Results 81 to 90 of about 1,955 (188)

Centroid-based endmember optimization of the triangular space method for fractional cover estimation: Mapping fractional cover of a vegetated ecosystem on Sentinel-3 OLCI image

open access: yesInternational Journal of Applied Earth Observations and Geoinformation
Accurately estimating fractional cover of vegetated ecosystems over large areas is essential for many scientific studies, including climate change, land cover and land use, etc.
Jia Tian   +5 more
doaj   +1 more source

Remote Sensing of Water Quality Parameters over Lake Balaton by Using Sentinel-3 OLCI [PDF]

open access: yes, 2018
The Ocean and Land Color Instrument (OLCI) onboard Sentinel 3A satellite was launched in February 2016. Level 2 (L2) products have been available for the public since July 2017.
Pálffy, Károly   +7 more
core   +1 more source

Enhanced Troposphere Tomography: Integration of GNSS and Remote Sensing Data With Optimal Vertical Constraints

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This article explores the enhancement of Global Navigation Satellite Systems (GNSS) tropospheric tomography by integrating remote sensing data and employing various vertical constraints.
Saeed Izanlou   +2 more
doaj   +1 more source

An extensive validation of ocean color products for the black sea

open access: yesGIScience & Remote Sensing
Ocean color remote sensing provides an efficient approach to monitor the state and changes in water bodies on Earth. The validation of an ocean color product is a key step in assessing its accuracy, directly influencing the confidence with which ...
Dalin Jiang   +14 more
doaj   +1 more source

Sentinel-3 OLCI GI-FAPAR & rectified channels in O10, O11, O12 and O17 bands with uncertainties [PDF]

open access: yes
Surface reflectances are important for monitoring land surfaces properties state and their changes. Two rectified channels were already operationally delivered in two bands as side products of Fraction of Absorbed Photosynthetically Active Radiation ...
GOBRON Nadine
core   +1 more source

Analysis of MERIS Reflectance Algorithms for Estimating Chlorophyll-a Concentration in a Brazilian Reservoir

open access: yesRemote Sensing, 2014
Chlorophyll-a (chl-a) is a central water quality parameter that has been estimated through remote sensing bio-optical models. This work evaluated the performance of three well established reflectance based bio-optical algorithms to retrieve chl-a from in 
Pétala B. Augusto-Silva   +6 more
doaj   +1 more source

Using Optical Water Types to Monitor Changes in Optically Complex Inland and Coastal Waters

open access: yesRemote Sensing, 2019
The European Space Agency’s Copernicus satellites Sentinel-2 and Sentinel-3 provide observations with high spectral, spatial, and temporal resolution which can be used to monitor inland and coastal waters. Such waters are optically complex, and the
Kristi Uudeberg   +4 more
doaj   +1 more source

Advancing CyanoHAB monitoring with hyperspectral data from NASA PACE: First results and validation

open access: yesInternational Journal of Applied Earth Observations and Geoinformation
This study presents the first assessment of NASA’s Phytoplankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission’s hyperspectral Ocean Color Imager (OCI) for cyanobacterial harmful algal blooms (cyanoHABs) monitoring.
Abhishek Kumar   +9 more
doaj   +1 more source

FLORIS: An Innovative Spectrometer for Fluorescence Measurement and Its Synergy with OLCI and SLSTR

open access: yesThe 17th International Workshop on Advanced Infrared Technology and Applications
FLEX is an ESA Explorer Mission devoted to monitoring the health status of Earth vegetation by means of measurements of the solar-induced fluorescence, allowing an early and more direct diagnosis of the status of the photosynthetic activity. FLEX will fly in 2025 in tandem with the Sentinel 3 C and D satellites of the ESA EE8 program in the framework ...
Peter Coppo   +6 more
openaire   +2 more sources

Assessment of ocean color atmospheric correction methods and development of a regional ocean color operational dataset for the Baltic Sea based on Sentinel-3 OLCI

open access: yesFrontiers in Marine Science
The Baltic Sea is characterized by large gradients in salinity, high concentrations of colored dissolved organic matter, and a phytoplankton phenology with two seasonal blooms.
Luis González Vilas   +7 more
doaj   +1 more source

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