Meng Yang, Changjian Ni, Zisheng Meng, Xinyi Li. Nonstationary Analysis of Aerosol Extinction Coefficient in Chengdu During Autumn and Winter[J]. Laser & Optoelectronics Progress, 2021, 58(19): 1901002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 19, 1901002 (2021)
Fig. 1. Time series of the aerosol extinction coefficient. (a) 2015; (b) 2016; (c) 2017
Fig. 2. Centile curves plots based on M0 and M1b_5 models. (a) M0; (b) M1b_5
Fig. 3. AIC value of aerosol extinction coefficient sequence model
Fig. 4. Centile curves plots based M2b model
Fig. 5. QQ plots based on M2b model. (a) 2015; (b) 2016; (c) 2017
Fig. 6. Contribution of each variable in the critical period and the aerosol extinction coefficient
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Table 1. External covariates
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Table 2. Parameters of the candidate models
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Table 3. Statistical parameters of aerosol extinction coefficient time series
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Table 4. AIC values of M0 and M1 models
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Table 5. Aerosol extinction coefficient sequence based on M2 model
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Table 6. Residual analysis results based on the M2b model
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Table 7. Average contribution of each variable to the nonstationarity of aerosol extinction coefficient series
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Table 8. Key period of explosive growth of aerosol extinction coefficient
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