 |
| Titel |
Near-surface measurements of sea spray aerosol production over whitecaps in the open ocean |
| VerfasserIn |
S. J. Norris, I. M. Brooks, B. I. Moat, M. J. Yelland, G. Leeuw, R. W. Pascal, B. Brooks |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1812-0784
|
| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 9, no. 1 ; Nr. 9, no. 1 (2013-02-19), S.133-145 |
| Datensatznummer |
250017456
|
| Publikation (Nr.) |
 copernicus.org/os-9-133-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| Simultaneous measurements of near-surface aerosol (0.12 < R < 9.25 μm) and bubble spectra (13 < R < 620 μm) 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 Sea Spray, Gas Flux, and Whitecaps (SEASAW) project, a
UK contribution to the international Surface Ocean
Lower Atmosphere Study (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
surf zone studies. 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%
relative humidity, R80 < 1 μm, but to drop off more rapidly
with increasing particle size for larger particles. 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, and
with a sea spray source function derived from them. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|