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Seasonal Variation of the Aerosol Light Scattering Coefficient in Marine Air of the Northeast Atlantic
Joint Authors
Jennings, S. Gerard
O'Dowd, Colin D.
Vaishya, Aditya
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-19
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Aerosol light scattering measurements were carried out using a TSI 3563 Nephelometer at the Mace Head Atmospheric Research Station, on the west coast of Ireland from year 2001–2010.
A strong seasonal trend in the aerosol light scattering coefficient at 550 nm (σscat), for clean marine air masses, is observed with a high σscat value, [average (geometric mean)] of 35.3 Mm−1 (29.5 Mm−1), in January and a low σscat value of 13.7 Mm−1 (10.2 Mm−1), in July.
This near threefold increase in the σscat value during the winter season is because of the large contribution of wind-speed generated sea-salt particles in the marine boundary layer.
A high positive correlation coefficient of 0.82 was found between the percentage occurrence of relatively large Ångström exponent (Å) values (>1.2) and the percentage occurrence of lower σscat values (5–15 Mm−1) in the summer season.
σscat and wind-speed have a high positive correlation coefficient of 0.88 whereas Å and wind-speed have a negative correlation coefficient of −0.89.
Å values during the summer months indicate the dominance of sub-μm particles thus indicating the contribution of non-sea-salt sulphate and organics towards the σscat as these species show an enhanced concentration during the summer months.
American Psychological Association (APA)
Vaishya, Aditya& Jennings, S. Gerard& O'Dowd, Colin D.. 2011. Seasonal Variation of the Aerosol Light Scattering Coefficient in Marine Air of the Northeast Atlantic. Advances in Meteorology،Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-451491
Modern Language Association (MLA)
Vaishya, Aditya…[et al.]. Seasonal Variation of the Aerosol Light Scattering Coefficient in Marine Air of the Northeast Atlantic. Advances in Meteorology No. 2011 (2011), pp.1-6.
https://search.emarefa.net/detail/BIM-451491
American Medical Association (AMA)
Vaishya, Aditya& Jennings, S. Gerard& O'Dowd, Colin D.. Seasonal Variation of the Aerosol Light Scattering Coefficient in Marine Air of the Northeast Atlantic. Advances in Meteorology. 2011. Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-451491
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-451491