Murugavel, P. ; Gopalakrishnan, V. ; Pant, Vimlesh ; Kamra, A. K. (2008) Airborne measurements of submicron aerosols across the coastline at Bhubaneswar during ICARB Journal of Earth System Science, 117 (1). pp. 273-280. ISSN 0253-4126
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Official URL: http://www.ias.ac.in/jessci/jul2008/jess80.pdf
Related URL: http://dx.doi.org/10.1007/s12040-008-0020-3
Abstract
Airborne measurements of the number concentration and size distribution of aerosols from 13 to 700 nm diameter have been made at four vertical levels across a coastline at Bhubaneswar (20°25'N, 85°83'E) during the Integrated Campaign for Aerosols, gases and Radiation Budget (ICARB) programme conducted in March-April 2006. The measurements made during the constant-level flights at 0.5, 1, 2 and 3 km altitude levels extend ~100 km over land and ~150km over ocean. Aerosol number concentrations vary from 2200 to 4500 cm-3 at 0.5 km level but are almost constant at ~6000 cm-3 and ~800 cm-3 at 2 and 3 km levels, respectively. At 1km level, aerosol number concentration shows a peak of 18,070 cm-3 around the coastline. Most of the aerosol size distribution curves at 0.5 km and 1 km levels are monomodal with a maxima at 110 nm diameter which shifts to 70 nm diameter at 2 and 3 km levels. However, at the peak at 1 km level, number concentration has a bimodal distribution with an additional maximum appearing in nucleation mode. It is proposed that this maxima in nucleation mode at 1 km level may be due to the formation and transport of new particles from coastal regions.
Item Type: | Article |
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Source: | Copyright of this article belongs to Indian Academy of Sciences. |
Keywords: | Atmospheric Aerosols; Coastal Aerosols; New Particle Formation; Nucleation Mode; Aerosols; Atmospheric Sciences |
ID Code: | 16505 |
Deposited On: | 15 Nov 2010 09:32 |
Last Modified: | 17 May 2016 01:14 |
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