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Scavenging of sea-salt aerosols by rain events over Arabian Sea during ARMEX

Chate, D.M. / Ali, K. / Momin, G.A. / Rao, P.S.P. / Praveen, P.S. / Safai, P.D. / Devara, P.C.S.

AbstractScavenging coefficients are obtained for sea-salt particles at rainfall intensity of 5, 10, 15, 20 and 45mmh⁻¹. Evolutions of size distributions for sea-salt particles by precipitation scavenging are simulated using theoretically estimated scavenging coefficients. Results indicate that below-cloud scavenging affects mainly sea-salt particles in coarse mode. Observed concentrations of Na⁺ and Cl⁻ in rainwater increased with rainfall intensity and aerosol size. Comparison of predicted concentrations of Na⁺ and Cl⁻ in rainwater with observed ionic concentrations of short-timed wet-only samples collected during rain events on 2 August 2002 over Arabian Sea (ARMEX-2002) supports the model result.

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Scavenging of sea-salt aerosols by rain events over Arabian Sea during ARMEX

Chate, D.M. / Ali, K. / Momin, G.A. / Rao, P.S.P. / Praveen, P.S. / Safai, P.D. / Devara, P.C.S.

AbstractScavenging coefficients are obtained for sea-salt particles at rainfall intensity of 5, 10, 15, 20 and 45mmh⁻¹. Evolutions of size distributions for sea-salt particles by precipitation scavenging are simulated using theoretically estimated scavenging coefficients. Results indicate that below-cloud scavenging affects mainly sea-salt particles in coarse mode. Observed concentrations of Na⁺ and Cl⁻ in rainwater increased with rainfall intensity and aerosol size. Comparison of predicted concentrations of Na⁺ and Cl⁻ in rainwater with observed ionic concentrations of short-timed wet-only samples collected during rain events on 2 August 2002 over Arabian Sea (ARMEX-2002) supports the model result.

Scavenging of sea-salt aerosols by rain events over Arabian Sea during ARMEX

Chate, D.M. / Ali, K. / Momin, G.A. / Rao, P.S.P. / Praveen, P.S. / Safai, P.D. / Devara, P.C.S.

AbstractScavenging coefficients are obtained for sea-salt particles at rainfall intensity of 5, 10, 15, 20 and 45mmh⁻¹. Evolutions of size distributions for sea-salt particles by precipitation scavenging are simulated using theoretically estimated scavenging coefficients. Results indicate that below-cloud scavenging affects mainly sea-salt particles in coarse mode. Observed concentrations of Na⁺ and Cl⁻ in rainwater increased with rainfall intensity and aerosol size. Comparison of predicted concentrations of Na⁺ and Cl⁻ in rainwater with observed ionic concentrations of short-timed wet-only samples collected during rain events on 2 August 2002 over Arabian Sea (ARMEX-2002) supports the model result.

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Title:

Scavenging of sea-salt aerosols by rain events over Arabian Sea during ARMEX

Contributors:

Chate, D.M. (author) / Ali, K. (author) / Momin, G.A. (author) / Rao, P.S.P. (author) / Praveen, P.S. (author) / Safai, P.D. (author) / Devara, P.C.S. (author)

Published in:

Atmospheric Environment ; 41 ; 6739-6744

Publication date:

2007-04-25

Size:

6 pages

ISSN:

DOI:

https://doi.org/10.1016/j.atmosenv.2007.04.051

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Ionic concentration , Wet removal , Below-cloud scavenging , Natural washout , Coagulation

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