• Yangtze discharge captured by GOCI/COMS 9

    Level-1B composite image (5-11 April 2011) of eastern China, South Korea and Japan, captured by the Korean GOCI instrument on board the geostationary COMS satellite (image processed by KOSC, Korea Ocean Satellite Centre). A turbid plume of resuspended sediment originating from the discharge of the Yangtze River is clearly visible on the left hand side of the image. Resuspended sediments are prevalent in winter and spring, when strong seasonal winds cause mixing of the water column. Image provided by Dr. Yu-Hwan Ahn, KORDI (Korea Ocean Research and Development Institute).

  • Great Whirl off Somali Coast

    This chlorophyll-a image captured by ISRO's OCEANSAT-2 OCM instrument on 12 October 2010 clearly shows the Great Whirl off the Somali coast. The Great Whirl is a mesoscale feature (~450 km) associated with high chlorophyll concentration along its periphery. This circulation is caused by the north easterly acceleration of the Somali current through the Socotra passage around Socotra Islands. Such features are commonly seen in ocean-colour data during the transition period of the southwest to northeast monsoon in this region. Image provided by Prakash Chauhan, Indian Space Research Organisation (ISRO).

  • MODIS-Aqua

    MODIS-Aqua captured this image of large phytoplankton blooms (likely coccolithophores) surrounding St. Matthew Island in the Bering Sea, on 8 October 2014. Browner, sediment-laden waters are also visible along the coast of Alaska.

    Credit: NASA Ocean Biology Processing Group (OBPG)

  • View of the Bangladesh Coastline

    Captured by Envisat/MERIS sensor on 8 November 2003 showing the distribution of turbid suspended sediments in the Ganges delta.

    Credit: European Space Agency (ESA).

  • Colours of the Persian Gulf

    This beautiful, natural-colour image of the small nation of Bahrain and parts of eastern Saudi Arabia was captured by the high-resolution multispectral instrument on the Copernicus Sentinel-2A satellite on 18 September 2015. The striking variations of blue represent the shallow versus deep waters, with the presence of coral reefs.

    Copyright: Copernicus Sentinel data (2015)/ESA

  • ESA's Sentinel-2 Captures Eye of an Algal Storm

    ESA's Sentinel-2A captured this detailed image of an algal bloom in the middle of the Baltic Sea on 7 August 2015. The image, which has a spatial resolution of 10 m, reveals the bloom in exquisite detail as well as a ship heading into the ‘eye of this algal storm’. The ship’s wake can be seen as a straight dark line where the bloom has been disturbed by the ship’s propellers.

    Copyright: Copernicus Sentinel data (2015)/ESA

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