P. C. S. Devara , S. K. Saha, P. Ernest Raj, S. M. Sonbawne, K. K. Dani, Y. K. Tiwari, R. S. Maheskumar

  • Physical Meteorology and Aerology Division, Indian Institute of Tropical Meteorology, Dr. Homi Bhabha Road, NCL Post Office, Pashan, Pune 411 008, India

Received: May 1, 2005
Revised: May 1, 2005
Accepted: May 1, 2005
Download Citation: ||https://doi.org/10.4209/aaqr.2005.06.0007  

  • Download: PDF

Cite this article:
Devara, P.C.S., Saha, S.K., Raj, P.E., Sonbawne, S.M., Dani, K.K., Tiwari, Y.K. and Maheskumar, R.S. (2005). A Four-Year Climatology of Total Column Tropical Urban Aerosol, Ozone and Vapor Distributions over Pune, India. Aerosol Air Qual. Res. 5: 103-114. https://doi.org/10.4209/aaqr.2005.06.0007



The total column aerosol optical depth, ozone and water vapor using a MICRO-processor based Total Ozone Portable Spectrometer (MICROTOPS II) and its sun photometer version have been routinely measured at the Indian Institute of Tropical Meteorology (IITM), Pune (18° 32' N, 73° 51' E, 559 m above mean sea level), India, with a view to establish an aerosol climatology over this fast growing tropical urban station. This paper focuses on spectral-temporal variations, inter-annual variability and long-term trends in the above aerosol and pre-cursor gas distributions over Pune. Besides a strong wavelength dependence of aerosol optical depth (AOD), the radiometer derived total column ozone values are found to correlate well with those estimated from the NASA’s Earth Probe, Total Ozone Mapping Spectrometer (TOMS) satellite observations during the study period. The results also indicate a decreasing trend in all the above parameters, possibly due to absorbing anthropogenic aerosols during the study period, and lower Angstrom exponent, implying the prevalence of coarse-mode aerosol particles, originating from marine air mass, from around May to July, which is consistent with the ratio between the optical depths measured at 1020 and 380 nm.

Keywords: Aerosols and gases; multi-channel solar radiometer; optical extinction; climatological trends; urbanization

Don't forget to share this article 


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.

Latest coronavirus research from Aerosol and Air Quality Research

2018 Impact Factor: 2.735

5-Year Impact Factor: 2.827

SCImago Journal & Country Rank

Sign up to AAQR Newsletter

Sign up to receive latest research, letters to the editors, and review articles, delivered to your inbox every second week!