Sławomir Sagan
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View article: Modelling the Remote Sensing Reflectance for the Sea Surface Layer Using Empirical Inherent Optical Properties
Modelling the Remote Sensing Reflectance for the Sea Surface Layer Using Empirical Inherent Optical Properties Open
The study focuses on modeling the remote sensing reflectance (Rrs) for optically complex waters based on the absorption (a), scattering (b), and backscattering (bb) coefficients measured at selected wavelengths (420 nm, 488 nm, 555 nm, and…
View article: Environmental change between 1980 and 2020 followed by societal change in the Gulf of Gdańsk, Southern Baltic, a review
Environmental change between 1980 and 2020 followed by societal change in the Gulf of Gdańsk, Southern Baltic, a review Open
The Gulf of Gdańsk belongs to the best-known marine areas in the Baltic, with regular environmental observations since mid-20th century. It covers the widest array of marine habitats in Polish Maritime areas (from large river mouth to Gdań…
View article: Cells of matter and life – towards understanding the structuring of particles and plankton patchiness in the Arctic fjords
Cells of matter and life – towards understanding the structuring of particles and plankton patchiness in the Arctic fjords Open
As the environmental conditions are typically not homogenous, especially in coastal regions, they must provide a mosaic of distinct habitats that can be occupied by particles and plankton in a characteristic way. Here we analyze and map th…
View article: A Novel Experiment in the Baltic Sea Shows that Dispersed Oil Droplets Can Be Distinguished by Remote Sensing
A Novel Experiment in the Baltic Sea Shows that Dispersed Oil Droplets Can Be Distinguished by Remote Sensing Open
FIGURE 1. Concept of the field experiment designed for remote detection of dispersed oil droplets.Natural Seawater Crude Oil 5 ppm Crude Oil 10 ppm Crude Oil 15 ppm
View article: Darkening of the Svalbard Fjords Waters Observed With Satellite Ocean Color Imagery in 1997–2019
Darkening of the Svalbard Fjords Waters Observed With Satellite Ocean Color Imagery in 1997–2019 Open
Global warming is not often discussed in the context of light availability within the water column. However, the light regimes in the Arctic Ocean are controlled by three factors that are influenced by climate changes which are the sea ice…
View article: Cells of matter and life – towards understanding the internal structure and spatial patchiness of particles and plankton distribution in the Arctic fjords
Cells of matter and life – towards understanding the internal structure and spatial patchiness of particles and plankton distribution in the Arctic fjords Open
Nothing is homogenous, neither the oceans, nor the distribution pattern of particles and plankton, both in the water column and within their patches. Here we analyse and map the spatio-temporal distribution patterns and the internal struct…
View article: Spatial Patterns of Particles and Plankton in the Warming Arctic Fjord (Isfjorden, West Spitsbergen) in Seven Consecutive Mid-Summers (2013–2019)
Spatial Patterns of Particles and Plankton in the Warming Arctic Fjord (Isfjorden, West Spitsbergen) in Seven Consecutive Mid-Summers (2013–2019) Open
The restructuring of planktonic communities toward an increasing share of small individuals is not only expected, but also already observed consequence of warming in the rapidly changing Arctic. Here, we demonstrate a simultaneous study on…
View article: Policy guidelines for implementation of mussel cultivation as a mitigation measure for coastal eutrophication in the Western Baltic Sea
Policy guidelines for implementation of mussel cultivation as a mitigation measure for coastal eutrophication in the Western Baltic Sea Open
In this document, we present a synthesis of updated documented experience in the implementation of mussel cultivation for mitigating effects of eutrophication and parameter estimates to facilitate potential application in coastal water man…
View article: Empirical Formulas for Estimating Backscattering and Absorption Coefficients in Complex Waters from Remote-Sensing Reflectance Spectra and Examples of Their Application
Empirical Formulas for Estimating Backscattering and Absorption Coefficients in Complex Waters from Remote-Sensing Reflectance Spectra and Examples of Their Application Open
Many standard methods used for the remote sensing of ocean colour have been developed, though mainly for clean, open ocean waters. This means that they may not always be effective in complex waters potentially containing high concentration…
View article: On the role of the seawater absorption-to-attenuation ratio in the radiance polarization above the southern Baltic surface
On the role of the seawater absorption-to-attenuation ratio in the radiance polarization above the southern Baltic surface Open
Information about polarization of light leaving the ocean surface has the potential to improve the quality of bio-optical parameter retrieval from ocean color remote sensing (OCRS). This improvement can be applied in numerous ways, such as…
View article: On the role of the seawater absorption to attenuation ratio in the radiance polarization above the Southern Baltic surface
On the role of the seawater absorption to attenuation ratio in the radiance polarization above the Southern Baltic surface Open
Information about polarization of light leaving the ocean surface has the potential to improve the quality of the bio-optical parameters retrieval from ocean color remote sensing (OCRS). This improvement can be applied in numerous ways suc…
View article: Characteristics of chromophoric and fluorescent dissolved organic matter in the Nordic Seas
Characteristics of chromophoric and fluorescent dissolved organic matter in the Nordic Seas Open
Optical properties of chromophoric (CDOM) and fluorescent dissolved organic matter (FDOM) were characterized in the Nordic Seas including the West Spitsbergen Shelf during June–July 2013, 2014, and 2015. The CDOM absorption coefficient at …
View article: Characteristics of Chromophoric and Fluorescent Dissolved Organic Matter in the Nordic Seas
Characteristics of Chromophoric and Fluorescent Dissolved Organic Matter in the Nordic Seas Open
Optical properties of Chromophoric (CDOM) and Fluorescent Dissolved Organic Matter (FDOM) were characterized in the Nordic Seas including the West Spitsbergen Shelf during June–July of 2013, 2014 and 2015. The CDOM absorption coefficient a…
View article: Inherent optical properties and particulate matter distribution in summer season in waters of Hornsund and Kongsfjordenen, Spitsbergen
Inherent optical properties and particulate matter distribution in summer season in waters of Hornsund and Kongsfjordenen, Spitsbergen Open
Two Spitsbergen fjords, Hornsund and Kongsfjorden, are known for being under different hydrological regimes. The first is cold, separated from warm Atlantic water by East Spitsbergen Current, while Kongsfjorden is frequently penetrated by …