Investigation of the Implications of “Haze Special Law” on Air Quality in South Korea
Joint Authors
Kim, Junseok
Wang, Jian
Shao, Wei
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-03-13
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
In this work, the air pollution index in three cities (Seoul, Busan, and Daegu) in South Korea was studied using multifractal detrended fluctuation analysis (MF-DFA).
Hurst, Renyi, and Holder exponents were used to analyze the characteristics of the concentration time series of PM2.5 and NO2.
The results showed that multifractality exists in each season interval and the multifractal degree of PM2.5 is stronger than that of NO2.
To investigate the effects of the implementation of the “haze special law” on February 15, 2019, we analyzed the time series of PM2.5 during the time periods from February 15, 2018, to December 16, 2018, and February 15, 2019, to December 16, 2019.
We found that the multifractal spectrum width after the implementation of the law was narrower than that before the law for all the cities, which shows that the enactment of the law has played a role in improving the efficiency of air pollution control in South Korea.
We also conclude that the major effects of the law will be particularly visible in larger cities.
To study the main causes of multifractality, the shuffled and phase-randomized series were analyzed using MF-DFA, and the results demonstrated that the fat-tailed distribution resulted in the multifractality of the time series before and after the implementation of the “haze special law” in Seoul and Daegu, whereas long-range correlation resulted in multifractality of the series before and after the implementation of the law in Busan.
American Psychological Association (APA)
Wang, Jian& Kim, Junseok& Shao, Wei. 2020. Investigation of the Implications of “Haze Special Law” on Air Quality in South Korea. Complexity،Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1142802
Modern Language Association (MLA)
Wang, Jian…[et al.]. Investigation of the Implications of “Haze Special Law” on Air Quality in South Korea. Complexity No. 2020 (2020), pp.1-18.
https://search.emarefa.net/detail/BIM-1142802
American Medical Association (AMA)
Wang, Jian& Kim, Junseok& Shao, Wei. Investigation of the Implications of “Haze Special Law” on Air Quality in South Korea. Complexity. 2020. Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1142802
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1142802