A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Visibility trends—II. Mideastern United States 1948—1978
Abstract Trends in visibility in the mideastern United Slates are identified. Yearly and seasonal patterns are extracted from National Weather Service data using cumulative percentile and ridit analyses. The 1948–1978 time period is considered. No persistent pattern in the overall yearly visibility trends applies to the entire region. However, a deterioration of visibility in the 1960s during the summer quarter occurred regionally; it is most pronounced at median sized urban locations which experienced high growth. Those locations also experienced spring quarter declines in visibility. Further deterioration has not occurred in the 1970s. Metropolitan centers and more rural sites have shown improvement in fall and winter visibilities in the 1970s. Similarities between trends in visibility and trends in ambient sulfate concentrations and SO2 emissions are discussed. Possible meteorological influences are noted.
Visibility trends—II. Mideastern United States 1948—1978
Abstract Trends in visibility in the mideastern United Slates are identified. Yearly and seasonal patterns are extracted from National Weather Service data using cumulative percentile and ridit analyses. The 1948–1978 time period is considered. No persistent pattern in the overall yearly visibility trends applies to the entire region. However, a deterioration of visibility in the 1960s during the summer quarter occurred regionally; it is most pronounced at median sized urban locations which experienced high growth. Those locations also experienced spring quarter declines in visibility. Further deterioration has not occurred in the 1970s. Metropolitan centers and more rural sites have shown improvement in fall and winter visibilities in the 1970s. Similarities between trends in visibility and trends in ambient sulfate concentrations and SO2 emissions are discussed. Possible meteorological influences are noted.
Visibility trends—II. Mideastern United States 1948—1978
Sloane, Christine S. (author)
Atmospheric Environment ; 16 ; 2309-2321
1981-09-28
13 pages
Article (Journal)
Electronic Resource
English
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