Comparison and Validation of TROPOMI and OMI NO2 Observations over China
Abstract
:1. Introduction
2. Data
2.1. TROPOMI NO2 Data
2.2. OMI NO2 Data
2.3. MAX-DOAS Measurements
3. Results and Discussion
3.1. Comparison of TROPOMI and OMI Tropospheric NO2
3.1.1. Spatial Analysis at the National Scale
3.1.2. Analysis over the Jing-Jin-Ji Region
3.2. Validation against Ground-Based MAX-DOAS Measurements
3.2.1. Diurnal Variations
3.2.2. Monthly Variations
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Period | OMI | TROPOMI | Difference | R | Slope | Intercept | N |
---|---|---|---|---|---|---|---|
Year | 0.74 | 0.57 | 0.17 | 0.98 | 0.74 | 0.02 | 841 |
Spring | 0.63 | 0.52 | 0.11 | 0.96 | 0.77 | 0.03 | 841 |
Summer | 0.34 | 0.29 | 0.05 | 0.95 | 0.78 | 0.02 | 841 |
Autumn | 0.86 | 0.63 | 0.23 | 0.96 | 0.67 | 0.06 | 841 |
Winter | 1.15 | 0.84 | 0.31 | 0.94 | 0.65 | 0.09 | 840 |
February | 0.67 | 0.57 | 0.10 | 0.90 | 0.75 | 0.08 | 816 |
March | 0.83 | 0.62 | 0.21 | 0.91 | 0.61 | 0.11 | 834 |
April | 0.64 | 0.54 | 0.11 | 0.90 | 0.72 | 0.07 | 838 |
May | 0.43 | 0.40 | 0.03 | 0.94 | 0.86 | 0.03 | 841 |
June | 0.38 | 0.34 | 0.03 | 0.92 | 0.82 | 0.03 | 836 |
July | 0.32 | 0.26 | 0.06 | 0.85 | 0.59 | 0.07 | 816 |
August | 0.31 | 0.25 | 0.06 | 0.86 | 0.68 | 0.04 | 793 |
September | 0.46 | 0.41 | 0.05 | 0.85 | 0.70 | 0.09 | 834 |
October | 0.69 | 0.61 | 0.08 | 0.93 | 0.79 | 0.06 | 838 |
November | 1.45 | 0.89 | 0.56 | 0.93 | 0.51 | 0.15 | 826 |
December | 1.33 | 0.95 | 0.38 | 0.89 | 0.58 | 0.18 | 835 |
January | 1.38 | 1.00 | 0.38 | 0.87 | 0.56 | 0.22 | 831 |
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Wang, C.; Wang, T.; Wang, P.; Rakitin, V. Comparison and Validation of TROPOMI and OMI NO2 Observations over China. Atmosphere 2020, 11, 636. https://doi.org/10.3390/atmos11060636
Wang C, Wang T, Wang P, Rakitin V. Comparison and Validation of TROPOMI and OMI NO2 Observations over China. Atmosphere. 2020; 11(6):636. https://doi.org/10.3390/atmos11060636
Chicago/Turabian StyleWang, Chunjiao, Ting Wang, Pucai Wang, and Vadim Rakitin. 2020. "Comparison and Validation of TROPOMI and OMI NO2 Observations over China" Atmosphere 11, no. 6: 636. https://doi.org/10.3390/atmos11060636