A qualidade do ar em Lisboa. Valores médios e situações extremas

Authors

  • Henrique Andrade

DOI:

https://doi.org/10.18055/Finis1809

Abstract

AIR QUALITY IN LISBON: MEAN AND EXTREME VALUES - Different aspects of the air pollution in Lisbon were analised: spatial distribution, cyclical variation (yearly, weekly and daily) and dependence on athmospheric conditions. During January 1993, when air pollution attained very high levels, we found that a very strong relationship was established between air pollution and wind speed and direction as well as between air pollution and the eight of the thermal inversion over Lisbon. During the more polluted periods, wind speed never reached 2 m/s and the thermal inversion was always under 165m. As for wind direction, pollution roses confirmed that the highest pollution levels occurred with a flux favourable to the transport of pollutants from the main emission areas.

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How to Cite

Andrade, H. (1996). A qualidade do ar em Lisboa. Valores médios e situações extremas. Finisterra, 31(61). https://doi.org/10.18055/Finis1809

Issue

Vol. 31 No. 61 (1996)

Section

Articles

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