DOI: 10.1029/jc087ic02p01279. Measurements of atmospheric turbidity and vertical mass loading of particulate matter in marine environments (Red Sea, Indian Ocean, and Somalian coast)

Measurements of atmospheric turbidity and vertical mass loading of particulate matter in marine environments (Red Sea, Indian Ocean, and Somalian coast)

10.1029/jc087ic02p01279

Crossref journal-article

American Geophysical Union (AGU)

Journal of Geophysical Research: Oceans (13)

Abstract

Measurements of direct solar radiation at two window wavelengths were performed with a portable Volz sun‐photometer (type III) during the scientific cruise from the Mediterranean to the Indian Ocean on the vessel Salernum (January and February 1979). From these data, evaluations of Ångström's parameters were obtained, describing the atmospheric turbidity conditions associated with the aerosol particle populations in the maritime areas of the Red Sea, Indian Ocean, and Somalian coast. The spectral exponent α was found to range mostly between 0.2 and 0.7 in coastal areas and between 0.3 and 0.9 in the ocean. The parameter β mostly varies from 0.10 to 0.35 in coastal areas and from 0.05 to 0.25 in the oceanic ones. Estimates of the vertical mass loading M of particulate matter were obtained by examining the particulate optical thicknesses in terms of extinction models based on realistic bimodal size distributions of particles. Relatively low values of M were found in the area of Bitter Lakes and Suez Gulf. The quantity M was found to increase gradually in the Red Sea, as the vessel was moving southward, and to reach rather high values around 80 μg cm−2 in the leg along the Somalian coast. In the ocean, M was found to range around 25 μg cm−2 for the most part owing to the sea salt component.

Bibliography

Tomasi, C., & Prodi, F. (1982). Measurements of atmospheric turbidity and vertical mass loading of particulate matter in marine environments (Red Sea, Indian Ocean, and Somalian coast). Journal of Geophysical Research: Oceans, 87(C2), 1279â1286. Portico.

Authors 2

Claudio Tomasi (first)
Franco Prodi (additional)

References 17 Referenced 23

{'key': 'e_1_2_1_2_1', 'first-page': '130', 'article-title': 'On the atmospheric transmission of sun radiation and on dust in the air', 'volume': '12', 'author': 'Ångström A.', 'year': '1929', 'journal-title': 'Geogr. Ann.'} / Geogr. Ann. / On the atmospheric transmission of sun radiation and on dust in the air by Ångström A. (1929)
10.1111/j.2153-3490.1964.tb00144.x
10.1038/246129a0
10.1364/AO.6.000709
10.1063/1.1700281
10.1016/S0065-2687(08)60142-9
10.1175/1520-0450(1977)016<0432:AROTRO>2.0.CO;2
10.1364/JOSA.47.000176
10.1029/JC081i033p05791
10.1175/1520-0450(1973)012<0374:IOAEUD>2.0.CO;2
Shettle E. P. andR. W.Fenn Models for the aerosols of the lower atmosphere and the effects of humidity variations on their optical properties AFGL‐TR‐79‐0214 Environ. Res. Pap. 676 Opt. Phys. Div. Hanscom Air Force Base Mass. Sept.20 1979.
10.1002/qj.49710544619
10.1051/anphys/195312080709
10.1175/1520-0469(1974)031<0261:DDITNA>2.0.CO;2
10.1029/JC077i006p01017
10.1364/AO.11.000755
10.1364/AO.12.000564

Dates

Type	When
Created	17 years, 6 months ago (Feb. 6, 2008, 12:10 p.m.)
Deposited	1 year, 11 months ago (Sept. 23, 2023, 7:17 a.m.)
Indexed	1 year, 11 months ago (Sept. 24, 2023, 12:03 a.m.)
Issued	43 years, 6 months ago (Feb. 20, 1982)
Published	43 years, 6 months ago (Feb. 20, 1982)
Published Online	12 years, 11 months ago (Sept. 20, 2012)
Published Print	43 years, 6 months ago (Feb. 20, 1982)

Funders 0

None

BibTeX

@article{Tomasi_1982, title={Measurements of atmospheric turbidity and vertical mass loading of particulate matter in marine environments (Red Sea, Indian Ocean, and Somalian coast)}, volume={87}, ISSN={0148-0227}, url={http://dx.doi.org/10.1029/jc087ic02p01279}, DOI={10.1029/jc087ic02p01279}, number={C2}, journal={Journal of Geophysical Research: Oceans}, publisher={American Geophysical Union (AGU)}, author={Tomasi, Claudio and Prodi, Franco}, year={1982}, month=feb, pages={1279–1286} }

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