Abstract
Observations from aircraft, an island station, and tworesearch vessels are used to investigate the development of an elevated mixed layeror land plume over the Arabian sea during the Indian Ocean Experiment Intensive FieldPhase 1999 (INDOEX) through air mass modification. Much of the transport of aerosolsand gases occurs in this plume located above a well-mixed convective marine boundary layerwith a depth of 800–1000 m. The depth of the land plume isapproximately 2000 m with the peak ozone concentrations occurring near the centre of this land plume.Significant latitudinal variations in the concentration of ozone occur in the marineboundary layer and in the plume. Mean ozone concentrations in the land plume decreasedwith distance from the Indian coastline.
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References
Krishnan, R. and Ramanathan, V.: 2002, 'Evidence of Surface Cooling from Absorbing Aerosols', Geophys. Res. Lett. 29(54), 1–4.
Lelieveld, J., Crutzen, P. J., Ramanathan, V. et al.: 2001, 'The Indian Ocean Experiment:Widespread Air-Pollution from South and Southeast Asia', Science 291, 1031–1036.
Lobert, J. M., Johnson, B. J., Oltmans, S. J., Satheesh, S. K., and Harris, J. M.: 1999, Ozone Soundings over Kaashidhoo, the Maldives, INDOEX Science Workshop, Utrecht, The Netherlands.
Manghnani, V., Raman, S., Niyogi, D. S., Parameshwara, V., Morrison, J. M., and Raman, S. V.: 2000, 'Marine Boundary-Layer Variability over the Indian Ocean during INDOEX (1998)', Boundary-Layer Meteorol. 97, 411–430.
Rajeev, K., Ramanathan, V., and Meywerk, M.: 2000, 'Regional Aerosol Distribution and its Long Range Transport over the Indian Ocean', J. Geophys. Res. 105, 2029–2043.
Raman, S., Niyogi, D., Simpson, M., and Pelon, J.: 2002, 'Dynamics of the Elevated Land Plume over the Arabian Sea and the Northern Indian Ocean during NortheasterlyMonsoon (INDOEX)', Geophys. Res. Lett. 29, 641–644.
Raman, S., Templeman, B., Templeman, S., Murthy, A. B., Singh, M. P., Agarwaal, P., Nigam, S., Prabhu, A., and Ameenullah, S.: 1990, 'Observation of Mean Boundary Layer Structure and Turbulence during Pre-Monsoon and Monsoon Periods in India', Atmos. Environ. 24A, 723–734.
Ramanathan, V., et al.: 2001, 'The Indian Ocean Experiment: An Integrated Analysis of the Climate Forcing and Effects of the Great Indo-Asian Haze', J. Geophys. Res. 106(D22), 28,371–28,398.
Ramanathan, V., Crutzen, P., Coakley, J. et al.: 1995, Indian Ocean Experiment (INDOEX) White Paper, C-4 Publication # 143, Scripps Inst. Ocean., UCSD.
Satheesh, S. K., Krishan Moorthy, K., and Krishan Murthy, B. V.: 1998, 'Spatial Gradients in the Aerosol Characteristics over the Arabian Sea and Indian Ocean', J. Geophys. Res. 103, 26,183–26,192.
Stehr, J. W., Ball, W. P., Dickerson, R. R., Doddridge, B. G., Piety, C. A., and Johnson, J. E.: 2002, 'Latitudinal Gradients in O3 and CO during INDOEX 1999', J. Geophys. Res. 107(D19), 8015.
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Simpson, M.D., Raman, S. Role of the Land Plume in the Transport of Ozone Over the Ocean During Indoex (1999). Boundary-Layer Meteorology 111, 133–152 (2004). https://doi.org/10.1023/B:BOUN.0000010993.46250.b2
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DOI: https://doi.org/10.1023/B:BOUN.0000010993.46250.b2