Articles | Volume 22, issue 18
https://doi.org/10.5194/acp-22-11945-2022
https://doi.org/10.5194/acp-22-11945-2022
Research article
 | 
16 Sep 2022
Research article |  | 16 Sep 2022

Contributions of meteorology and anthropogenic emissions to the trends in winter PM2.5 in eastern China 2013–2018

Yanxing Wu, Run Liu, Yanzi Li, Junjie Dong, Zhijiong Huang, Junyu Zheng, and Shaw Chen Liu

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Multiple linear regression (MLR) analyses often interpret the correlation coefficient (r2) as the contribution of an independent variable to the dependent variable. Since a good correlation does not imply a causal relationship, we propose that r2 should be interpreted as the maximum possible contribution. Moreover, MLR results are sensitive to the length of time analyzed; long-term analysis gives a more accurate assessment because of its additional constraints.
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