Variability of the atmospheric ozone over Kathmandu using ground-based measurements

Authors

  • NP Chapagain Department of Physics, Patan Multiple Campus, Tribhuvan University, Lalitpur

DOI:

https://doi.org/10.3126/bibechana.v13i0.13311

Keywords:

Brewer spectrophotometer, Dobson unit, Ozone depletion, Stratosphere, Total ozone

Abstract

Measurement of the atmospheric total ozone over Kathmandu (27.67°N, 85.29°E) was carried out with a Brewer Spectrophotometer from February 2001 through February 2002. The total ozone data obtained from Brewer instrument are analyzed to study the daily variations of total ozone over Kathmandu on different seasons. The results reveal that day-to-day variations of the total ozone over Kathmandu are seasonal dependent. Total ozone values are relatively high in summer and spring seasons (up to 327 DU) and low  (~213 DU) during the winter season. The low ozone concentration would be due to chemical and dynamic destruction processes related to the low temperature and less active photochemical reaction as less intense solar radiations are received during winter season.

BIBECHANA 13 (2016) 9-17

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Published

2015-12-03

How to Cite

Chapagain, N. (2015). Variability of the atmospheric ozone over Kathmandu using ground-based measurements. BIBECHANA, 13, 9–17. https://doi.org/10.3126/bibechana.v13i0.13311

Issue

Vol. 13 (2016)

Section

Research Articles

License

This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.