Partitioning of NH3-NH4+ in the Southeastern U.S.
Abstract
:1. Introduction
2. Materials and Methods
2.1. Data Acquisition and Processing
2.2. Investigation of the Partitioning of NH3-NH4+
2.3. ISORROPIA II Model
2.4. Multiple Linear Regression Model
3. Results and Discussion
3.1. Statistical Characterization of the Field Measurement Data
3.2. Seasonal Simulation of Partitioning of NH3-NH4+
3.3. Diurnal Simulation of the Partitioning of NH3-NH4+
3.4. Multiple Linear Regression Model
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Predictors | Coefficients | SE | t Value | Pr > |t| |
---|---|---|---|---|
Intercept (β0) | 0.08 | 0.033 | 2.39 | 0.018 |
SO42− (β1) | 0.33 | 0.009 | 37.11 | <2 × 10−16 |
NO3− (β2) | 0.25 | 0.018 | 13.64 | <2 × 10−16 |
(SO42−-3.27)2 (β3) | −0.008 | 0.001 | −5.74 | 4.5 × 10−8 |
Mg2+ (β4) | −3.83 | 1.45 | −2.65 | 0.0089 |
Predictors | Coefficients | SE | t value | Pr > |t| |
---|---|---|---|---|
Intercept (β0) | 0.028 | 0.027 | 1.03 | 0.31 |
SO42− (β1) | 0.38 | 0.013 | 29.58 | <2 × 10−16 |
NO3− (β2) | 0.067 | 0.032 | 2.12 | 0.036 |
(NO3−-0.41)2 (β3) | 0.155 | 0.028 | 5.62 | 1.23 × 10−7 |
Na+ (β4) | −0.54 | 0.132 | −4.1 | 7.48 × 10−5 |
T (β5) | −0.0025 | 0.00149 | −1.67 | 0.097 |
(Na+-0.04)2 (β6) | 0.71 | 0.29 | 2.43 | 0.0166 |
HNO3 (β7) | −0.045 | 0.027 | −1.66 | 0.0995 |
K+ (β8) | 0.87 | 0.38 | 2.31 | 0.0226 |
SO42−:T (β9) | −0.0029 | 0.000684 | −4.24 | 4.39 × 10−5 |
T:HNO3 (β10) | 0.0045 | 0.0014 | 3.25 | 0.00149 |
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Cheng, B.; Wang-Li, L.; Meskhidze, N.; Classen, J.; Bloomfield, P. Partitioning of NH3-NH4+ in the Southeastern U.S. Atmosphere 2021, 12, 1681. https://doi.org/10.3390/atmos12121681
Cheng B, Wang-Li L, Meskhidze N, Classen J, Bloomfield P. Partitioning of NH3-NH4+ in the Southeastern U.S. Atmosphere. 2021; 12(12):1681. https://doi.org/10.3390/atmos12121681
Chicago/Turabian StyleCheng, Bin, Lingjuan Wang-Li, Nicholas Meskhidze, John Classen, and Peter Bloomfield. 2021. "Partitioning of NH3-NH4+ in the Southeastern U.S." Atmosphere 12, no. 12: 1681. https://doi.org/10.3390/atmos12121681