogenic activities. Regular water quality monitoring is ideal in these situations, however, sampling by traditional field methods would not be enough to assess the spatial and temporal variation of water quality in Manila Bay. Gathering field data for the whole bay can also be very challenging due to its extent and logistic constraints. Remote sensing fills the need for a frequent full view of Manila Bay’s water quality. This study makes use of existing bio-optical models to estimate colored dissolved organic matter (CDOM) in Manila Bay. CDOM is the mixture of organic molecules from decayed higher plants, algae, and bacteria, and is the colored portion of the total dissolved organic matter. Sentinel-3 images with concurrent field sampling on 19 July 2021 was used to calibrate and validate the bio-optical models implemented in WASI. The parameterization output showed an R<sup>2</sup> = 0.579 and RMSE of 1.274 m<sup>−1</sup> from lab-measured CDOM fluorescence converted to absorption. The same parameter set was used on a different image with a concurrent water quality survey on 19 May 2021 and resulted to an R<sup>2</sup> of 0.72 with the spectrofluorometer yellow substance concentrations.A. ManuelA. ManuelA. C. BlancoA. C. BlancoO. CabreraM. L. San Diego-McGloneCopernicus PublicationsarticleTechnologyTEngineering (General). Civil engineering (General)TA1-2040Applied optics. PhotonicsTA1501-1820ENThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVI-4-W6-2021, Pp 207-212 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820
spellingShingle	Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 A. Manuel A. Manuel A. C. Blanco A. C. Blanco O. Cabrera M. L. San Diego-McGlone MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI
description	Manila Bay is one of the most significant bodies of water in the Philippines; it has abundant natural resources that have been the source of livelihood and center of socio-economic development for centuries. However, Manila Bay is affected by multiple environmental problems and challenges. These include increased organic and nutrient loading from untreated domestic, industrial, and agricultural wastes and deterioration of marine habitats threatened by anthropogenic activities. Regular water quality monitoring is ideal in these situations, however, sampling by traditional field methods would not be enough to assess the spatial and temporal variation of water quality in Manila Bay. Gathering field data for the whole bay can also be very challenging due to its extent and logistic constraints. Remote sensing fills the need for a frequent full view of Manila Bay’s water quality. This study makes use of existing bio-optical models to estimate colored dissolved organic matter (CDOM) in Manila Bay. CDOM is the mixture of organic molecules from decayed higher plants, algae, and bacteria, and is the colored portion of the total dissolved organic matter. Sentinel-3 images with concurrent field sampling on 19 July 2021 was used to calibrate and validate the bio-optical models implemented in WASI. The parameterization output showed an R<sup>2</sup> = 0.579 and RMSE of 1.274 m<sup>−1</sup> from lab-measured CDOM fluorescence converted to absorption. The same parameter set was used on a different image with a concurrent water quality survey on 19 May 2021 and resulted to an R<sup>2</sup> of 0.72 with the spectrofluorometer yellow substance concentrations.
format	article
author	A. Manuel A. Manuel A. C. Blanco A. C. Blanco O. Cabrera M. L. San Diego-McGlone
author_facet	A. Manuel A. Manuel A. C. Blanco A. C. Blanco O. Cabrera M. L. San Diego-McGlone
author_sort	A. Manuel
title	MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI
title_short	MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI
title_full	MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI
title_fullStr	MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI
title_full_unstemmed	MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI
title_sort	mapping coloured dissolved organic matter in manila bay using sentinel-3 and wasi
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/4367f186138d49d2944aaa2b90a56721
work_keys_str_mv	AT amanuel mappingcoloureddissolvedorganicmatterinmanilabayusingsentinel3andwasi AT amanuel mappingcoloureddissolvedorganicmatterinmanilabayusingsentinel3andwasi AT acblanco mappingcoloureddissolvedorganicmatterinmanilabayusingsentinel3andwasi AT acblanco mappingcoloureddissolvedorganicmatterinmanilabayusingsentinel3andwasi AT ocabrera mappingcoloureddissolvedorganicmatterinmanilabayusingsentinel3andwasi AT mlsandiegomcglone mappingcoloureddissolvedorganicmatterinmanilabayusingsentinel3andwasi
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MAPPING COLOURED DISSOLVED ORGANIC MATTER IN MANILA BAY USING SENTINEL-3 AND WASI

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