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      https://www.ias.ac.in/article/fulltext/jess/126/05/0070

    • Keywords

       

      Sea ice concentration; sea ice thickness; sea surface temperature; sea surface salinity; southern Ocean.

    • Abstract

       

      An eddy-resolving coupled ocean sea-ice modelling is carried out in the Southern Ocean region (9–78E; 51–71S) using the MITgcm. The model domain incorporates the Indian Antarctic stations, Maitri (11.7E; 70.7S) and Bharati (76.1E; 69.4S). The realistic simulation of the surface variables, namely, sea surface temperature (SST), sea surface salinity (SSS), surface currents, sea ice concentration (SIC) and sea ice thickness (SIT) is presented for the period of 1997–2012. The horizontal resolution of the model varies between 6 and 10 km. The highest vertical resolution of 5 m is taken near the surface, which gradually increases with increasing depths. The seasonal variability of the SST, SSS, SIC and currents is compared with the available observations in the region of study. It is found that the SIC of the model domain is increasing at a rate of 0.09% per month (nearly 1% per year), whereas, the SIC near Maitri and Bharati regions is increasing at a rate of 0.14 and 0.03% per month, respectively. The variability of the drift of the sea-ice is also estimated over the period of simulation. It is also found that the sea ice volume of the region increases at the rate of 0.0004 km3 per month (nearly 0.005 km3 per year). Further, it is revealed that the accumulation of sea ice around Bharati station is more as compared to Maitri station.

    • Author Affiliations

       

      Anurag Kumar1 Suneet Dwivedi1 D Ram Rajak2

      1. K Banerjee Centre of Atmospheric and Ocean Studies and M N Saha Centre of Space Studies, University of Allahabad, Allahabad 211 002, India.
      2. Space Application Centre, Indian Space Research Organisation, Ahmedabad 380 015, India.
    • Dates

       
  • Journal of Earth System Science | News

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