Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors
The Nordic Seas and the Fram Strait regions are a melting pot of a number of water masses characterized by distinct optical water properties. The warm Atlantic Waters transported from the south and the Arctic Waters from the north, combined with the melt waters contributing to the Polar Waters, medi...
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ftmdpi:oai:mdpi.com:/2072-4292/12/17/2774/ 2023-08-20T04:04:12+02:00 Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors Marta Konik Piotr Kowalczuk Monika Zabłocka Anna Makarewicz Justyna Meler Agnieszka Zdun Mirosław Darecki agris 2020-08-26 application/pdf https://doi.org/10.3390/rs12172774 EN eng Multidisciplinary Digital Publishing Institute Ocean Remote Sensing https://dx.doi.org/10.3390/rs12172774 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 12; Issue 17; Pages: 2774 remote sensing ocean colour European Arctic Nordic Seas water-leaving radiance chlorophyll- a absorption Text 2020 ftmdpi https://doi.org/10.3390/rs12172774 2023-07-31T23:59:13Z The Nordic Seas and the Fram Strait regions are a melting pot of a number of water masses characterized by distinct optical water properties. The warm Atlantic Waters transported from the south and the Arctic Waters from the north, combined with the melt waters contributing to the Polar Waters, mediate the dynamic changes of the year-to-year large-scale circulation patterns in the area, which often form complex frontal zones. In the last decade, moreover, a significant shift in phytoplankton phenology in the area has been observed, with a certain northward expansion of temperate phytoplankton communities into the Arctic Ocean which could lead to a deterioration in the performance of remote sensing algorithms. In this research, we exploited the capability of the satellite sensors to monitor those inter-annual changes at basin scales. We propose locally adjusted algorithms for retrieving chlorophyll a concentrations Chla, absorption by particles ap at 443 and 670 nm, and total absorption atot at 443 and 670 nm developed on the basis of intensive field work conducted in 2013–2015. Measured in situ hyper spectral remote sensing reflectance has been used to reconstruct the MODIS and OLCI spectral channels for which the proposed algorithms have been adapted. We obtained MNB ≤ 0.5% for ap(670) and ≤3% for atot(670) and Chla. RMS was ≤30% for most of the retrieved optical water properties except ap(443) and Chla. The mean monthly mosaics of ap(443) computed on the basis of the proposed algorithm were used for reconstructing the spatial and temporal changes of the phytoplankton biomass in 2013–2015. The results corresponded very well with in situ measurements. Text Arctic Arctic Ocean Fram Strait Nordic Sea Nordic Seas Phytoplankton MDPI Open Access Publishing Arctic Arctic Ocean Remote Sensing 12 17 2774 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
remote sensing ocean colour European Arctic Nordic Seas water-leaving radiance chlorophyll- a absorption |
spellingShingle |
remote sensing ocean colour European Arctic Nordic Seas water-leaving radiance chlorophyll- a absorption Marta Konik Piotr Kowalczuk Monika Zabłocka Anna Makarewicz Justyna Meler Agnieszka Zdun Mirosław Darecki Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors |
topic_facet |
remote sensing ocean colour European Arctic Nordic Seas water-leaving radiance chlorophyll- a absorption |
description |
The Nordic Seas and the Fram Strait regions are a melting pot of a number of water masses characterized by distinct optical water properties. The warm Atlantic Waters transported from the south and the Arctic Waters from the north, combined with the melt waters contributing to the Polar Waters, mediate the dynamic changes of the year-to-year large-scale circulation patterns in the area, which often form complex frontal zones. In the last decade, moreover, a significant shift in phytoplankton phenology in the area has been observed, with a certain northward expansion of temperate phytoplankton communities into the Arctic Ocean which could lead to a deterioration in the performance of remote sensing algorithms. In this research, we exploited the capability of the satellite sensors to monitor those inter-annual changes at basin scales. We propose locally adjusted algorithms for retrieving chlorophyll a concentrations Chla, absorption by particles ap at 443 and 670 nm, and total absorption atot at 443 and 670 nm developed on the basis of intensive field work conducted in 2013–2015. Measured in situ hyper spectral remote sensing reflectance has been used to reconstruct the MODIS and OLCI spectral channels for which the proposed algorithms have been adapted. We obtained MNB ≤ 0.5% for ap(670) and ≤3% for atot(670) and Chla. RMS was ≤30% for most of the retrieved optical water properties except ap(443) and Chla. The mean monthly mosaics of ap(443) computed on the basis of the proposed algorithm were used for reconstructing the spatial and temporal changes of the phytoplankton biomass in 2013–2015. The results corresponded very well with in situ measurements. |
format |
Text |
author |
Marta Konik Piotr Kowalczuk Monika Zabłocka Anna Makarewicz Justyna Meler Agnieszka Zdun Mirosław Darecki |
author_facet |
Marta Konik Piotr Kowalczuk Monika Zabłocka Anna Makarewicz Justyna Meler Agnieszka Zdun Mirosław Darecki |
author_sort |
Marta Konik |
title |
Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors |
title_short |
Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors |
title_full |
Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors |
title_fullStr |
Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors |
title_full_unstemmed |
Empirical Relationships between Remote-Sensing Reflectance and Selected Inherent Optical Properties in Nordic Sea Surface Waters for the MODIS and OLCI Ocean Colour Sensors |
title_sort |
empirical relationships between remote-sensing reflectance and selected inherent optical properties in nordic sea surface waters for the modis and olci ocean colour sensors |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/rs12172774 |
op_coverage |
agris |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Fram Strait Nordic Sea Nordic Seas Phytoplankton |
genre_facet |
Arctic Arctic Ocean Fram Strait Nordic Sea Nordic Seas Phytoplankton |
op_source |
Remote Sensing; Volume 12; Issue 17; Pages: 2774 |
op_relation |
Ocean Remote Sensing https://dx.doi.org/10.3390/rs12172774 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs12172774 |
container_title |
Remote Sensing |
container_volume |
12 |
container_issue |
17 |
container_start_page |
2774 |
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1774714602065494016 |