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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/096/03/0259-0266

    • Keywords

       

      Scatterometer; sea surface wind speed; optimum frequency; atmospheric transmittance

    • Abstract

       

      The problem of selecting the optimum operating frequency of a scatterometer, used for remote sensing of sea surface wind speed has been addressed by applying the criteria of maximum sensitivity of backscattering coefficient to wind speed as well as its correlation with wind speed. The backscattering coefficient values for sea surface were computed by the two-scale scattering theory. To compute the atmospheric transmittance, 753 clear sky atmospheres over Indian Ocean were used. While the correlation coefficient was uniform (0.94) throughout the frequency range of 1 to 30GHz, only frequencies above 5GHz were found sensitive enough to yield a wind speed accuracy of ±2msec−1 and better, the accuracy improving with frequency.

    • Author Affiliations

       

      Abhijit Sarkar1 Raj Kumar1 Mannil Mohan1

      1. Meteorology and Oceanography Division, Space Applications Centre, Ahmedabad - 380 053, India
    • Dates

       
  • Journal of Earth System Science | News

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