Characterization of Optical Attenuation by Colored Dissolved Organic Matter (CDOM) in the Red Sea

Handle URI:
http://hdl.handle.net/10754/621913
Title:
Characterization of Optical Attenuation by Colored Dissolved Organic Matter (CDOM) in the Red Sea
Authors:
Tiwari, Surya Prakash ( 0000-0001-8833-132X ) ; Kürten, Benjamin ( 0000-0003-0328-7847 ) ; Jones, Burton ( 0000-0002-9599-1593 )
Abstract:
Optical properties of colored dissolved organic matter (CDOM) control the downward irradiance in the ultraviolet and visible range of the electromagnetic radiation. CDOM is a strong absorber in shorter wavelengths (ultraviolet light) with steeper spectral slopes in the open ocean. Despite the importance of CDOM in understanding physical and biogeochemical processes in the marine environment, in situ measurements of optical properties in the Red Sea are sparse. This study comprises CDOM absorption from two different instruments (i.e. a spectrophotometer and WET Labs ac-s sensor), and assesses the variations in optical properties of CDOM in the Red Sea using data collected in 2014 and 2015. Three global inversion algorithms (Garver-Siegel-Maritorena model - GSM, Quasi-Analytical Algorithm - QAA, and the Constrained Linear-Matrix inversion model - CLM) were applied to recent data collected in the Red Sea, providing the comparison at five key selected wavelengths (412, 443, 490, 510, and 555 nm) demonstrated that in situ aCDOM values were higher than the values predicted from the three inversion algorithms and leads to underestimating in situ measurements. This finding is consistent with the conclusion of Brewin et al. (2015) that overestimation of chlorophyll in the Red Sea could be due to excessive CDOM.
KAUST Department:
Red Sea Research Center (RSRC); Biological and Environmental Sciences & Engineering Division (BESE)
Conference/Event name:
Ocean Sciences Meeting 2016
Issue Date:
Feb-2016
DOI:
10.13140/RG.2.1.1270.4409
Type:
Poster
Sponsors:
This study is supported by King Abdullah University of Science and Technology (KAUST), Kingdom of Saudi Arabia.
Additional Links:
https://www.researchgate.net/publication/296933705_Characterization_of_Optical_Attenuation_by_Colored_Dissolved_Organic_Matter_CDOM_in_the_Red_Sea
Appears in Collections:
Posters

Full metadata record

DC FieldValue Language
dc.contributor.authorTiwari, Surya Prakashen
dc.contributor.authorKürten, Benjaminen
dc.contributor.authorJones, Burtonen
dc.date.accessioned2016-12-01T13:37:13Z-
dc.date.available2016-12-01T13:37:13Z-
dc.date.issued2016-02-
dc.identifier.doi10.13140/RG.2.1.1270.4409en
dc.identifier.urihttp://hdl.handle.net/10754/621913-
dc.description.abstractOptical properties of colored dissolved organic matter (CDOM) control the downward irradiance in the ultraviolet and visible range of the electromagnetic radiation. CDOM is a strong absorber in shorter wavelengths (ultraviolet light) with steeper spectral slopes in the open ocean. Despite the importance of CDOM in understanding physical and biogeochemical processes in the marine environment, in situ measurements of optical properties in the Red Sea are sparse. This study comprises CDOM absorption from two different instruments (i.e. a spectrophotometer and WET Labs ac-s sensor), and assesses the variations in optical properties of CDOM in the Red Sea using data collected in 2014 and 2015. Three global inversion algorithms (Garver-Siegel-Maritorena model - GSM, Quasi-Analytical Algorithm - QAA, and the Constrained Linear-Matrix inversion model - CLM) were applied to recent data collected in the Red Sea, providing the comparison at five key selected wavelengths (412, 443, 490, 510, and 555 nm) demonstrated that in situ aCDOM values were higher than the values predicted from the three inversion algorithms and leads to underestimating in situ measurements. This finding is consistent with the conclusion of Brewin et al. (2015) that overestimation of chlorophyll in the Red Sea could be due to excessive CDOM.en
dc.description.sponsorshipThis study is supported by King Abdullah University of Science and Technology (KAUST), Kingdom of Saudi Arabia.en
dc.relation.urlhttps://www.researchgate.net/publication/296933705_Characterization_of_Optical_Attenuation_by_Colored_Dissolved_Organic_Matter_CDOM_in_the_Red_Seaen
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.subjectRemote Sensingen
dc.subjectRed Seaen
dc.subjectCharacterizationen
dc.subjectSensorsen
dc.titleCharacterization of Optical Attenuation by Colored Dissolved Organic Matter (CDOM) in the Red Seaen
dc.typePosteren
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentBiological and Environmental Sciences & Engineering Division (BESE)en
dc.conference.date1-26 February 2016en
dc.conference.nameOcean Sciences Meeting 2016en
dc.conference.locationNew Orleans, Louisiana, USAen
kaust.authorTiwari, Surya Prakashen
kaust.authorKürten, Benjaminen
kaust.authorJones, Burtonen
This item is licensed under a Creative Commons License
Creative Commons
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.