Laser remote sensing calibration of ocean color satellite data
world ocean: in fact, those processes dramatically affect the climatic equilibrium of our planet. For this reason, many advanced active and passive remote sensors have been used to study phytoplankton dynamics, since such phenomena are thought to be responsible for the sequestration of atmospheric c...
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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ftdoajarticles:oai:doaj.org/article:b32c2890811e481e8187d3be5aa5f535 2023-05-15T13:56:11+02:00 Laser remote sensing calibration of ocean color satellite data N. V. Kolodnikova L. Fiorani F. Colao R. Fantoni R. Barbini A. Palucci 2006-06-01T00:00:00Z https://doi.org/10.4401/ag-3146 https://doaj.org/article/b32c2890811e481e8187d3be5aa5f535 EN eng Istituto Nazionale di Geofisica e Vulcanologia (INGV) http://www.annalsofgeophysics.eu/index.php/annals/article/view/3146 https://doaj.org/toc/1593-5213 https://doaj.org/toc/2037-416X doi:10.4401/ag-3146 1593-5213 2037-416X https://doaj.org/article/b32c2890811e481e8187d3be5aa5f535 Annals of Geophysics, Vol 49, Iss 1 (2006) LIDAR fluorosensor satellite radiometer SeaWiFS calibration chlorophyll-a primary production Antarctica Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 article 2006 ftdoajarticles https://doi.org/10.4401/ag-3146 2022-12-31T15:07:53Z world ocean: in fact, those processes dramatically affect the climatic equilibrium of our planet. For this reason, many advanced active and passive remote sensors have been used to study phytoplankton dynamics, since such phenomena are thought to be responsible for the sequestration of atmospheric carbon dioxide, one of the most important greenhouse gases. In this paper, one laser system and three satellite radiometers routinely used for the study of the phytoplankton dynamics will be briefly reviewed. Satellite sensors have been preferred to airborne sensors because, to our knowledge, ocean color airborne radiometers have not been operated in Antarctica, at least not throughout the whole lapse of time examined in this study. Particular focus was on the laser system (ELF) and on a specific satellite radiometer (SeaWiFS). ELF is based on the laser-induced fluorescence of phytoplankton pigments and was conceived for the Italian expeditions to Antarctica. The goal of SeaWiFS is to provide the Earth science community with quantitative data on the global ocean bio-optical properties. Such satellite radiometer has been calibrated with in situ data mainly acquired in non polar regions. This is why a comparison between ELF and SeaWiFS measurements of chlorophyll-a surface concentrations in the Southern Ocean during the austral summer 1997-1998 was believed to be significant. Our results indicate that SeaWiFS overestimates high concentrations and underestimates low concentrations. In order to correct this behavior, the chlorophyll- a bio-optical algorithm of SeaWiFS has been recalibrated according to the measurements of ELF, thus providing a new estimation of the primary production in the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctica Southern Ocean Directory of Open Access Journals: DOAJ Articles Austral Southern Ocean Annals of Geophysics 49 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
LIDAR fluorosensor satellite radiometer SeaWiFS calibration chlorophyll-a primary production Antarctica Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
LIDAR fluorosensor satellite radiometer SeaWiFS calibration chlorophyll-a primary production Antarctica Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 N. V. Kolodnikova L. Fiorani F. Colao R. Fantoni R. Barbini A. Palucci Laser remote sensing calibration of ocean color satellite data |
topic_facet |
LIDAR fluorosensor satellite radiometer SeaWiFS calibration chlorophyll-a primary production Antarctica Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
description |
world ocean: in fact, those processes dramatically affect the climatic equilibrium of our planet. For this reason, many advanced active and passive remote sensors have been used to study phytoplankton dynamics, since such phenomena are thought to be responsible for the sequestration of atmospheric carbon dioxide, one of the most important greenhouse gases. In this paper, one laser system and three satellite radiometers routinely used for the study of the phytoplankton dynamics will be briefly reviewed. Satellite sensors have been preferred to airborne sensors because, to our knowledge, ocean color airborne radiometers have not been operated in Antarctica, at least not throughout the whole lapse of time examined in this study. Particular focus was on the laser system (ELF) and on a specific satellite radiometer (SeaWiFS). ELF is based on the laser-induced fluorescence of phytoplankton pigments and was conceived for the Italian expeditions to Antarctica. The goal of SeaWiFS is to provide the Earth science community with quantitative data on the global ocean bio-optical properties. Such satellite radiometer has been calibrated with in situ data mainly acquired in non polar regions. This is why a comparison between ELF and SeaWiFS measurements of chlorophyll-a surface concentrations in the Southern Ocean during the austral summer 1997-1998 was believed to be significant. Our results indicate that SeaWiFS overestimates high concentrations and underestimates low concentrations. In order to correct this behavior, the chlorophyll- a bio-optical algorithm of SeaWiFS has been recalibrated according to the measurements of ELF, thus providing a new estimation of the primary production in the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
N. V. Kolodnikova L. Fiorani F. Colao R. Fantoni R. Barbini A. Palucci |
author_facet |
N. V. Kolodnikova L. Fiorani F. Colao R. Fantoni R. Barbini A. Palucci |
author_sort |
N. V. Kolodnikova |
title |
Laser remote sensing calibration of ocean color satellite data |
title_short |
Laser remote sensing calibration of ocean color satellite data |
title_full |
Laser remote sensing calibration of ocean color satellite data |
title_fullStr |
Laser remote sensing calibration of ocean color satellite data |
title_full_unstemmed |
Laser remote sensing calibration of ocean color satellite data |
title_sort |
laser remote sensing calibration of ocean color satellite data |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
publishDate |
2006 |
url |
https://doi.org/10.4401/ag-3146 https://doaj.org/article/b32c2890811e481e8187d3be5aa5f535 |
geographic |
Austral Southern Ocean |
geographic_facet |
Austral Southern Ocean |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_source |
Annals of Geophysics, Vol 49, Iss 1 (2006) |
op_relation |
http://www.annalsofgeophysics.eu/index.php/annals/article/view/3146 https://doaj.org/toc/1593-5213 https://doaj.org/toc/2037-416X doi:10.4401/ag-3146 1593-5213 2037-416X https://doaj.org/article/b32c2890811e481e8187d3be5aa5f535 |
op_doi |
https://doi.org/10.4401/ag-3146 |
container_title |
Annals of Geophysics |
container_volume |
49 |
container_issue |
1 |
_version_ |
1766263558153175040 |