Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color
Satellite remote sensing of chlorophyll a concentration (Chl-a) in the Arctic Ocean is spatially and temporally limited and needs to be supplemented and validated with substantial volumes of in situ observations. Here, we evaluated the capability of obtaining highly resolved in situ surface Chl-a us...
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OPTICAL SOC AMER
2018
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Online Access: | https://epic.awi.de/id/eprint/47503/ https://epic.awi.de/id/eprint/47503/1/Liu_etal_OE_2018.pdf https://www.osapublishing.org/DirectPDFAccess/9A0AA8A6-FA8D-0115-B51F0829B22CEA16_392632/oe-26-14-A678.pdf?da=1&id=392632&seq=0&mobile=no https://hdl.handle.net/10013/epic.a1c91b8f-0d37-416f-aabe-d99bb29af259 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:47503 2023-05-15T14:27:44+02:00 Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color Liu, Yangyang Röttgers, Rüdiger Ramírez-Pérez, Marta Dinter, Tilman Steinmetz, Francois Nöthig, Eva-Maria Hellmann, Sebastian Wiegmann, Sonja Bracher, Astrid 2018-06-19 application/pdf https://epic.awi.de/id/eprint/47503/ https://epic.awi.de/id/eprint/47503/1/Liu_etal_OE_2018.pdf https://www.osapublishing.org/DirectPDFAccess/9A0AA8A6-FA8D-0115-B51F0829B22CEA16_392632/oe-26-14-A678.pdf?da=1&id=392632&seq=0&mobile=no https://hdl.handle.net/10013/epic.a1c91b8f-0d37-416f-aabe-d99bb29af259 https://hdl.handle.net/ unknown OPTICAL SOC AMER https://epic.awi.de/id/eprint/47503/1/Liu_etal_OE_2018.pdf https://hdl.handle.net/ Liu, Y. orcid:0000-0001-7138-9146 , Röttgers, R. , Ramírez-Pérez, M. , Dinter, T. , Steinmetz, F. , Nöthig, E. M. orcid:0000-0002-7527-7827 , Hellmann, S. , Wiegmann, S. and Bracher, A. orcid:0000-0003-3025-5517 (2018) Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color , Optics Express . doi:10.1364/OE.26.00A678 <https://doi.org/10.1364/OE.26.00A678> , hdl:10013/epic.a1c91b8f-0d37-416f-aabe-d99bb29af259 EPIC3Optics Express, OPTICAL SOC AMER, ISSN: 1094-4087 Article peerRev 2018 ftawi https://doi.org/10.1364/OE.26.00A678 2021-12-24T15:43:57Z Satellite remote sensing of chlorophyll a concentration (Chl-a) in the Arctic Ocean is spatially and temporally limited and needs to be supplemented and validated with substantial volumes of in situ observations. Here, we evaluated the capability of obtaining highly resolved in situ surface Chl-a using underway spectrophotometry operated during two summer cruises in 2015 and 2016 in the Fram Strait. Results showed that Chl-a measured using high pressure liquid chromatography (HPLC) was well related (R2 = 0.90) to the collocated particulate absorption line height at 676 nm obtained from the underway spectrophotometry system. This enabled continuous surface Chl-a estimation along the cruise tracks. When used to validate Chl-a operational products as well as to assess the Chl-a algorithms of the aqua moderate resolution imaging spectroradiometer (MODIS-A) and Sentinel-3 Ocean Land Color Imager (OLCI) Level 2 Chl-a operational products, and from OLCI Level 2 products processed with Polymer atmospheric correction algorithm (version 4.1), the underway spectrophotometry based Chl-a data sets proved to be a much more sufficient data source by generating over one order of magnitude more match-ups than those obtained from discrete water samples. Overall, the band ratio (OCI, OC4) Chl-a operational products from MODIS-A and OLCI as well as OLCI C2RCC products showed acceptable results. The OLCI Polymer standard output provided the most reliable Chl-a estimates, and nearly as good results were obtained from the OCI algorithm with Polymer atmospheric correction method. This work confirms the great advantage of the underway spectrophotometry in enlarging in situ Chl-a data sets for the Fram Strait and improving satellite Chl-a validation and Chl-a algorithm assessment over discrete water sample analysis in the laboratory. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Fram Strait Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Optics Express 26 14 A678 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Satellite remote sensing of chlorophyll a concentration (Chl-a) in the Arctic Ocean is spatially and temporally limited and needs to be supplemented and validated with substantial volumes of in situ observations. Here, we evaluated the capability of obtaining highly resolved in situ surface Chl-a using underway spectrophotometry operated during two summer cruises in 2015 and 2016 in the Fram Strait. Results showed that Chl-a measured using high pressure liquid chromatography (HPLC) was well related (R2 = 0.90) to the collocated particulate absorption line height at 676 nm obtained from the underway spectrophotometry system. This enabled continuous surface Chl-a estimation along the cruise tracks. When used to validate Chl-a operational products as well as to assess the Chl-a algorithms of the aqua moderate resolution imaging spectroradiometer (MODIS-A) and Sentinel-3 Ocean Land Color Imager (OLCI) Level 2 Chl-a operational products, and from OLCI Level 2 products processed with Polymer atmospheric correction algorithm (version 4.1), the underway spectrophotometry based Chl-a data sets proved to be a much more sufficient data source by generating over one order of magnitude more match-ups than those obtained from discrete water samples. Overall, the band ratio (OCI, OC4) Chl-a operational products from MODIS-A and OLCI as well as OLCI C2RCC products showed acceptable results. The OLCI Polymer standard output provided the most reliable Chl-a estimates, and nearly as good results were obtained from the OCI algorithm with Polymer atmospheric correction method. This work confirms the great advantage of the underway spectrophotometry in enlarging in situ Chl-a data sets for the Fram Strait and improving satellite Chl-a validation and Chl-a algorithm assessment over discrete water sample analysis in the laboratory. |
format |
Article in Journal/Newspaper |
author |
Liu, Yangyang Röttgers, Rüdiger Ramírez-Pérez, Marta Dinter, Tilman Steinmetz, Francois Nöthig, Eva-Maria Hellmann, Sebastian Wiegmann, Sonja Bracher, Astrid |
spellingShingle |
Liu, Yangyang Röttgers, Rüdiger Ramírez-Pérez, Marta Dinter, Tilman Steinmetz, Francois Nöthig, Eva-Maria Hellmann, Sebastian Wiegmann, Sonja Bracher, Astrid Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color |
author_facet |
Liu, Yangyang Röttgers, Rüdiger Ramírez-Pérez, Marta Dinter, Tilman Steinmetz, Francois Nöthig, Eva-Maria Hellmann, Sebastian Wiegmann, Sonja Bracher, Astrid |
author_sort |
Liu, Yangyang |
title |
Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color |
title_short |
Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color |
title_full |
Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color |
title_fullStr |
Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color |
title_full_unstemmed |
Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color |
title_sort |
underway spectrophotometry in the fram strait (european arctic ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color |
publisher |
OPTICAL SOC AMER |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/47503/ https://epic.awi.de/id/eprint/47503/1/Liu_etal_OE_2018.pdf https://www.osapublishing.org/DirectPDFAccess/9A0AA8A6-FA8D-0115-B51F0829B22CEA16_392632/oe-26-14-A678.pdf?da=1&id=392632&seq=0&mobile=no https://hdl.handle.net/10013/epic.a1c91b8f-0d37-416f-aabe-d99bb29af259 https://hdl.handle.net/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Fram Strait |
genre_facet |
Arctic Arctic Arctic Ocean Fram Strait |
op_source |
EPIC3Optics Express, OPTICAL SOC AMER, ISSN: 1094-4087 |
op_relation |
https://epic.awi.de/id/eprint/47503/1/Liu_etal_OE_2018.pdf https://hdl.handle.net/ Liu, Y. orcid:0000-0001-7138-9146 , Röttgers, R. , Ramírez-Pérez, M. , Dinter, T. , Steinmetz, F. , Nöthig, E. M. orcid:0000-0002-7527-7827 , Hellmann, S. , Wiegmann, S. and Bracher, A. orcid:0000-0003-3025-5517 (2018) Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color , Optics Express . doi:10.1364/OE.26.00A678 <https://doi.org/10.1364/OE.26.00A678> , hdl:10013/epic.a1c91b8f-0d37-416f-aabe-d99bb29af259 |
op_doi |
https://doi.org/10.1364/OE.26.00A678 |
container_title |
Optics Express |
container_volume |
26 |
container_issue |
14 |
container_start_page |
A678 |
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1766301598239162368 |