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 110nm 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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Aitken J A 1897 On some nuclei of cloudy condensation; Tran. R. Soc. Edin., XXXIX.
Baron P A and Willeke K 2001 Aerosol Measurement: Principle, Techniques and Applications, John Wiley & Sons, 56–60.
Bigg E K and Turvey D E 1978 Sources of natural atmospheric particles over Australia; Atmos. Environ. 12 1642–1655.
Blanchard D C and Woodcock A H 1980 Production, concentration, and vertical distribution of the sea salt aerosols; Ann. NY Acad. Sci. 353 186–200.
Clarke A D, Warner V J, Eisele F, Mauldin R L, Tanner T and Litchy M 1998 Particle production in the remote marine atmosphere: cloud outflow and subsidence during ACE-1; J. Geophys. Res. 103 16,397–16,409.
Clarke A D and Kapustin V N 2001 Aerosol climatology of the pacific: Production, transport and evolution of natural and anthropogenic particles, 8th European symposium on the Physico-chemical behaviour of atmospheric pollutants, Torino.
de Reus M R, Krejci, Williams J, Fischer H, Scheele R and Storm J 2001 Vertical and horizontal distributions of the aerosol number concentration and size distribution over the northern Indian Ocean; J. Geophys. Res. 106 28,629–28,641.
Deshpande C G and Kamra A K 1995 Extension of atmospheric aerosols over ocean around peninsular India in the southwest monsoon season; J. Aerosol Sci. 26 1169–1174.
Deshpande C G and Kamra A K 2002 Aerosol size distribution in the north and south Indian Ocean during northeast monsoon season; Atmos. Res. 65 51–76.
Fitzgerald J W 1991 Marine aerosols: a review; Atmos. Environ. 25A(3/4) 533–545.
Grenfell J L, Harrison R M, Allen A G, Shi J P, Penkett S A, O’Dowd C D, Smith M H, Hill M K, Robertson L, Hewitt C N, Davison B, Lewis A C, Creasy D J, Heard D E, Hebestreit K, Alicke B and James J 1999 An analysis of rapid increase in condensation nuclei concentrations at a remote coastal site in western Ireland; J. Geophys. Res. 104 13,771–13,780.
Hoppel W A and Frick G M 1990 Submicron aerosol size distribution measured over the tropical and south pacific; Atmos. Environ. 24A 645–659.
Jaenicke R 1993 Tropospheric aerosols; In: Aerosol-Cloud-Climate Interactions, P.V. Hobbs (ed.) Academic Press, Inc., pp 1–31.
O’Dowd C D 2002 On the spatial extent and evolution of coastal aerosol plumes; J. Geophys. Res. 107(D19) 8105, doi:10.1029/2001JD000422.
O’Dowd C D, Smith M H, Lowe J A, Davison B M, Hewitt C N and Harrison R M 1996 New particle formation in marine environment, Proc. of 14th Int. Conf. on Nucleation and Atmospheric aerosols; Kulmala M. and Wangner P. (eds) (New York: Pergamon Press) pp. 925–929.
O’Dowd C D, Davison B, Lowe J A, Smith M H, Harrison R M and Hewitt C N 1997 Biogenic sulphur emissions and inferred sulphate CCN concentrations in and around Antarctica; J. Geophys. Res. 102 12,839–12,854.
O’Dowd C D, Geever M, Hill M K, Smith M H and Jennings S G 1998 New particle formation: Nucleation rates and spatial scales in the clean marine coastal environment; Geophys. Res. Letts 25 1661–1664.
O’Dowd C D, McFiggens G M, Pirjola L, Creasey D J, Hoell C, Smith M H, Allan B J, Plane J M C, Heard D E, Lee J D, Pilling M J and Kulmala M 1999 On the photochemical production of new particles in the coastal boundary layer; Geophys. Res. Letts 26 1707–1710.
O’Dowd C D, Yoon Y J, Junkerman W, Aalto P, Kulmala M, Lihavainen H and Viisanen Y 2007 Airborne measurements of nucleation mode particles I: coastal nucleation and growth rates; Atmos. Chem. Phys. 7 1491–1501.
Pirjola L, O’Dowd C D, Brooks I M and Kulmula M 2000 Can new particle formation occur in the clean marine boundary layer? J. Geophys. Res. 105 26,531–26,546.
Paugam J Y 1975 Formation de noyaux Aitken dans l’air au-dessus de la zone littorale; J. de Recherches Atmospheriques 9 67–75.
Roberts G, Mauger G, Hadley O and Ramanathan V 2006 North American and Asian aerosols over the eastern Pacific Ocean and their role in regulating cloud condensation nuclei; J. Geophys. Res. 111 D13205, doi:10.1029/2005JD006661.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Murugavel, P., Gopalakrishnan, V., Pant, V. et al. Airborne measurements of submicron aerosols across the coastline at Bhubaneswar during ICARB. J Earth Syst Sci 117 (Suppl 1), 273–280 (2008). https://doi.org/10.1007/s12040-008-0020-3
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12040-008-0020-3