Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling
The euphotic depth (Zeu) is a key parameter in modelling primary production (PP) using satellite ocean colour. However, evaluations of satellite Zeu products are scarce. The objective of this paper is to investigate existing approaches and sensors to estimate Zeu from satellite and to evaluate how d...
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Online Access: | https://epic.awi.de/id/eprint/33411/ https://epic.awi.de/id/eprint/33411/1/Soppa_etal_2013_RSE.pdf http://www.sciencedirect.com/science/article/pii/S0034425713002101 https://hdl.handle.net/10013/epic.41878 https://hdl.handle.net/10013/epic.41878.d001 |
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ftawi:oai:epic.awi.de:33411 2024-09-15T18:37:08+00:00 Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling Soppa, Mariana Dinter, Tilman Taylor, Bettina Bracher, Astrid 2013-10 application/pdf https://epic.awi.de/id/eprint/33411/ https://epic.awi.de/id/eprint/33411/1/Soppa_etal_2013_RSE.pdf http://www.sciencedirect.com/science/article/pii/S0034425713002101 https://hdl.handle.net/10013/epic.41878 https://hdl.handle.net/10013/epic.41878.d001 unknown ELSEVIER SCIENCE INC https://epic.awi.de/id/eprint/33411/1/Soppa_etal_2013_RSE.pdf https://hdl.handle.net/10013/epic.41878.d001 Soppa, M. , Dinter, T. , Taylor, B. and Bracher, A. orcid:0000-0003-3025-5517 (2013) Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling , Remote Sensing of Environment, 137 , pp. 198-211 . doi:10.1016/j.rse.2013.06.017 <https://doi.org/10.1016/j.rse.2013.06.017> , hdl:10013/epic.41878 EPIC3Remote Sensing of Environment, ELSEVIER SCIENCE INC, 137, pp. 198-211, ISSN: 0034-4257 Article isiRev 2013 ftawi https://doi.org/10.1016/j.rse.2013.06.017 2024-06-24T04:07:26Z The euphotic depth (Zeu) is a key parameter in modelling primary production (PP) using satellite ocean colour. However, evaluations of satellite Zeu products are scarce. The objective of this paper is to investigate existing approaches and sensors to estimate Zeu from satellite and to evaluate how different Zeu products might affect the estimation of PP in the Southern Ocean (SO). Euphotic depth was derived from MODIS and SeaWiFS products of (i) surface chlorophyll-a (Zeu-Chla) and (ii) inherent optical properties (Zeu-IOP). They were compared with in situ measurements of Zeu from different regions of the SO. Both approaches and sensors are robust to retrieve Zeu, although the best results were obtained using the IOP approach and SeaWiFS data, with an average percentage of error (E) of 25.43% and mean absolute error (MAE) of 0.10 m (log scale). Nevertheless, differences in the spatial distribution of Zeu-Chla and Zeu-IOP for both sensors were found as large as 30% over specific regions. These differences were also observed in PP. On average, PP based on Zeu-Chla was 8% higher than PP based on Zeu-IOP, but it was up to 30% higher south of 60°S. Satellite phytoplankton absorption coefficients (aph) derived by the Quasi-Analytical Algorithm at different wavelengths were also validated and the results showed that MODIS aph are generally more robust than SeaWiFS. Thus, MODIS aph should be preferred in PP models based on aph in the SO. Further, we reinforce the importance of investigating the spatial differences between satellite products, which might not be detected by the validation with in situ measurements due to the insufficient amount and uneven distribution of the data. Article in Journal/Newspaper Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Remote Sensing of Environment 137 198 211 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The euphotic depth (Zeu) is a key parameter in modelling primary production (PP) using satellite ocean colour. However, evaluations of satellite Zeu products are scarce. The objective of this paper is to investigate existing approaches and sensors to estimate Zeu from satellite and to evaluate how different Zeu products might affect the estimation of PP in the Southern Ocean (SO). Euphotic depth was derived from MODIS and SeaWiFS products of (i) surface chlorophyll-a (Zeu-Chla) and (ii) inherent optical properties (Zeu-IOP). They were compared with in situ measurements of Zeu from different regions of the SO. Both approaches and sensors are robust to retrieve Zeu, although the best results were obtained using the IOP approach and SeaWiFS data, with an average percentage of error (E) of 25.43% and mean absolute error (MAE) of 0.10 m (log scale). Nevertheless, differences in the spatial distribution of Zeu-Chla and Zeu-IOP for both sensors were found as large as 30% over specific regions. These differences were also observed in PP. On average, PP based on Zeu-Chla was 8% higher than PP based on Zeu-IOP, but it was up to 30% higher south of 60°S. Satellite phytoplankton absorption coefficients (aph) derived by the Quasi-Analytical Algorithm at different wavelengths were also validated and the results showed that MODIS aph are generally more robust than SeaWiFS. Thus, MODIS aph should be preferred in PP models based on aph in the SO. Further, we reinforce the importance of investigating the spatial differences between satellite products, which might not be detected by the validation with in situ measurements due to the insufficient amount and uneven distribution of the data. |
format |
Article in Journal/Newspaper |
author |
Soppa, Mariana Dinter, Tilman Taylor, Bettina Bracher, Astrid |
spellingShingle |
Soppa, Mariana Dinter, Tilman Taylor, Bettina Bracher, Astrid Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling |
author_facet |
Soppa, Mariana Dinter, Tilman Taylor, Bettina Bracher, Astrid |
author_sort |
Soppa, Mariana |
title |
Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling |
title_short |
Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling |
title_full |
Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling |
title_fullStr |
Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling |
title_full_unstemmed |
Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling |
title_sort |
satellite derived euphotic depth in the southern ocean: implications for primary production modelling |
publisher |
ELSEVIER SCIENCE INC |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/33411/ https://epic.awi.de/id/eprint/33411/1/Soppa_etal_2013_RSE.pdf http://www.sciencedirect.com/science/article/pii/S0034425713002101 https://hdl.handle.net/10013/epic.41878 https://hdl.handle.net/10013/epic.41878.d001 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
EPIC3Remote Sensing of Environment, ELSEVIER SCIENCE INC, 137, pp. 198-211, ISSN: 0034-4257 |
op_relation |
https://epic.awi.de/id/eprint/33411/1/Soppa_etal_2013_RSE.pdf https://hdl.handle.net/10013/epic.41878.d001 Soppa, M. , Dinter, T. , Taylor, B. and Bracher, A. orcid:0000-0003-3025-5517 (2013) Satellite derived euphotic depth in the Southern Ocean: Implications for primary production modelling , Remote Sensing of Environment, 137 , pp. 198-211 . doi:10.1016/j.rse.2013.06.017 <https://doi.org/10.1016/j.rse.2013.06.017> , hdl:10013/epic.41878 |
op_doi |
https://doi.org/10.1016/j.rse.2013.06.017 |
container_title |
Remote Sensing of Environment |
container_volume |
137 |
container_start_page |
198 |
op_container_end_page |
211 |
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1810481465905905664 |