A compilation of surface inherent optical properties and phytoplankton pigment concentrations from the Atlantic Meridional Transect.
| Title: | A compilation of surface inherent optical properties and phytoplankton pigment concentrations from the Atlantic Meridional Transect. |
|---|---|
| Authors: | Jordan, Thomas M., Dall'Olmo, Giorgio, Tilstone, Gavin, Brewin, Robert J. W., Nencioli, Francesco, Airs, Ruth, Thomas, Crystal S., Schlüter, Louise |
| Source: | Earth System Science Data; 2025, Vol. 17 Issue 2, p493-516, 24p |
| Subject Terms: | HIGH performance liquid chromatography, COLLOIDAL carbon, OPTICAL properties, PIGMENTS, PHYTOPLANKTON, CHLOROPHYLL |
| Abstract: | In situ measurements of particulate inherent optical properties (IOPs) – absorption (ap(λ)), scattering (bp(λ)), and beam attenuation (cp(λ)) – are crucial for the development of optical algorithms that retrieve biogeochemical quantities such as chlorophyll a , particulate organic carbon (POC), and total suspended matter (TSM). Here we present a compilation of particulate absorption–attenuation spectrophotometric data measured underway on nine Atlantic Meridional Transect (AMT) cruises between 50° N and 50° S from 2009–2019. The compilation includes coincident high-performance liquid chromatography (HPLC) phytoplankton pigment concentrations, which are used to calibrate transects of total chlorophyll a (Tot_Chl_a) concentrations derived from the ap(λ) line-height method. The IOP data are processed using a consistent methodology and include propagated uncertainties for each IOP variable, uncertainty quantification for the Tot_Chl_a concentrations based on HPLC match-ups, application of consistent quality-control filters, and standardization of output data fields and formats. The total IOP dataset consists of ∼310000 measurements at a 1 min binning (∼270000 hyper-spectral) and >700 coincident HPLC pigment surface samples (∼600 of which are coincident with hyper-spectral IOPs). We present the geographic variation in the IOPs, HPLC phytoplankton pigments, and ap -derived Tot_Chl_a concentrations which are shown to have uncertainties between 8 % and 20 %. Additionally, to stimulate further investigation of accessory pigment extraction from ap(λ) , we quantify pigment correlation matrices and identify spectral characteristics of end-member ap(λ) spectra, where accessory pigment groupings are present in higher concentrations relative to Tot_Chl_a. All data are made publicly available in SeaBASS and NetCDF formats via the following links: https://seabass.gsfc.nasa.gov/archive/PML/AMT and 10.5281/zenodo.12527954. [ABSTRACT FROM AUTHOR] |
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| Database: | Complementary Index |
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| Items | – Name: Title Label: Title Group: Ti Data: A compilation of surface inherent optical properties and phytoplankton pigment concentrations from the Atlantic Meridional Transect. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jordan%2C+Thomas M%2E%22">Jordan, Thomas M.</searchLink><br /><searchLink fieldCode="AR" term="%22Dall'Olmo%2C+Giorgio%22">Dall'Olmo, Giorgio</searchLink><br /><searchLink fieldCode="AR" term="%22Tilstone%2C+Gavin%22">Tilstone, Gavin</searchLink><br /><searchLink fieldCode="AR" term="%22Brewin%2C+Robert J%2E W%2E%22">Brewin, Robert J. W.</searchLink><br /><searchLink fieldCode="AR" term="%22Nencioli%2C+Francesco%22">Nencioli, Francesco</searchLink><br /><searchLink fieldCode="AR" term="%22Airs%2C+Ruth%22">Airs, Ruth</searchLink><br /><searchLink fieldCode="AR" term="%22Thomas%2C+Crystal S%2E%22">Thomas, Crystal S.</searchLink><br /><searchLink fieldCode="AR" term="%22Schlüter%2C+Louise%22">Schlüter, Louise</searchLink> – Name: TitleSource Label: Source Group: Src Data: Earth System Science Data; 2025, Vol. 17 Issue 2, p493-516, 24p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22HIGH+performance+liquid+chromatography%22">HIGH performance liquid chromatography</searchLink><br /><searchLink fieldCode="DE" term="%22COLLOIDAL+carbon%22">COLLOIDAL carbon</searchLink><br /><searchLink fieldCode="DE" term="%22OPTICAL+properties%22">OPTICAL properties</searchLink><br /><searchLink fieldCode="DE" term="%22PIGMENTS%22">PIGMENTS</searchLink><br /><searchLink fieldCode="DE" term="%22PHYTOPLANKTON%22">PHYTOPLANKTON</searchLink><br /><searchLink fieldCode="DE" term="%22CHLOROPHYLL%22">CHLOROPHYLL</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In situ measurements of particulate inherent optical properties (IOPs) – absorption (ap(λ)), scattering (bp(λ)), and beam attenuation (cp(λ)) – are crucial for the development of optical algorithms that retrieve biogeochemical quantities such as chlorophyll a , particulate organic carbon (POC), and total suspended matter (TSM). Here we present a compilation of particulate absorption–attenuation spectrophotometric data measured underway on nine Atlantic Meridional Transect (AMT) cruises between 50° N and 50° S from 2009–2019. The compilation includes coincident high-performance liquid chromatography (HPLC) phytoplankton pigment concentrations, which are used to calibrate transects of total chlorophyll a (Tot_Chl_a) concentrations derived from the ap(λ) line-height method. The IOP data are processed using a consistent methodology and include propagated uncertainties for each IOP variable, uncertainty quantification for the Tot_Chl_a concentrations based on HPLC match-ups, application of consistent quality-control filters, and standardization of output data fields and formats. The total IOP dataset consists of ∼310000 measurements at a 1 min binning (∼270000 hyper-spectral) and >700 coincident HPLC pigment surface samples (∼600 of which are coincident with hyper-spectral IOPs). We present the geographic variation in the IOPs, HPLC phytoplankton pigments, and ap -derived Tot_Chl_a concentrations which are shown to have uncertainties between 8 % and 20 %. Additionally, to stimulate further investigation of accessory pigment extraction from ap(λ) , we quantify pigment correlation matrices and identify spectral characteristics of end-member ap(λ) spectra, where accessory pigment groupings are present in higher concentrations relative to Tot_Chl_a. All data are made publicly available in SeaBASS and NetCDF formats via the following links: https://seabass.gsfc.nasa.gov/archive/PML/AMT and 10.5281/zenodo.12527954. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Earth System Science Data is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5194/essd-17-493-2025 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 24 StartPage: 493 Subjects: – SubjectFull: HIGH performance liquid chromatography Type: general – SubjectFull: COLLOIDAL carbon Type: general – SubjectFull: OPTICAL properties Type: general – SubjectFull: PIGMENTS Type: general – SubjectFull: PHYTOPLANKTON Type: general – SubjectFull: CHLOROPHYLL Type: general Titles: – TitleFull: A compilation of surface inherent optical properties and phytoplankton pigment concentrations from the Atlantic Meridional Transect. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jordan, Thomas M. – PersonEntity: Name: NameFull: Dall'Olmo, Giorgio – PersonEntity: Name: NameFull: Tilstone, Gavin – PersonEntity: Name: NameFull: Brewin, Robert J. W. – PersonEntity: Name: NameFull: Nencioli, Francesco – PersonEntity: Name: NameFull: Airs, Ruth – PersonEntity: Name: NameFull: Thomas, Crystal S. – PersonEntity: Name: NameFull: Schlüter, Louise IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 18663508 Numbering: – Type: volume Value: 17 – Type: issue Value: 2 Titles: – TitleFull: Earth System Science Data Type: main |
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