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| Titel |
Aerosols over continental Portugal (1978–1993): their sources and an impact on the regional climate |
| VerfasserIn |
A. L. Morozova, I. A. Mironova |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 11 ; Nr. 15, no. 11 (2015-06-12), S.6407-6418 |
| Datensatznummer |
250119806
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| Publikation (Nr.) |
 copernicus.org/acp-15-6407-2015.pdf |
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| Zusammenfassung |
| Understanding of aerosol sources that affect climate is an ongoing problem
facing scientists as well as policymakers. The role of aerosols in
local climate variability depends on a balance between light absorbing and
scattering particles as well as on variability of environmental conditions.
In this paper we investigate variability of aerosol content (both absorbing
and scattering ultraviolet radiation) over continental Portugal in connection
with aerosol sources (volcanic eruptions, dust events, wildfires and
anthropogenic pollution). The effect of the aerosol on the climate is studied
analyzing their contribution to variations of temperature, pressure, sunshine
duration and precipitation over Portuguese regions. The present analysis is
based on a developed modern multiple regression technique allowing us to
build the statistical correlation models to determine both the main local
aerosol sources and aerosol's influence on the climate of continental
Portugal during 1978–1993. The analysis allows us to conclude
that the main sources driving the variations of the aerosol content over
studied locations are wildfires, mineral dust intrusions and anthropogenic
pollution. The relations between the aerosol content variations and the
atmospheric parameters depend on the level of urbanization of the studied
region, the type of aerosol and the season. The most significant finding is
the decrease of the daily maximum temperature (and diurnal temperature range)
related to the decrease of sunshine duration observed during the summer
periods of increased content of the absorbing aerosols in the atmosphere. |
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