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Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products
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| Zeitschriftentitel: | Journal of Geophysical Research: Oceans |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Journal of Geophysical Research: Oceans, 122, 2017, 9, S. 7717-7736 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Garcia‐Eidell, Cynthia Comiso, Josefino C. Dinnat, Emmanuel Brucker, Ludovic Garcia‐Eidell, Cynthia Comiso, Josefino C. Dinnat, Emmanuel Brucker, Ludovic |
|---|---|
| author |
Garcia‐Eidell, Cynthia Comiso, Josefino C. Dinnat, Emmanuel Brucker, Ludovic |
| spellingShingle |
Garcia‐Eidell, Cynthia Comiso, Josefino C. Dinnat, Emmanuel Brucker, Ludovic Journal of Geophysical Research: Oceans Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics Oceanography |
| author_sort |
garcia‐eidell, cynthia |
| spelling |
Garcia‐Eidell, Cynthia Comiso, Josefino C. Dinnat, Emmanuel Brucker, Ludovic 2169-9275 2169-9291 American Geophysical Union (AGU) Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics Oceanography http://dx.doi.org/10.1002/2017jc013184 <jats:title>Abstract</jats:title><jats:p>Global surface ocean salinity measurements have been available since the launch of SMOS in 2009 and coverage was further enhanced with the launch of Aquarius in 2011. In the polar regions where spatial and temporal changes in sea surface salinity (SSS) are deemed important, the data have not been as robustly validated because of the paucity of in situ measurements. This study presents a comparison of four SSS products in the ice‐free Arctic region, three using Aquarius data and one using SMOS data. The accuracy of each product is assessed through comparative analysis with ship and other in situ measurements. Results indicate RMS errors ranging between 0.33 and 0.89 psu. Overall, the four products show generally good consistency in spatial distribution with the Atlantic side being more saline than the Pacific side. A good agreement between the ship and satellite measurements was also observed in the low salinity regions in the Arctic Ocean, where SSS in situ measurements are usually sparse, at the end of summer melt seasons. Some discrepancies including biases of about 1 psu between the products in spatial and temporal distribution are observed. These are due in part to differences in retrieval techniques, geophysical filtering, and sea ice and land masks. The monthly SSS retrievals in the Arctic from 2011 to 2015 showed variations (within ∼1 psu) consistent with effects of sea ice seasonal cycles. This study indicates that spaceborne observations capture the seasonality and interannual variability of SSS in the Arctic with reasonably good accuracy.</jats:p> Satellite observed salinity distributions at high latitudes in the <scp>N</scp>orthern <scp>H</scp>emisphere: A comparison of four products Journal of Geophysical Research: Oceans |
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| title |
Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_unstemmed |
Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_full |
Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_fullStr |
Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_full_unstemmed |
Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_short |
Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_sort |
satellite observed salinity distributions at high latitudes in the <scp>n</scp>orthern <scp>h</scp>emisphere: a comparison of four products |
| topic |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics Oceanography |
| url |
http://dx.doi.org/10.1002/2017jc013184 |
| publishDate |
2017 |
| physical |
7717-7736 |
| description |
<jats:title>Abstract</jats:title><jats:p>Global surface ocean salinity measurements have been available since the launch of SMOS in 2009 and coverage was further enhanced with the launch of Aquarius in 2011. In the polar regions where spatial and temporal changes in sea surface salinity (SSS) are deemed important, the data have not been as robustly validated because of the paucity of in situ measurements. This study presents a comparison of four SSS products in the ice‐free Arctic region, three using Aquarius data and one using SMOS data. The accuracy of each product is assessed through comparative analysis with ship and other in situ measurements. Results indicate RMS errors ranging between 0.33 and 0.89 psu. Overall, the four products show generally good consistency in spatial distribution with the Atlantic side being more saline than the Pacific side. A good agreement between the ship and satellite measurements was also observed in the low salinity regions in the Arctic Ocean, where SSS in situ measurements are usually sparse, at the end of summer melt seasons. Some discrepancies including biases of about 1 psu between the products in spatial and temporal distribution are observed. These are due in part to differences in retrieval techniques, geophysical filtering, and sea ice and land masks. The monthly SSS retrievals in the Arctic from 2011 to 2015 showed variations (within ∼1 psu) consistent with effects of sea ice seasonal cycles. This study indicates that spaceborne observations capture the seasonality and interannual variability of SSS in the Arctic with reasonably good accuracy.</jats:p> |
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| author | Garcia‐Eidell, Cynthia, Comiso, Josefino C., Dinnat, Emmanuel, Brucker, Ludovic |
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| description | <jats:title>Abstract</jats:title><jats:p>Global surface ocean salinity measurements have been available since the launch of SMOS in 2009 and coverage was further enhanced with the launch of Aquarius in 2011. In the polar regions where spatial and temporal changes in sea surface salinity (SSS) are deemed important, the data have not been as robustly validated because of the paucity of in situ measurements. This study presents a comparison of four SSS products in the ice‐free Arctic region, three using Aquarius data and one using SMOS data. The accuracy of each product is assessed through comparative analysis with ship and other in situ measurements. Results indicate RMS errors ranging between 0.33 and 0.89 psu. Overall, the four products show generally good consistency in spatial distribution with the Atlantic side being more saline than the Pacific side. A good agreement between the ship and satellite measurements was also observed in the low salinity regions in the Arctic Ocean, where SSS in situ measurements are usually sparse, at the end of summer melt seasons. Some discrepancies including biases of about 1 psu between the products in spatial and temporal distribution are observed. These are due in part to differences in retrieval techniques, geophysical filtering, and sea ice and land masks. The monthly SSS retrievals in the Arctic from 2011 to 2015 showed variations (within ∼1 psu) consistent with effects of sea ice seasonal cycles. This study indicates that spaceborne observations capture the seasonality and interannual variability of SSS in the Arctic with reasonably good accuracy.</jats:p> |
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| spelling | Garcia‐Eidell, Cynthia Comiso, Josefino C. Dinnat, Emmanuel Brucker, Ludovic 2169-9275 2169-9291 American Geophysical Union (AGU) Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Geochemistry and Petrology Geophysics Oceanography http://dx.doi.org/10.1002/2017jc013184 <jats:title>Abstract</jats:title><jats:p>Global surface ocean salinity measurements have been available since the launch of SMOS in 2009 and coverage was further enhanced with the launch of Aquarius in 2011. In the polar regions where spatial and temporal changes in sea surface salinity (SSS) are deemed important, the data have not been as robustly validated because of the paucity of in situ measurements. This study presents a comparison of four SSS products in the ice‐free Arctic region, three using Aquarius data and one using SMOS data. The accuracy of each product is assessed through comparative analysis with ship and other in situ measurements. Results indicate RMS errors ranging between 0.33 and 0.89 psu. Overall, the four products show generally good consistency in spatial distribution with the Atlantic side being more saline than the Pacific side. A good agreement between the ship and satellite measurements was also observed in the low salinity regions in the Arctic Ocean, where SSS in situ measurements are usually sparse, at the end of summer melt seasons. Some discrepancies including biases of about 1 psu between the products in spatial and temporal distribution are observed. These are due in part to differences in retrieval techniques, geophysical filtering, and sea ice and land masks. The monthly SSS retrievals in the Arctic from 2011 to 2015 showed variations (within ∼1 psu) consistent with effects of sea ice seasonal cycles. This study indicates that spaceborne observations capture the seasonality and interannual variability of SSS in the Arctic with reasonably good accuracy.</jats:p> Satellite observed salinity distributions at high latitudes in the <scp>N</scp>orthern <scp>H</scp>emisphere: A comparison of four products Journal of Geophysical Research: Oceans |
| spellingShingle | Garcia‐Eidell, Cynthia, Comiso, Josefino C., Dinnat, Emmanuel, Brucker, Ludovic, Journal of Geophysical Research: Oceans, Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products, Earth and Planetary Sciences (miscellaneous), Space and Planetary Science, Geochemistry and Petrology, Geophysics, Oceanography |
| title | Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_full | Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_fullStr | Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_full_unstemmed | Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_short | Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| title_sort | satellite observed salinity distributions at high latitudes in the <scp>n</scp>orthern <scp>h</scp>emisphere: a comparison of four products |
| title_unstemmed | Satellite observed salinity distributions at high latitudes in the Northern Hemisphere: A comparison of four products |
| topic | Earth and Planetary Sciences (miscellaneous), Space and Planetary Science, Geochemistry and Petrology, Geophysics, Oceanography |
| url | http://dx.doi.org/10.1002/2017jc013184 |