Summary
The reduction of solar radiation at Toronto was investigated on both cloudless days and all days. Next this reduction is related to SO2 concentration multiplied by cosa (a is the solar altitude) because solar radiation is influenced by both the concentration of air pollution and the path length of the solar beam through the urban atmosphere. Finally the relationship between the reduction of solar radiation and the wind direction is obtained, indicating the effect of the shift of the urban pollution dome on solar radiation.
Zusammenfassung
Die Schwächung der Sonnenstrahlung in Toronto wurde sowohl für wolkenlose Tage wie auch für alle Tage untersucht. Die Schwächung wird zur SO2-Konzentration in Beziehung gesetzt, die mit cosa multipliziert wird, woa die Sonnenhöhe bedeutet, da die Sonnenstrahlung sowohl durch die Konzentration der Luftverunreinigung wie auch durch die Länge des Weges des Sonnenstrahles durch die Stadtatmosphäre beeinflußt wird. Schließlich wird die Beziehung zwischen der Schwächung der Sonnenstrahlung und der Windrichtung abgeleitet, die die Wirkung der Verlagerung der Luftverunreinigungsmasse der Stadt auf die Sonnenstrahlung erkennen läßt.
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Yamashita, S. Air pollution study from measurements of solar radiation. Arch. Met. Geoph. Biokl. B. 21, 243–253 (1973). https://doi.org/10.1007/BF02243731
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DOI: https://doi.org/10.1007/BF02243731