8/24/2023 0 Comments London fog 1952These models were also employed to estimate mean excess daily deaths attributed hypothetically to air pollution. The pollution-predicted deaths fit the observed deaths well, which supports the applicability of such deviation-derived coefficients to the absolute scale. The coefficients obtained were applied to the 1962 pollution episode to examine the continuity of the estimated slopes. Alternative regression models with pollution and weather variables were also developed. Significant associations between same-day and more » lagged pollution variables and mortality were found. Temporal lag structures between the variables were examined after removal of long-term components from each series in order to obtain rational cross-correlations. Consideration of the acid aerosol data was of special interest because this chemical component has been suspected as a causal agent in past episodes. In this study, we examined daily British Smoke, sulfur dioxide, acid aerosols, and weather variables for their short-term associations with daily mortality in the more typical (nonepisodic) winters of 1965-1972. « lessĭuring the extreme pollution episodes of 19 in London, England, excesses in daily mortality were clearly evident. In this study, relationships among visual range derived extinction coefficient (Bext) and other pollutants are investigated during a preliminary one year study period from Apthrough Main order to better assess past fine particle and acid aerosol exposures in London and to aid in the possible development of a predictive formulae for each which might be applied for periods when direct data are lacking. As such, the specific particulate constituents that were responsible for reported heath effects could not be identified in past research, but it has been suggested that causal factor was acidic aerosols. Although past studies have shown associations between British Smoke and mortality, British Smoke (BS) is a crude index of particulate pollution, and does not give direct information on mass concentration or composition. The coincident health effects and pollutant data set for 1958-1971 is valuable for exposure-response studies because it covers both the time periods when relatively severe episodes occurred and when levels of pollutants substantially declined as more » control measures were applied. Also, daily measurements of air pollution indices such as British Smoke and SO/sub 2/ were begun in January 1954. Commencing in 1958, the General Register Office started compiling mortality statistics for Greater London during the winter and, from 1965 on, for every day. ![]() ![]() =, number = ,Ī relationship between air pollution and mortality/morbidity was recognized in England, especially after the severe London fog episode of December 5-8, 1952.
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