Results 51 to 60 of about 554 (171)

Satellite Solutions: Facing Chlorophyll‐a Retrieval in Small Mountain Lakes in the Sierra Nevada, Spain

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract National and international regulations enforce monitoring programmes of water quality to guide management actions of inland water ecosystems. Our study evaluates the effect of spectral and spatial resolutions on the estimation of chlorophyll‐a concentrations in mountain lakes, and derives implications for addressing the adjacency effect, which
J. Llodrà‐Llabrés, J. C. Pérez‐Girón, T. Postma, C. Pérez‐Martínez, D. Alcaraz‐Segura, J. Martínez‐López   +5 more
wiley   +1 more source

Remote Sensing Estimation of CDOM for Songhua River of China: Distributions and Implications

Remote Sensing
Rivers are crucial pathways for transporting organic carbon from land to ocean, playing a vital role in the global carbon cycle. Dissolved organic carbon (DOC) and chromophoric dissolved organic matter (CDOM) are major components of dissolved organic ...
Pengju Feng, Kaishan Song, Zhidan Wen, Hui Tao, Xiangfei Yu, Yingxin Shang   +5 more
doaj   +1 more source

Revisiting the disappearance of terrestrial dissolved organic matter in the ocean: a δ¹³C study [PDF]

Biogeosciences, 2014
Organic carbon (OC) depleted in 13C is a widely used tracer for terrestrial organic matter (OM) in aquatic systems. Photochemical reactions can, however, change δ13C of dissolved organic carbon (DOC) when chromophoric, aromatic-rich terrestrial OC is ...
K. Lalonde, A. V. Vähätalo, Y. Gélinas   +2 more
doaj   +1 more source

Satellite Data Trace Seasonal Freshwater Dispersion in Hudson and James Bays

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Freshwater dispersal controls stratification, circulation, and biogeochemical processes in Hudson and James Bay (HJB); however, limited field observations hinder understanding of how different freshwater types drive change. This study uses Aqua‐Moderate Resolution Imaging Spectroradiometer and Soil Moisture and Ocean Salinity‐Microwave Imaging
Atreya Basu, Simon Bélanger, Zou Zou A. Kuzyk, Rakesh K. Singh, Soham Mukherjee, Pierre Larouche, Alessia C. Guzzi, Emma L. Ausen, Greg McCullough, Jens K. Ehn   +9 more
wiley   +1 more source

Soil quality degradation under seawater intrusion: chemical, spectral, and dielectric insights

Discover Soil
Soil salinization caused by seawater intrusion is a growing global concern that impacts agricultural productivity and soil sustainability. This study aimed to assess how saltwater intrusion influences the chemical, mineralogical, and electrical ...
Ajay L. Vishwakarma, Shruti O. Varma, Ajay Chaudhari, M. R. Sonawane   +3 more
doaj   +1 more source

Biophysical controls on spatial and summer/winter distributions of total and chromophoric dissolved organic matter in the Taiwan Strait

Frontiers in Marine Science, 2022
This study examined the physical and biogeochemical processes that determine the spatial and summer/winter distributions of dissolved organic matter (DOM) and chromophoric dissolved organic matter (CDOM) in the Taiwan Strait (TS).
Jia-Jang Hung, Wan-Tzu Lu, Hsin-Mei Yang, Hsin-Mei Yang, Yen-Hui Lin, Laodong Guo   +5 more
doaj   +1 more source

Are extracted materials truly representative of original samples? Impact of C18 extraction on CDOM optical and chemical properties

Frontiers in Chemistry, 2016
Some properties of dissolved organic matter (DOM) and chromophoric dissolved organic matter (CDOM) can be easily measured directly on whole waters, while others require sample concentration and removal of natural salts.
Andrea A Andrew, Rossana eDel Vecchio, Yi eZhang, Ajit eSubramaniam, Neil eBlough   +4 more
doaj   +1 more source

A semi‐analytical Bayesian estimate retrieval algorithm for the inversion of remote‐sensing reflectance in optically deep and shallow waters

Limnology and Oceanography: Methods, Volume 24, Issue 1, January 2026.
Abstract The inverse problem in remote sensing of aquatic environment consists in retrieving optically significant constituents (OSCs) from a spectral measurement of the remote sensing reflectance (Rrs).Optically significant constituent includes chlorophyll a concentration (Chl a), a proxy of phytoplankton biomass, absorption of colored detrital matter
Soham Mukherjee, Raphaël Mabit, Simon Bélanger   +2 more
wiley   +1 more source

Land Cover and Hydrology Regulate Riverine Carbon Emissions From Subarctic Catchments

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 1, January 2026.
Abstract Streams transport carbon (C) and nutrients across the terrestrial‐aquatic interface and are significant sources of methane (CH4) and carbon dioxide (CO2) to the atmosphere. Climate‐induced changes in vegetation and hydrology increase the export of dissolved organic carbon (DOC) from terrestrial to aquatic ecosystems, but the impact of these ...
T. Saarela, C. Palacin‐Lizarbe, W. Hashmi, L. Kohl, M. E. Marushchak, H. M. P. Siljanen, X. Zhu, F. Berninger, J. Pumpanen   +8 more
wiley   +1 more source

On saltwater intrusion in Pearl River estuary using reflectance spectroscopy and simulated MERIS Data

Shui kexue jinzhan, 2012
Spectra,salinity,total suspended solids and colored dissolved organic matter are sampled at 44 locations in the Pearl River estuary on December 18,19 and 21,2006.The samples are analyzed.Based on the experimental results,the relationship between the ...
FANG Li-gang, LI Hong-li, CHEN Shui-sen
doaj   +1 more source