Results 1 to 10 of about 2,683 (116)

Expected Improvements in the Quantitative Remote Sensing of Optically Complex Waters with the Use of an Optically Fast Hyperspectral Spectrometer—A Modeling Study [PDF]

Sensors, 2015
Using simulated data, we investigated the effect of noise in a spaceborne hyperspectral sensor on the accuracy of the atmospheric correction of at-sensor radiances and the consequent uncertainties in retrieved water quality parameters.
Wesley J. Moses, Jeffrey H. Bowles, Michael R. Corson   +2 more
doaj   +4 more sources

Classification of Several Optically Complex Waters in China Using in Situ Remote Sensing Reflectance

Remote Sensing, 2015
Determining the dominant optically active substances in water bodies via classification can improve the accuracy of bio-optical and water quality parameters estimated by remote sensing.
Qian Shen, Junsheng Li, Fangfang Zhang, Xu Sun, Jun Li, Wei Li, Bing Zhang   +6 more
doaj   +3 more sources

Enhancing Chlorophyll-a Estimation in Optically Complex Waters Using ZY-1 02E Hyperspectral Imagery: An Integrated Approach Combining Optical Classification and Multi-Index Blending Models

Remote Sensing
Chlorophyll-a (Chl-a) concentration is a key parameter for assessing the degree of eutrophication and the algal bloom risk in water bodies. Accurate and robust monitoring of Chl-a is crucial for effective water quality management of inland and coastal ...
Congxiang Yan, Xin Fu, Hailiang Gao, Wen Dong, Zhen Liu, Zhenghe Xu   +5 more
doaj   +3 more sources

In-situ manipulations of aquatic optical depth and its effect on small unoccupied aerial systems–derived spectral reflectance

Drone Systems and Applications, 2022
The collection of spectral data with sensors fixed to various platforms (e.g., satellites, occupied aerial vehicles, and small unoccupied aerial systems (sUAS)) has allowed for the estimation of optically active constituents (OACs) common in surface ...
Brandon K. Holzbauer-Schweitzer, Robert W. Nairn   +1 more
doaj   +1 more source

Satellite monitoring of chlorophyll-a threshold levels during an exceptional cyanobacterial bloom (2018-2019) in the Río de la Plata

Ribagua, 2023
The Río de la Plata estuary, located in southeast South America, is of great social and environmental relevance for the region. In the summer of 2018–2019, an exceptional cyanobacterial bloom was detected along the northern coast of the estuary, which ...
Fernanda P. Maciel, Signe Haakonsson, Lucía Ponce de León, Sylvia Bonilla, Francisco Pedocchi   +4 more
doaj   +1 more source

Mapping bathymetry and shallow water benthic habitats in inland and coastal waters with Sentinel-2

Journal of Limnology, 2023
Accurate determination of the water depth and benthic macroalgae composition in coastal and inland water bodies is important due to the high commercial and ecological value of these regions.
Laura Argus, Tiit Kutser, Birgot Paavel, Martin Ligi, Claudia Giardino, Mariano Bresciani, Tiia Möller   +6 more
doaj   +1 more source

A new approach to aquatic ecosystem monitoring of the Ob river [PDF]

Proceedings of the International Association of Hydrological Sciences, 2020
An integrated approach to aquatic ecosystem monitoring is being developed for the Ob river. The novelty of the approach is in transition to high-performance computing (HPC) under processing of remote sensing data and modeling of aquatic ecosystem ...
A. A. Tskhai, A. A. Tskhai, A. V. Puzanov, N. M. Kovalevskaya, V. V. Kirillov   +4 more
doaj   +1 more source

Ocean Colour Atmospheric Correction for Optically Complex Waters under High Solar Zenith Angles: Facilitating Frequent Diurnal Monitoring and Management

Remote Sensing, 2023
Accurate atmospheric correction (AC) is one fundamental and essential step for successful ocean colour remote-sensing applications. Currently, most ACs and the associated ocean colour remote-sensing applications are restricted to solar zenith angles ...
Yongquan Wang, Huizeng Liu, Zhengxin Zhang, Yanru Wang, Demei Zhao, Yu Zhang, Qingquan Li, Guofeng Wu   +7 more
doaj   +1 more source

Bio-geo-optical modelling of natural waters

Frontiers in Marine Science, 2023
The color of natural waters – oceanic, coastal, and inland – is determined by the spectral absorption and scattering properties of dissolved and particulate water constituents.
Shun Bi, Martin Hieronymi, Rüdiger Röttgers   +2 more
doaj   +1 more source

Glint Removal Assessment to Estimate the Remote Sensing Reflectance in Inland Waters with Widely Differing Optical Properties

Remote Sensing, 2018
The quality control of remote sensing reflectance (Rrs) is a challenging task in remote sensing applications, mainly in the retrieval of accurate in situ measurements carried out in optically complex aquatic systems. One of the main challenges is related
Nariane Bernardo, Enner Alcântara, Fernanda Watanabe, Thanan Rodrigues, Alisson Carmo, Ana Gomes, Caroline Andrade   +6 more
doaj   +1 more source