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Field Measurements of Aerosol Production from Whitecaps in the Open Ocean : Volume 9, Issue 5 (18/10/2012)

By Norris, S. J.

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Book Id: WPLBN0003980436
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Field Measurements of Aerosol Production from Whitecaps in the Open Ocean : Volume 9, Issue 5 (18/10/2012)  
Author: Norris, S. J.
Volume: Vol. 9, Issue 5
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Moat, B. I., Brooks, I. M., Pascal, R. W., Yelland, M. J., Norris, S. J., Leeuw, G. D., & Brooks, B. (2012). Field Measurements of Aerosol Production from Whitecaps in the Open Ocean : Volume 9, Issue 5 (18/10/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: School of Earth and Environment, University of Leeds, UK. Simultaneous measurements of near-surface aerosol and bubble spectra were made during five buoy deployments in the open ocean of the North Atlantic and used to estimate aerosol fluxes per unit area of whitecap. The measurements were made during two cruises as part of the SEASAW project, a UK contribution to the international SOLAS program. The mean bubble number concentrations for each deployment are in broad agreement with other open ocean spectra and are consistently one to two orders of magnitude lower than previous laboratory and surf zone studies. This suggests that the aerosol fluxes estimated above open ocean whitecaps will differ to those from over the surf zone and laboratory whitecaps due to the differences in the size and number of bursting bubbles. Production fluxes per unit area of whitecap are estimated from the mean aerosol concentration for each buoy deployment. They are found to increase with wind speed, and span the range of values found by previous laboratory and surf-zone studies for particles with radius at 80% humidity, R80 < 1 μm, but to drop off more rapidly with increasing size for larger particles. A possible cause of this difference in behavior is the significant difference in bubble spectra. Estimates of the mean sea spray flux were made by scaling the whitecap production fluxes with in-situ estimates of whitecap fraction. The sea spray fluxes are also compared with simultaneous individual eddy covariance flux estimates made during the cruise, and with a sea spray source function derived from them.

Summary
Field measurements of aerosol production from whitecaps in the open ocean

Excerpt
Andreas, E. L.: A review of the sea spray generation function for the open ocean, in: Atmosphere-Ocean Interactions, Vol. 1, edited by: Perrie, W., 1–46, WIT Press, Southampton, UK, 2002.; Andreas, E. L, Jones, K. F., and Fairall, C. W.: Production velocity of sea spray droplets, J. Geophys. Res., 115, C12065, doi:10.1029/2010JC006458, 2010.; Blanchard, D. C.: The electrification of the atmosphere by particles from bubbles in the sea, Program of Oceanography, 1, 171–202, 1963.; Anguelova, M. D. and Webster, F.: Whitecap coverage from satellite measurements: A first step toward modelling the variability of oceanic whitecaps, J. Geophys. Res., 111, C03017, doi:10.1029/2005JC003158, 2006.; Blanchard, D. C.: The oceanic production rate of cloud nuclei, J. Recherches Atmos., 4, 1–6, 1969.; Blanchard, D. C.: The Production, Distribution, and Bacterial Enrichment of the Sea-Salt Aerosol, in: Air-Sea Exchange of Gases and Particles, edited by: Slinn, W. G. N. and Liss, P. S., Kluwer Academic Publishers, 1983.; Blanchard, D. C.: Surface-active monolayers, bubbles and jet drops, Tellus, 42B, 200–205, 1990.; Blanchard, D. C. and Woodcock, A.: Bubble formation and modification in the sea and its meteorological significance, Tellus, 9, 145–158, 1957.; Bortkovskii, R. S.: Air-sea exchange of heat and moisture during storms, Springer, New York, 193 pp., 1987.; Day, J. A.: Production of droplets and salt nuclei by the bursting of air bubble films, Quart. J. Roy. Meteor. Soc., 90, 72–78, 1964.; Brooks, I. M., Yelland, M. J., Upstill-Goddard, R. C., Nightingale, P. D., Archer, S., d'Asaro, E., Beale, R., Beatty, C., Blomquist, B., Bloom, A. A., Brooks, B. J., Cluderay, J., Coles, D., Dacey, J., DeGrandpre, M., Dixon, J., Drennan, W. M., Gabriele, J., Goldson, L., Hardman-Mountford, N., Hill, M. K., Horn, M., Hsueh, P. - C., Huebert, B., de Leeuw, G., Leighton, T. G., Liddicoat, M., Lingard, J. J. N., McNeil, C., McQuaid, J. B., Moat, B. I., Moore, G., Neill, C., Norris, S. J., O'Doherty, S., Pascal, R. W., Prytherch, J., Rebozo, M., Sahlee, E., Salter, M., Schuster, U., Skjelvan, I., Slagter, H., Smith, M. H., Smith, P. D., Srokosz, M., Stephens, J. A., Taylor, P. K., Telszewski, M., Walsh, R., Ward, B., Woolf, D. K., Young, D., and Zemmelink, H.: Physical Exchanges at the Air-Sea, Interface: Field Measurements from UK-SOLAS, Bull. Amer. Meteorol. Soc., 90, 629–644, doi:10.1175/2008BAMS2578.1, 2009a.; Brooks, I. M., Yelland, M. J., Upstill-Goddard, R. C., Nightingale, P. D., Archer, S., d'Asaro, E., Beale, R., Beatty, C., Blomquist, B., Bloom, A. A., Brooks, B. J., Cluderay, J., Coles, D., Dacey, J., DeGrandpre, M., Dixon, J., Drennan, W. M., Gabriele, J., Goldson, L., Hardman-Mountford, N., Hill, M. K., Horn, M., Hsueh, P.-C., Huebert, B., de Leeuw, G., Leighton, T. G., Liddicoat, M., Lingard, J. J. N., McNeil, C., McQuaid, J. B., Moat, B. I., Moore, G., Neill, C., Norris, S. J., O'Doherty, S., Pascal, R. W., Prytherch, J., Rebozo, M., Sahlee, E., Salter, M., Schuster, U., Skjelvan, I., Slagter, H., Smith, M. H., Smith, P. D., Srokosz, M., Stephens, J. A., Taylor, P. K., Telszewski, M., Walsh, R., Ward, B., Woolf, D. K., Young, D., and Zemmelink, H.: UK-SOLAS Fie

 

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