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Study of atmospheric refractivity prior to squall onset and its strong association with surface temperature and relative humidity over Kolkata (22°34′N, 88°22′E)

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Abstract

The paper presents the nature of variation of refractive index of atmospheric medium before the onset of squall over kolkata (22°34′N 88°22′E), India. The variation of the refractive index with surface temperature and relative humidity during squall is also presented. It is concluded that sharp decrease of the refractivity may be taken as a possible method of forecasting squall. This kind of study is very much helpful from the standpoint of aviation hazards and communication. Possible explanation for the observed results is also presented.

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Authors and Affiliations

  1. Department of Atmospheric Science, Calcutta University, 51/2 Hazra Road, Kolkata, 700019, West Bengal, India

    S. K. Midya, D. Ghosh, G. K. Das & H. Sarkar

  2. Indian Centre for Space Physics, 43 Chalantika, Garia Station Road, Kolkata, 700084, West Bengal, India

    S. K. Midya

  3. Regional Meteorological Centre, Kolkata, 700027, West Bengal, India

    G. K. Das

  4. Centre for Microwave and Millimeter Wave Research and Training, Institute of Radiophysics and Electronics, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata, 700009, West Bengal, India

    H. Sarkar

Authors
  1. S. K. Midya
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  2. D. Ghosh
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  3. G. K. Das
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  4. H. Sarkar
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Correspondence to S. K. Midya.

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Midya, S.K., Ghosh, D., Das, G.K. et al. Study of atmospheric refractivity prior to squall onset and its strong association with surface temperature and relative humidity over Kolkata (22°34′N, 88°22′E). Indian J Phys 87, 847–854 (2013). https://doi.org/10.1007/s12648-013-0304-6

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  • DOI: https://doi.org/10.1007/s12648-013-0304-6

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