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Patterns in the temporal complexity of global chlorophyll concentration

Author

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  • Vitul Agarwal

    (University of Rhode Island)

  • Jonathan Chávez-Casillas

    (University of Rhode Island)

  • Keisuke Inomura

    (University of Rhode Island)

  • Colleen B. Mouw

    (University of Rhode Island)

Abstract

Decades of research have relied on satellite-based estimates of chlorophyll-a concentration to identify oceanographic processes and plan in situ observational campaigns; however, the patterns of intrinsic temporal variation in chlorophyll-a concentration have not been investigated on a global scale. Here we develop a metric to quantify time series complexity (i.e., a measure of the ups and downs of sequential observations) in chlorophyll-a concentration and show that seemingly disparate regions (e.g., Atlantic vs Indian, equatorial vs subtropical) in the global ocean can be inherently similar. These patterns can be linked to the regularity of chlorophyll-a concentration change and the likelihood of anomalous events within the satellite record. Despite distinct spatial changes in decadal chlorophyll-a concentration, changes in time series complexity have been relatively consistent. This work provides different metrics for monitoring the global ocean and suggests that the complexity of chlorophyll-a time series can be independent of its magnitude.

Suggested Citation

  • Vitul Agarwal & Jonathan Chávez-Casillas & Keisuke Inomura & Colleen B. Mouw, 2024. "Patterns in the temporal complexity of global chlorophyll concentration," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45976-8
    DOI: 10.1038/s41467-024-45976-8
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    References listed on IDEAS

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    1. Daniel G. Boyce & Marlon R. Lewis & Boris Worm, 2010. "Global phytoplankton decline over the past century," Nature, Nature, vol. 466(7306), pages 591-596, July.
    2. Michael J. Behrenfeld & Robert T. O’Malley & David A. Siegel & Charles R. McClain & Jorge L. Sarmiento & Gene C. Feldman & Allen J. Milligan & Paul G. Falkowski & Ricardo M. Letelier & Emmanuel S. Bos, 2006. "Climate-driven trends in contemporary ocean productivity," Nature, Nature, vol. 444(7120), pages 752-755, December.
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