So Mi Kang, Ki Joon Heo, Byung Uk Lee

  • Aerosol and Bioengineering Laboratory, College of Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea

Received: December 17, 2014
Revised: May 1, 2015
Accepted: July 12, 2015
Download Citation: ||  

  • Download: PDF

Cite this article:
Kang, S.M., Heo, K.J. and Lee, B.U. (2015). Why Does Rain Increase the Concentrations of Environmental Bioaerosols during Monsoon?. Aerosol Air Qual. Res. 15: 2320-2324.


  • Rain increased the concentration of bioaerosols in air environments. 
  • Four hypotheses for the effect of rain on bioaerosols were tested via experiments. 
  • Transportation of bioaerosols can increase the concentration during rain events. 
  • Reduction of UV irradiation intensity can increase the concentration of bioaerosols.



Rain has been known to remove aerosol particles from the atmosphere; however, it was recently discovered that rain events during monsoon increase the concentrations of culturable bioaerosols in ground-level air environments. To explain this phenomenon, several hypotheses were tested via bioaerosol measurement experiments in this study. The experimental measurements with limited variations of environmental conditions revealed that the phenomenon of the effect of rain on bioaerosols might be caused by the transportation of bioaerosols by falling raindrops from higher altitude to the ground, where the bioaerosols accumulate, as well as by the decrease in UV irradiation intensity during rain events. We studied the effects of several environmental parameters on bioaerosol concentrations.

Keywords: Bioaerosol; Monsoon; Concentration; PM10; Rain

Share this article with your colleagues 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

77st percentile
Powered by
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.