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Showing 1–15 of 15 results
Advanced filters: Author: Peter Strutton Clear advanced filters

  • The Southern Annular Mode (SAM) has shifted towards its positive phase owing to ozone depletion and increasing greenhouse gas concentrations. This Review discusses the dynamics, trends and projections of the SAM and how these will affect southern high-latitude climate, including Southern Ocean circulation, carbon cycling and the Antarctic cryosphere.

    • Ariaan Purich
    • Julie M. Arblaster
    • Tilo Ziehn
    Reviews
    Nature Reviews Earth & Environment
    Volume: 7, P: 24-42

  • The nutrients that limit phytoplankton growth also influence fluorescence. The nature of these relationships in the tropical Pacific are now established, allowing fluorescence measurements to determine the factors that limit phytoplankton growth in this region more accurately, and on a larger spatial scale, than has been possible previously.

    • Michael J. Behrenfeld
    • Kirby Worthington
    • Donald M. Shea
    Research
    Nature
    Volume: 442, P: 1025-1028

  • Nitrate observations over 11 years from autonomous biogeochemical ocean profiling combined with a Southern Hemisphere dust simulation find that iron supplied by dust supports about 30% of Southern Ocean productivity.

    • Jakob Weis
    • Zanna Chase
    • Sonya L. Fiddes
    Research
    Nature
    Volume: 629, P: 603-608

  • Oceanic deposition of wildfire aerosols can enhance marine productivity, as supported here by satellite and in situ profiling floats data showing that emissions from the 2019–2020 Australian wildfires fuelled phytoplankton blooms in the Southern Ocean.

    • Weiyi Tang
    • Joan Llort
    • Nicolas Cassar
    Research
    Nature
    Volume: 597, P: 370-375

  • Eddies are common ocean features that isolate large swaths of seawater, but it is unclear how they influence productivity of phytoplankton trapped inside. Here Ellwood and colleagues use stable and radiogenic isotopes to characterize a Southern Ocean eddy, finding vanishingly low iron concentrations that drive low productivity across the region.

    • Michael J. Ellwood
    • Robert F. Strzepek
    • Philip W. Boyd
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Marine heatwaves are likely to intensify in a warmer world, but prediction of these events is hampered by course-scale modeling. Here the authors develop a fine scale, global model which shows that marine heatwaves will amplify with greater spatial variability, particularly at western boundary regions.

    • Hakase Hayashida
    • Richard J. Matear
    • Xuebin Zhang
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • Satellites can observe marine phytoplankton, but observations are sparse in seasonally dark, cloudy environments like the Southern Ocean. These authors use Argo floats to track the fate of phytoplankton blooms off Antarctica and determine 10% of biomass is exported, while 90% is prey to grazing.

    • Sébastien Moreau
    • Philip W. Boyd
    • Peter G. Strutton
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • Frontal activity and chlorophyll concentrations have increased in high latitude hotspots of ocean warming but have decreased in equatorial and subtropical gyre hotspots, suggest changes in satellite remotely sensed sea surface temperature and chlorophyl concentration between 2003 and 2020.

    • Kai Yang
    • Amelie Meyer
    • Andrew M. Fischer
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 4, P: 1-11