Ultraviolet radiation measurements at Pune

Authors

  • O. CHACKO Central Radiation Laboratory, Meteorological Office, Pune
  • C. G. RAHALKAR Central Radiation Laboratory, Meteorological Office, Pune
  • V. DESIKAN Central Radiation Laboratory, Meteorological Office, Pune

DOI:

https://doi.org/10.54302/mausam.v34i4.2523

Abstract

Results of measurements of global solar ultraviolet radiation in the -wave length range 290-390 nm received from the sun and sky on a horizontal surface (OUVR) using an Eppley ultraviolet radiometer at Pune (18 N, 73 E) during 1972-73 are presented.

 

During the year on an average about 16 cal/cm2 are received daily as GUVR, the daily values ranging from 12-20 cal/cm2/day with lower values in winter, due to the lower solar- elevation angles at this time. The proportion of GUVR to global solar radiation (OR) is about 4 per cent with lower values, again in winter. This ratio also varies during the day, being a maximum at noon.

 

The mean hourly values of GUVR is about 3.9 cal/cm2/hour at noon in summer and about 2.0 cal/cm2/hour in winter. In general more GUVR is received in the forenoon than in the afternoon.

 

No marked influence of turbidity on the OUVR has been observed. However, the hourly values around noon show a decreasing trend with increasing turbidity.

Downloads

Published

01-10-1983

How to Cite

[1]
O. CHACKO, C. G. RAHALKAR, and V. DESIKAN, “Ultraviolet radiation measurements at Pune”, MAUSAM, vol. 34, no. 4, pp. 425–430, Oct. 1983.

Issue

Vol. 34 No. 4 (1983): MAUSAM

Section

Shorter Contribution

License

Copyright (c) 2021 MAUSAM

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

All articles published by MAUSAM are licensed under the Creative Commons Attribution 4.0 International License. This permits anyone.

Anyone is free:

  • To Share - to copy, distribute and transmit the work
  • To Remix - to adapt the work.

Under the following conditions:

  • Share - copy and redistribute the material in any medium or format
  • Adapt - remix, transform, and build upon the material for any purpose, even
    commercially.