Temporal variability of 10-year global SeaWiFS time-series of phytoplankton chlorophyll a concentration
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Vantrepotte, V., and Mélin, F. 2009. Temporal variability of 10-year global SeaWiFS time-series of phytoplankton chlorophyll a concentration. – ICES Journal of Marine Science, 66: 1547–1556. The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) global dataset now offers a 10-year time-series of a consistent, well-calibrated, ocean colour record suitable to analyse temporal variability. The relative importance of the seasonal term in the chlorophyll a (Chl a) concentration signal is first assessed using statistical techniques of temporal decomposition. The emphasis is on the Census method II (X-11) approach, which allows year-to-year variations in the seasonal component. The seasonality detected in the SeaWiFS Chl a record is analysed through a generic province-based classification of marine ecosystems and at global scale and is found very variable spatially. Working with 5′-resolution gridded Chl a products, the contribution of the seasonal component derived from X-11 amounts to 64% of the total variance, compared with only 36% if a fixed annual cycle is assumed. The capacity of X-11 to capture interannual variations in seasonality is used to diagnose the stability of the Chl a seasonal cycle. Finally, linear changes in Chl a concentration observed after a decade of continuous ocean colour record agree globally with previous observations on shorter series. Significant changes of both signs are detected in various regions of the world’s oceans, but primarily a general decrease of Chl a in the mid-ocean gyres.
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Decreasing Chl-a concentrations have been recently reported in all five subtropical gyres.
“Decreasing Chl-a concentrations have been recently reported in all five subtropical gyres (Martinez et al., 2020;Signorini et al., 2015;Vantrepotte & Mélin, 2009).”
From Recent Trends in SST, Chl‐<i>a</i>, Productivity and Wind Stress in Upwelling and Open Ocean Areas in the Upper Eastern North Atlantic Subtropical Gyre (2021) · cites this paper as Vantrepotte & Mélin, 2009
The Trend analysis section reports decreasing Chl-a in most subtropical gyre areas, supporting the general pattern. It does not establish a decrease across all five gyres: it also reports an increase in the northern South Atlantic Gyre and opposite trends within some gyre provinces. Page numbers are unavailable in our copy. (LLM, conf=0.88)
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Siemer, J. P., Machín, F., González‐Vega, A., Arrieta, J. M., Gutiérrez‐Guerra, M. A., Pérez‐Hernández, M. D., Vélez‐Belchí, P., Hernández‐Guerra, A., & Fraile‐Nuez, E. (2021) · Journal of Geophysical Research: Oceans · doi:10.1029/2021jc017268 · Cited by 50 · see citing works
- Authors
- Vantrepotte, V., & Mélin, F.
- Affiliations
- European Commission (BE)
- Corresponding author
- Vantrepotte, V.
- Venue
- ICES Journal of Marine Science
- Publisher
- Oxford University Press (OUP)
- Published
- 2009-04-24
- Volume
- 66
- Issue
- 7
- Pages
- 1547-1556
- ISSN
- 1054-3139 (ISSN-L)
- 1095-9289
- OpenAlex
- W2152052505
- Cited by
- 115
- References
- 1
- Citations by year
- 2026: 4 · 2025: 8 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 6 · 2020: 4 · 2019: 6 · 2018: 2 · 2017: 5 · 2016: 10 · 2015: 9 · 2014: 13 · 2013: 10 · 2012: 4
- FWCI
- 5.35
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- ICES Journal of Marine Science (publishedVersion)
- Joint Research Centre (European Commission) (submittedVersion)
- Funders
- National Aeronautics and Space Administration
- Topics
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Keywords
- phytoplankton chlorophyll a, SeaWiFS, ocean color remote sensing, temporal variation, seasonal variation, interannual variability
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