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Studies in atmospheric radiation

A discussion of some observations of nocturnal radiation made at Poona and Sinhagad

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Summary

The paper discusses the results of measurements of nocturnal heat radiation received from the atmosphere at Poona and Sinhagad. The measurements were carried out in February and March 1935 with Angstrom pyrgeometers. Simultaneous measurements were made at the Agricultural Meteorological Observatory and the top of the tower of the Poona Meteorological Office and also from the latter and the top of Sinhagad, a hill 2,500 ft. above Poona level and distant 15 “ miles from Poona.

It is shown that on clear nights at all the three places there was a decrease of radiation from the atmosphere after sunset and that the decrease was a maximum at ground-level and minimum at Sinhagad. This decrease expressed as a fraction of the change in black body radiation corresponding to the change of temperature of the air near the instrument was on the average 0“47, but the ratio was smaller at lower levels than at higher. The results are discussed with reference to Angstrom’s formula for atmospheric radiation.

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References

  1. Angstrom, A., “Uber Variationen der atmospharischen Temperaturstrahlung,”Gerl. Beitr. z. Geoph., 1929,21, 145.

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Authors and Affiliations

  1. Agricultural Meteorology Section, Meteorological Office, Poona

    P. K. Raman

Authors
  1. P. K. Raman
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Additional information

Communicated by Dr. K. R. Ramanathan,d.sc.

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Raman, P.K. Studies in atmospheric radiation. Proc. Indian Acad. Sci. (Math. Sci.) 4, 243–253 (1936). https://doi.org/10.1007/BF03036084

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  • DOI: https://doi.org/10.1007/BF03036084

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