Data

Southern Ocean summer chlorophyll-a climatology

Australian Ocean Data Network
Johnson, R., Sumner, M. and Raymond, B. ; JOHNSON, ROB ; SUMNER, MICHAEL ; RAYMOND, BEN
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/records/AAS_4343_so_chlorophyll&rft.title=Southern Ocean summer chlorophyll-a climatology&rft.identifier=http://data.aad.gov.au/metadata/records/AAS_4343_so_chlorophyll&rft.publisher=Australian Antarctic Data Centre&rft.description=This dataset is a climatological summer chlorophyll-a layer for the Southern Ocean south of 40S, following the OC3M algorithm of Johnson et al. (2013). The climatology was calculated from level-3 binned MODISA RRS products spanning the 2002/03 to 2015/16 austral summer seasons (summer taken as day 355 to day 80).Progress Code: completed&rft.creator=Johnson, R., Sumner, M. and Raymond, B. &rft.creator=JOHNSON, ROB &rft.creator=SUMNER, MICHAEL &rft.creator=RAYMOND, BEN &rft.date=2017&rft.coverage=westlimit=-180; southlimit=-90; eastlimit=180; northlimit=-40&rft.coverage=westlimit=-180; southlimit=-90; eastlimit=180; northlimit=-40&rft_rights=This metadata record is publicly available.&rft_rights=These data are publicly available for download from the provided URL.&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=When using these data, please cite: Johnson R, Strutton PG, Wright SW, McMinn A, Meiners KM (2013), Three improved satellite chlorophyll algorithms for the Southern Ocean. J Geophys Res Oceans 118:3694-3703. doi:10.1002/jgrc.20270 This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4343_so_chlorophyll when using these data. http://creativecommons.org/licenses/by/4.0/).&rft_rights=Portable Network Graphic&rft_rights=https://i.creativecommons.org/l/by/3.0/88x31.png&rft_rights=Creative Commons by Attribution logo&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights=Legal code for Creative Commons by Attribution 4.0 International license&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_subject=oceans&rft_subject=EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL&rft_subject=Chlorophyll&rft_subject=Phytoplankton biomass&rft_subject=AQUA > Earth Observing System, AQUA&rft_subject=ACE/CRC&rft_subject=AMD/AU&rft_subject=AMD&rft_subject=CEOS&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=OCEAN > SOUTHERN OCEAN&rft.type=dataset&rft.language=English Access the data
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https://creativecommons.org/licenses/by/4.0/legalcode

When using these data, please cite: Johnson R, Strutton PG, Wright SW, McMinn A, Meiners KM (2013), Three improved satellite chlorophyll algorithms for the Southern Ocean. J Geophys Res Oceans 118:3694-3703. doi:10.1002/jgrc.20270

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4343_so_chlorophyll when using these data.
http://creativecommons.org/licenses/by/4.0/).

Attribution 4.0 International (CC BY 4.0)

https://creativecommons.org/licenses/by/4.0/legalcode

This metadata record is publicly available.

These data are publicly available for download from the provided URL.

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Attribution 4.0 International (CC BY 4.0)

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Brief description

This dataset is a climatological summer chlorophyll-a layer for the Southern Ocean south of 40S, following the OC3M algorithm of Johnson et al. (2013). The climatology was calculated from level-3 binned MODISA RRS products spanning the 2002/03 to 2015/16 austral summer seasons (summer taken as day 355 to day 80).

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Progress Code: completed

Notes

Purpose
From the abstract of the published paper: Remote sensing of Southern Ocean chlorophyll concentrations is the most effective way to detect large-scale changes in phytoplankton biomass driven by seasonality and climate change. However, the current algorithms for the Sea-viewing Wide Field-of-view Sensor (SeaWiFS, algorithm OC4v6), the Moderate Resolution Imaging Spectroradiometer (MODIS-Aqua, algorithm OC3M), and GlobColour significantly underestimate chlorophyll concentrations at high latitudes. Here, we use a long-term data set from the Southern Ocean (20 degrees - 160 degrees E) to develop more accurate algorithms for all three of these products in southern high-latitude regions. These new algorithms improve in situ versus satellite chlorophyll coefficients of determination (r 2 ) from 0.27 to 0.46, 0.26 to 0.51, and 0.25 to 0.27, for OC4v6, OC3M, and GlobColour, respectively, while addressing the underestimation problem. This study also revealed that pigment composition, which reflects species composition and physiology, is key to understanding the reasons for satellite chlorophyll underestimation in this region. These significantly improved algorithms will permit more accurate estimates of standing stocks and more sensitive detection of spatial and temporal changes in those stocks, with consequences for derived products such as primary production and carbon cycling.

Data time period: 2002-12-21 to 2016-03-20

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180,-40 180,-86 0,-86 -180,-86 -180,-40 0,-40 180,-40

0,-65

text: westlimit=-180; southlimit=-90; eastlimit=180; northlimit=-40

Subjects
ACE/CRC | AMD | AMD/AU | AQUA > Earth Observing System, AQUA | CEOS | Chlorophyll | EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL | GEOGRAPHIC REGION > POLAR | OCEAN > SOUTHERN OCEAN | Phytoplankton biomass | oceans |

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uri : http://data.aad.gov.au/eds/4423/download

Identifiers
  • global : AAS_4343_so_chlorophyll
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