The Resplandy Research Group

  • Phytoplankton bloom near Alaska’s Pribilof Islands

    NASA Earth Observatory images by Jesse Allen and Norman Kuring, using Landsat 8 data from the U.S. Geological Survey. Instrument(s): Landsat 8 - OLI
    Phytoplankton bloom near Alaska’s Pribilof Islands

    Phytoplankton bloom near Alaska’s Pribilof Islands on September 22, 2014. The Pribilofs are surrounded by nutrient-rich waters in the Bering Sea. The milky green and light blue shading of the water indicates the presence of vast populations of microscopic phytoplankton—mostly coccolithophores, which have chalky calcite scales. Such phytoplankton form the foundation of a tremendously productive habitat for fish and birds. Caption by Kasha Patel and Mike Carlowicz.

  • Satellite chorophyll offshore New Zealand (source: NASA Aqua MODIS)

    NASA image by Jeff Schmaltz, MODIS Rapid Response Team. Instrument(s): Aqua – MODIS acquired October 25, 2009
    Satellite chorophyll offshore New Zealand (source: NASA Aqua MODIS)

    Satellite chorophyll offshore New Zealand (source: NASA Aqua MODIS).

  • Satellite surface chlorophyll spiraling around eddies in the Gulf of Alaska

    NASA image by Norman Kuring, NASA’s Ocean Color web. Instrument(s): Suomi NPP – VIIRS acquired June 9, 2016
    Satellite surface chlorophyll spiraling around eddies in the Gulf of Alaska

    Satellite surface chlorophyll spiraling around eddies in the Gulf of Alaska. Phytoplankton blooms in response to the iron supply by melt water along the coast and transport offshore by eddies. Source: NASA Suomi NPP-VIIRS acquired on June 9th 2016.

  • Satellite chorophyll in the Indian Ocean (source: NASA Aqua MODIS)

    NASA image, NASA Earth Observatory. Instrument(s): Aqua – MODIS
    Satellite chorophyll in the Indian Ocean (source: NASA Aqua MODIS)

    Satellite chorophyll in the Indian Ocean (source: NASA Aqua MODIS).  Eddies and filaments promotes the growth of phytoplankton during the winter monsoon by supplying nutrients and relieving light limitation (Resplandy et al., 2009).

2022 Laure Resplandy headshot

Professor Laure Resplandy is a biogeochemical oceanographer.  Her research goals are to understand how climate and ocean physics influence marine biogeochemistry and ecosystems and how these changes can in turn impact the Earth climate.  Prof. Resplandy's approach is to design and develop numerical models (from ocean regions to global climate system) and statistical tools to interpret in-situ and satellite observations.

RESEARCH ACTIVITIES

  • Climate change and global carbon cycle.
     

  • Changes in ocean oxygenation, oxygen minimum zones and coastal hypoxia.
     

  • Influence of ocean physics on ecosystems and biogeochemical fluxes.
     

  • Climate modeling, ocean modeling from small-scale (1-100 km) to large-scale.

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IN THE NEWS
Greenish swirls along the brown coastline of Bonney Coast, AU
Researchers Compare Observations Versus Modeling of Coastal Carbon Cycle
March 4, 2024

While storing carbon dioxide, the coastal ocean also releases methane and nitrous oxide. New research shows that understanding the impact of coastal oceans on climate requires more research into these fluxes and how they counteract each other.

figure c showing the Atlantic Ocean average oxygen concentrations with red and blue color codes and depth levels with texture
Hydrological cycle amplification reshapes warming-driven oxygen loss in the Atlantic Ocean
Jan. 8, 2024

The loss of oxygen from the ocean due to warming is not ubiquitous. In the Atlantic Ocean there has been no oxygen loss or gain in the subtropics over the past six decades (top 1 km, see Figure). Hogikyan and co-authors show that the amplification of the hydrological cycle, a response to climate change that results in a ‘salty-get-saltier,…

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