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Optically black waters in the northern Baltic Sea
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| Zeitschriftentitel: | Geophysical Research Letters |
|---|---|
| Personen und Körperschaften: | , |
| In: | Geophysical Research Letters, 37, 2010, 9 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Berthon, Jean‐François Zibordi, Giuseppe Berthon, Jean‐François Zibordi, Giuseppe |
|---|---|
| author |
Berthon, Jean‐François Zibordi, Giuseppe |
| spellingShingle |
Berthon, Jean‐François Zibordi, Giuseppe Geophysical Research Letters Optically black waters in the northern Baltic Sea General Earth and Planetary Sciences Geophysics |
| author_sort |
berthon, jean‐françois |
| spelling |
Berthon, Jean‐François Zibordi, Giuseppe 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2010gl043227 <jats:p>The peculiar bio‐optical properties of the northernmost waters of the Baltic Sea (Bothnian Sea and Bothnian Bay) are illustrated by exploiting unique <jats:italic>in situ</jats:italic> measurements of apparent and inherent optical properties collected in 2007. Specifically, this study shows that the high values of absorption by colored dissolved organic matter (a<jats:sub>ys</jats:sub>(412) around 1.4 m<jats:sup>−1</jats:sup>) resulting from the presence of humic matter brought by the numerous Swedish and Finnish rivers alimenting the basin are not correlated with high concentrations of particles as generally observed in the southern Baltic Sea. As a consequence, extremely low values (i.e., less than 0.5) of the ratio of scattering to absorption are observed in the blue spectral region. The corresponding spectra of normalized water leaving radiance are close to satisfy the “black pixel” assumption in the blue and even in the green part of the visible spectrum. Consequently, the Bothnian Sea and most of all the Bothnian Bay, appear ideal candidates for studies on atmospheric corrections and vicarious calibration of ocean color sensors in coastal waters.</jats:p> Optically black waters in the northern Baltic Sea Geophysical Research Letters |
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Optically black waters in the northern Baltic Sea |
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Optically black waters in the northern Baltic Sea |
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Optically black waters in the northern Baltic Sea |
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Optically black waters in the northern Baltic Sea |
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Optically black waters in the northern Baltic Sea |
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Optically black waters in the northern Baltic Sea |
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optically black waters in the northern baltic sea |
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General Earth and Planetary Sciences Geophysics |
| url |
http://dx.doi.org/10.1029/2010gl043227 |
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2010 |
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|
| description |
<jats:p>The peculiar bio‐optical properties of the northernmost waters of the Baltic Sea (Bothnian Sea and Bothnian Bay) are illustrated by exploiting unique <jats:italic>in situ</jats:italic> measurements of apparent and inherent optical properties collected in 2007. Specifically, this study shows that the high values of absorption by colored dissolved organic matter (a<jats:sub>ys</jats:sub>(412) around 1.4 m<jats:sup>−1</jats:sup>) resulting from the presence of humic matter brought by the numerous Swedish and Finnish rivers alimenting the basin are not correlated with high concentrations of particles as generally observed in the southern Baltic Sea. As a consequence, extremely low values (i.e., less than 0.5) of the ratio of scattering to absorption are observed in the blue spectral region. The corresponding spectra of normalized water leaving radiance are close to satisfy the “black pixel” assumption in the blue and even in the green part of the visible spectrum. Consequently, the Bothnian Sea and most of all the Bothnian Bay, appear ideal candidates for studies on atmospheric corrections and vicarious calibration of ocean color sensors in coastal waters.</jats:p> |
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| author | Berthon, Jean‐François, Zibordi, Giuseppe |
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| description | <jats:p>The peculiar bio‐optical properties of the northernmost waters of the Baltic Sea (Bothnian Sea and Bothnian Bay) are illustrated by exploiting unique <jats:italic>in situ</jats:italic> measurements of apparent and inherent optical properties collected in 2007. Specifically, this study shows that the high values of absorption by colored dissolved organic matter (a<jats:sub>ys</jats:sub>(412) around 1.4 m<jats:sup>−1</jats:sup>) resulting from the presence of humic matter brought by the numerous Swedish and Finnish rivers alimenting the basin are not correlated with high concentrations of particles as generally observed in the southern Baltic Sea. As a consequence, extremely low values (i.e., less than 0.5) of the ratio of scattering to absorption are observed in the blue spectral region. The corresponding spectra of normalized water leaving radiance are close to satisfy the “black pixel” assumption in the blue and even in the green part of the visible spectrum. Consequently, the Bothnian Sea and most of all the Bothnian Bay, appear ideal candidates for studies on atmospheric corrections and vicarious calibration of ocean color sensors in coastal waters.</jats:p> |
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| institution | DE-D275, DE-Bn3, DE-Brt1, DE-D161, DE-Zwi2, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229 |
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| spelling | Berthon, Jean‐François Zibordi, Giuseppe 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2010gl043227 <jats:p>The peculiar bio‐optical properties of the northernmost waters of the Baltic Sea (Bothnian Sea and Bothnian Bay) are illustrated by exploiting unique <jats:italic>in situ</jats:italic> measurements of apparent and inherent optical properties collected in 2007. Specifically, this study shows that the high values of absorption by colored dissolved organic matter (a<jats:sub>ys</jats:sub>(412) around 1.4 m<jats:sup>−1</jats:sup>) resulting from the presence of humic matter brought by the numerous Swedish and Finnish rivers alimenting the basin are not correlated with high concentrations of particles as generally observed in the southern Baltic Sea. As a consequence, extremely low values (i.e., less than 0.5) of the ratio of scattering to absorption are observed in the blue spectral region. The corresponding spectra of normalized water leaving radiance are close to satisfy the “black pixel” assumption in the blue and even in the green part of the visible spectrum. Consequently, the Bothnian Sea and most of all the Bothnian Bay, appear ideal candidates for studies on atmospheric corrections and vicarious calibration of ocean color sensors in coastal waters.</jats:p> Optically black waters in the northern Baltic Sea Geophysical Research Letters |
| spellingShingle | Berthon, Jean‐François, Zibordi, Giuseppe, Geophysical Research Letters, Optically black waters in the northern Baltic Sea, General Earth and Planetary Sciences, Geophysics |
| title | Optically black waters in the northern Baltic Sea |
| title_full | Optically black waters in the northern Baltic Sea |
| title_fullStr | Optically black waters in the northern Baltic Sea |
| title_full_unstemmed | Optically black waters in the northern Baltic Sea |
| title_short | Optically black waters in the northern Baltic Sea |
| title_sort | optically black waters in the northern baltic sea |
| title_unstemmed | Optically black waters in the northern Baltic Sea |
| topic | General Earth and Planetary Sciences, Geophysics |
| url | http://dx.doi.org/10.1029/2010gl043227 |