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Correlations between fine particulate matter (PM2.5) and meteorological variables in the United States: Implications for the sensitivity of PM2.5 to climate change

Open access
Tai, Amos P.K., Mickley, Loretta J., Jacob, Daniel J.·2010·Atmospheric Environment

Abstract

Abstract We applied a multiple linear regression (MLR) model to study the correlations of total PM2.5 and its components with meteorological variables using an 11-year (1998–2008) observational record over the contiguous US. The data were deseasonalized and detrended to focus on synoptic-scale correlations. We find that daily variation in meteorology as described by the MLR can explain up to 50% of PM2.5 variability with temperature, relative humidity (RH), precipitation, and circulation all being important predictors. Temperature is positively correlated with sulfate, organic carbon (OC) and elemental carbon (EC) almost everywhere. The correlation of nitrate with temperature is negative in the Southeast but positive in California and the Great Plains. RH is positively correlated with sulfate and nitrate, but negatively with OC and EC. Precipitation is strongly negatively correlated with all PM2.5 components. We find that PM2.5 concentrations are on average 2.6 μg m−3 higher on stagnant vs. non-stagnant days. Our observed correlations provide a test for chemical transport models used to simulate the sensitivity of PM2.5 to climate change. They point to the importance of adequately representing the temperature dependence of agricultural, biogenic and wildfire emissions in these models.

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Metadata

Authors
Tai, A. P. K., Mickley, L. J., & Jacob, D. J.
Venue
Atmospheric Environment
Publisher
Elsevier BV
Published
2010-10
Volume
44
Issue
32
Pages
3976-3984
ISSN
1352-2310 (ISSN-L)
OpenAlex
W2034446988
Cited by
1,048
References
38
FWCI
11.24
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Correlations between fine particulate matter (PM2.5) and meteorological variables in the United States: Implications for the sensitivity of PM2.5 to climate change. https://app.cochat.ai/papers/10.1016/j.atmosenv.2010.06.060
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Tai, A. P. K., Mickley, L. J., & Jacob, D. J. (2010). Correlations between fine particulate matter (PM2.5) and meteorological variables in the United States: Implications for the sensitivity of PM2.5 to climate change. Atmospheric Environment. https://doi.org/10.1016/j.atmosenv.2010.06.060

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.