Results 21 to 30 of about 3,954 (213)

Chromophoric dissolved organic matter dynamics revealed through the optimization of an optical–biogeochemical model in the northwestern Mediterranean Sea [PDF]

Biogeosciences, 2023
Chromophoric dissolved organic matter (CDOM) significantly contributes to the non-water absorption budget in the Mediterranean Sea. The absorption coefficient of CDOM, aCDOM(λ), is measurable in situ and can be retrieved remotely, although ocean-colour ...
E. Álvarez, G. Cossarini, A. Teruzzi, J. Bruggeman, J. Bruggeman, K. Bolding, K. Bolding, S. Ciavatta, V. Vellucci, V. Vellucci, F. D'Ortenzio, D. Antoine, D. Antoine, P. Lazzari   +13 more
doaj   +1 more source

Optical Water Type Guided Approach to Estimate Optical Water Quality Parameters

Remote Sensing, 2020
Currently, water monitoring programs are mainly based on in situ measurements; however, this approach is time-consuming, expensive, and may not reflect the status of the whole water body.
Kristi Uudeberg, Age Aavaste, Kerttu-Liis Kõks, Ave Ansper, Mirjam Uusõue, Kersti Kangro, Ilmar Ansko, Martin Ligi, Kaire Toming, Anu Reinart   +9 more
doaj   +1 more source

Uncertainty budgets for liquid waveguide CDOM absorption measurements [PDF]

Applied Optics, 2017
Long path length liquid waveguide capillary cell (LWCC) systems using simple spectrometers to determine the spectral absorption by colored dissolved organic matter (CDOM) have previously been shown to have better measurement sensitivity compared to high-end spectrophotometers using 10 cm cuvettes.
Lefering, Ina, Röttgers, Rüdiger, Utschig, Christian, McKee, David   +3 more
openaire   +5 more sources

Spatio-seasonal variability of chromophoric dissolved organic matter absorption and responses to photobleaching in a large shallow temperate lake [PDF]

Biogeosciences, 2017
The development and validation of remote-sensing-based approaches for the retrieval of chromophoric dissolved organic matter (CDOM) concentrations requires a comprehensive understanding of the sources and magnitude of variability in the optical ...
M. E. Aulló-Maestro, P. Hunter, E. Spyrakos, P. Mercatoris, A. Kovács, H. Horváth, T. Preston, M. Présing, J. Torres Palenzuela, A. Tyler   +9 more
doaj   +1 more source

Detection and Sourcing of CDOM in Urban Coastal Waters With UV-Visible Imaging Spectroscopy

Frontiers in Environmental Science, 2021
Ultraviolet (UV)-visible imaging spectroscopy is an emerging and highly anticipated technology, expected to improve the remote sensing of coastal waters and expand its range of applications.
Joshua P. Harringmeyer, Karl Kaiser, Karl Kaiser, David R. Thompson, Michelle M. Gierach, Curtis L. Cash, Cédric G. Fichot   +6 more
doaj   +1 more source

Fluorescence and absorption properties of chromophoric dissolved organic matter (CDOM) in coastal surface waters of the northwestern Mediterranean Sea, influence of the Rhône River [PDF]

Biogeosciences, 2010
Seawater samples were collected monthly in surface waters (2 and 5 m depths) of the Bay of Marseilles (northwestern Mediterranean Sea; 5°17'30" E, 43°14'30" N) during one year from November 2007 to December 2008 and studied for total organic carbon (TOC)
J. Para, P. G. Coble, B. Charrière, M. Tedetti, C. Fontana, R. Sempéré   +5 more
doaj   +1 more source

Enhanced Estimate of Chromophoric Dissolved Organic Matter Using Machine Learning Algorithms from Landsat-8 OLI Data in the Pearl River Estuary

Remote Sensing, 2023
Chromophoric Dissolved Organic Matter (CDOM) plays a critical role in the carbon and biogeochemical cycles within aquatic ecosystems. Satellite imagery can be employed to determine aquatic CDOM concentrations, highlighting the need for effective and ...
Yihao Huang, Jiayi Pan, Adam T. Devlin
doaj   +1 more source

Optical Properties of Humic Substances and CDOM: Relation to Structure [PDF]

Environmental Science & Technology, 2009
The spectral dependencies of absorption and fluorescence emission (emission maxima (lamdamax), quantum yields (phi), and mean lifetimes (taum)) were acquired for a commercial lignin, Suwannee River humic (SRHA) and fulvic (SRFA) acids, and a series solid phase extracts (C18) from the Middle Atlantic Bight (MAB extracts).
Erin S, Boyle, Nicolas, Guerriero, Anthony, Thiallet, Rossana, Del Vecchio, Neil V, Blough   +4 more
openaire   +2 more sources

Analysis of Growth Dynamics and Carbon Sink Effects of Saccharina japonica Under Different Mariculture Densities in Sanggou Bay [PDF]

Progress in Fishery Sciences
To investigate the growth dynamics and carbon sequestration effects of kelp under different cultivation densities, this study used the traditional cultivation density of 100 ropes per raft (K0) in Sanggou Bay as the control group. During the tender stage
SUN Haoming, XU Dong, ZHANG Ya'nan, HUANG Xintong, SUN Yanmin, YANG Fan, WANG Yapeng, YE Naihao   +7 more
doaj   +1 more source

Size fractionation, chemotaxonomic groups and bio-optical properties of phytoplankton along a transect from the Mediterranean Sea to the SW Atlantic Ocean

Scientia Marina, 2019
The relationships between the structure of the phytoplankton community and the bio-optical properties of surface waters were studied during the TransPEGASO cruise along a transect across the Atlantic Ocean that covered seven biogeographical provinces ...
Sdena Nunes, Gonzalo Luís Perez, Mikel Latasa, Marina Zamanillo, Maximino Delgado, Eva Ortega-Retuerta, Celia Marrasé, Rafel Simó, Marta Estrada   +8 more
doaj   +1 more source