Rao S T, Sistla G, Henry R
Division of Air Resources, New York State Department of Environmental Conservation, Albany.
J Air Waste Manage Assoc. 1992 Sep;42(9):1204-11. doi: 10.1080/10473289.1992.10467069.
The purpose of this paper is to demonstrate the use of some statistical methods for examining trends in ambient ozone air quality downwind of major urban areas. To this end, daily maximum 1-hr ozone concentrations measured over New Jersey, metropolitan New York City and Connecticut for the period 1980 to 1989 were assembled and analyzed. This paper discusses the application of the bootstrap method, extreme value statistics and a nonparametric test for evaluating trends in urban ozone air quality. The results indicate that although there is an improvement in ozone air quality downwind of New York City, there has been little change in ozone levels upwind of New York City during this ten-year period.
本文的目的是展示一些统计方法在研究主要城市下风方向环境臭氧空气质量趋势中的应用。为此，收集并分析了1980年至1989年期间在新泽西州、纽约市大都市区和康涅狄格州测得的每日1小时最大臭氧浓度。本文讨论了自助法、极值统计和一种非参数检验在评估城市臭氧空气质量趋势中的应用。结果表明，尽管纽约市下风方向的臭氧空气质量有所改善，但在这十年期间，纽约市上风方向的臭氧水平几乎没有变化。
