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首页> 外文期刊>Journal of Quality Measurement and Analysis: JQMA >SCALING AND PERSISTENCE OF OZONE CONCENTRATIONS IN KLANG VALLEY, MALAYSIA
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SCALING AND PERSISTENCE OF OZONE CONCENTRATIONS IN KLANG VALLEY, MALAYSIA

机译：马来西亚Klang Valley臭氧浓度的扩展与持久性

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摘要

The aim of this paper is to describe the characteristics of ozone concentration based on the value of Hurst coefficient. The Hurst coefficient, denoted as H, is used to explain the long-term degree of persistency in ozone concentration in Malaysia. This paper investigates the scaling properties and persistency of ozone concentrations at six selected air quality monitoring stations in Klang Valley, Malaysia. Daily mean for the hourly data of ozone concentration from 1998-2006 is considered in this study. In describing the statistical properties, several related statistics are identified and the autocorrelation functions of the observed data were plotted. The anomaly method is used to deseasonalise the seasonal variation and the natural non-stationary of the data. Next, the persistency of ozone concentration is determined by using the scaling analysis, namely Dispersional Ratio Method. This method considers two dispersion measures, that is the range and variance. The result shows that there are two different scaling regions, separated by a critical time scale, n_c which is approximately 90 days. For shorter time scale (n < n_c), the ozone concentration persists and the concentration is high on higher time scale (n > n_c) where the H values are between 0.5 < H < 1 at all monitoring stations. These findings provide information on scaling behaviour and persistence in ozone concentration in the ambient air of Klang Valley, Malaysia.
机译：本文的目的是描述基于赫斯特系数的价值的臭氧浓度的特征。表示为H的狭步系数用于解释马来西亚臭氧浓度的长期持续性。本文研究了马来西亚克隆谷六个选定的空气质量监测站臭氧浓度的缩放性质和持久性。在本研究中考虑了1998 - 2006年从1998 - 2006年的臭氧浓度的每小时数据。在描述统计特性时，识别了几个相关统计信息，并且绘制了观察数据的自相关函数。异常方法用于终止季节性变化和数据的自然非静止。接下来，通过使用缩放分析来确定臭氧浓度的持久性，即分散比方法。该方法考虑了两个色散度量，即范围和方差。结果表明，有两个不同的缩放区域，由临界时间刻度分开，N_C大约90天。对于较短的时间尺度（n n_c）上高，其中H值在所有监测站的0.5

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