WIT Press

Visibility Trends In The Los Angeles Basin, 1933-present

Price

Free (open access)

Paper DOI

10.2495/AIR990991

Volume

37

Pages

10

Published

1999

Size

1,428 kb

Author(s)

S. LaDochy & D. Fuentes

Abstract

This study looks at (1) the historical and recent trends in Los Angeles Basin visibility; (2) the temporal and spatial variability of visibility and air pollution levels; and (3) the relationships between visibility, paniculate levels and meteorological variables. Visibility has improved in the downtown L.A. area over the last two decades, after a decline from the 1930's through the early 1970's. However, in the inland valleys, both visibility and pollution levels fail to show similar improvements. A marked shift in the center of maximum frequency of low visibility occured. In the early 1950's, lowest visibility centered over downtown Los Angeles, while in the 7CTs, it resided over western San Bernardino County. Paniculate levels show a similar shif

Keywords