dc.contributor.author | Xing, Xiaogang | |
dc.contributor.author | Boss, Emmanuel | |
dc.contributor.author | Zhang, Jie | |
dc.contributor.author | Chai, Fei | |
dc.date.accessioned | 2023-02-28T17:03:56Z | |
dc.date.available | 2023-02-28T17:03:56Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Xing, X., Boss, E., Zhang, J. an Chai, F. (2020) Evaluation of Ocean Color Remote Sensing Algorithms for Diffuse Attenuation Coefficients and Optical Depths with Data Collected on BGC-Argo Floats. Remote Sensing,12: 2367, 22pp. DOI: https://doi.org/10.3390/rs12152367 | en_US |
dc.identifier.uri | https://repository.oceanbestpractices.org/handle/11329/2144 | |
dc.description.abstract | The vertical distribution of irradiance in the ocean is a key input to quantify processes
spanning from radiative warming, photosynthesis to photo-oxidation. Here we use a novel dataset of
thousands local-noon downwelling irradiance at 490 nm (Ed(490)) and photosynthetically available
radiation (PAR) profiles captured by 103 BGC-Argo floats spanning three years (from October 2012 to
January 2016) in the world’s ocean, to evaluate several published algorithms and satellite products
related to di use attenuation coe cient (Kd). Our results show: (1) MODIS-Aqua Kd(490) products
derived from a blue-to-green algorithm and two semi-analytical algorithms show good consistency
with the float-observed values, but the Chla-based one has overestimation in oligotrophic waters;
(2) The Kd(PAR) model based on the Inherent Optical Properties (IOPs) performs well not only at
sea-surface but also at depth, except for the oligotrophic waters where Kd(PAR) is underestimated
below two penetration depth (2zpd), due to the model’s assumption of a homogeneous distribution
of IOPs in the water column which is not true in most oligotrophic waters with deep chlorophyll-a
maxima; (3) In addition, published algorithms for the 1% euphotic-layer depth and the depth of
0.415 mol photons m-2 d-1 isolume are evaluated. Algorithms based on Chla generally work well
while IOPs-based ones exhibit an overestimation issue in stratified and oligotrophic waters, due to
the underestimation of Kd(PAR) at depth. | en_US |
dc.language.iso | en | en_US |
dc.rights | Attribution 4.0 International | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject.other | Diffuse attenuation coefficient | en_US |
dc.subject.other | Satellite product assessment | en_US |
dc.subject.other | Euphotic layer depth | en_US |
dc.subject.other | Isolume depth | en_US |
dc.subject.other | Optical properties | en_US |
dc.title | Evaluation of Ocean Color Remote Sensing Algorithms for Diffuse Attenuation Coefficients and Optical Depths with Data Collected on BGC-Argo Floats. | en_US |
dc.type | Journal Contribution | en_US |
dc.description.refereed | Refereed | en_US |
dc.format.pagerange | 22pp. | en_US |
dc.identifier.doi | https://doi.org/10.3390/rs12152367 | |
dc.subject.parameterDiscipline | Other physical oceanographic measurements | en_US |
dc.subject.dmProcesses | Data analysis | en_US |
dc.bibliographicCitation.title | Remote Sensing | en_US |
dc.bibliographicCitation.volume | 12, | en_US |
dc.bibliographicCitation.issue | Article 2367 | en_US |
dc.description.sdg | 14.a | en_US |
dc.description.maturitylevel | Pilot or Demonstrated | en_US |
dc.description.adoption | Validated (tested by third parties) | en_US |
dc.description.methodologyType | Reports with methodological relevance | en_US |
obps.contact.contactemail | xing@sio.org.cn | |
obps.resourceurl.publisher | https://www.mdpi.com/2072-4292/12/15/2367?type=check_update&version=2 | |