PREDICTION OF PM<sub>2.5</sub> AND OZONE CONCENTRATION BASED ON VMD-CEEMD DECOMPOSITION AND LSTM

ZHOU Jianguo; WANG Jianyu; WEI Siti

doi:10.13205/j.hjgc.202306021

Volume 41 Issue 6

Jun. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(6): 157-165,221

ZHOU Jianguo, WANG Jianyu, WEI Siti. PREDICTION OF PM2.5 AND OZONE CONCENTRATION BASED ON VMD-CEEMD DECOMPOSITION AND LSTM[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(6): 157-165,221. doi: 10.13205/j.hjgc.202306021

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ZHOU Jianguo, WANG Jianyu, WEI Siti. PREDICTION OF PM_2.5 AND OZONE CONCENTRATION BASED ON VMD-CEEMD DECOMPOSITION AND LSTM[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(6): 157-165,221. doi: 10.13205/j.hjgc.202306021

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PREDICTION OF PM_2.5 AND OZONE CONCENTRATION BASED ON VMD-CEEMD DECOMPOSITION AND LSTM

doi: 10.13205/j.hjgc.202306021

School of Business Administration, North China Electric Power University, Baoding 071000, China

Received Date: 2022-09-13
Available Online: 2023-09-02

Abstract

Abstract

Accurate prediction of ozone and PM_2.5 concentration can provide a scientific basis for the prevention and control of photochemical pollution. However, the prediction accuracy of the existing ozone and PM_2.5 concentration prediction models is still not sufficient. Based on the daily average ozone and PM_2.5 concentration data in Nanjing from January 1, 2015, to June 30, 2021, a pollutant concentration prediction model for complementary ensemble empirical mode decomposition (CEEMD) secondary decomposition and long and short-term memory neural network (LSTM) was constructed. Firstly, the ozone and PM_2.5 concentration sequence was decomposed by variational mode decomposition (VMD). Secondly, the CEEMD secondary decomposition was used with residual components, and then all the decomposed subsequences were predicted by LSTM. Finally, the output result was reconstructed to get the final result. The results showed that for the forcast of PM_2.5 and O₃ concentration in Nanjing, comparing with the other models, the model VMD-CEEMD-LSTM proposed in this paper was superior and robust, with the RMSE of ozone and PM_2.5 concentrations of 16.47 and 5.12, respectively. This study could provide valuable references for analyzing ozone and PM_2.5 pollution trend.
- ozone,
- PM_2.5,
- concentration prediction,
- secondary decomposition,
- long- and short-term memory neural networks,
- CEEMD

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