Differences in the Vertical Distribution of Aerosols, Nitrogen Dioxide, and Formaldehyde between Islands and Inland Areas: A Case Study in the Yangtze River Delta of China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Observation Site
2.2. Spectral Analysis and DOAS Vertical Profile Retrieval
2.3. Potential Source Analysis
2.4. Ancillary Data
2.5. Data Verification
3. Results
3.1. Spatiotemporal Variations of AE, NO2, and HCHO
3.2. Vertical Profiles of Aerosols, NO2 and HCHO
4. Discussion
4.1. Diurnal and Weekly Variations of Aerosols, NO2, and HCHO
4.2. Differences in Potential Sources of Aerosols, NO2, and HCHO between Islands and Inland Areas
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Parameter | Data Source | Fitting Interval (nm) | |
---|---|---|---|
O4/NO2 | HCHO | ||
Wavelength range | 338–370 | 322.5–358 | |
NO2 | 298 K, I0 correction (SCD of 1017 molecules cm−2) [29] | √ | √ |
NO2 | 220 K, I0 correction (SCD of 1017 molecules cm−2) [29] | √ | √ |
O3 | 223 K, I0 correction (SCD of 1020 molecules cm−2) [30] | √ | √ |
O3 | 243 K, I0 correction (SCD of 1020 molecules cm−2) [30] | √ | √ |
O4 | 293 K [31] | √ | √ |
BrO | 223 K [32] | √ | √ |
H2O | 296 K, HITEMP [33] | √ | × |
HCHO | 297 K [34] | √ | √ |
Ring | Calculated with QDOAS [35] | √ | √ |
Wavelength calibration | A high-resolution solar reference spectrum (SAO2010 solar spectra) [36] | √ | √ |
Polynomial degree | Order 3 | Order 5 | |
Intensity offset | Constant | Constant |
ZS_NO2 | ZS_HCHO | ZS_AE | |
---|---|---|---|
ZS_NO2 | 1 | ||
ZS_HCHO | 0.98 ** | 1 | |
ZS_AE | −0.19 | −0.19 | 1 |
ZS_T | 0.14 | 0.18 | −0.74 ** |
ZS_RH | 0.65 * | 0.64 * | 0.19 |
ZS_WD | 0.116 | 0.04 | 0.74 ** |
ZS_WS | −0.22 | −0.25 | 0.35 |
NJ_NO2 | NJ_HCHO | NJ_AE | |
---|---|---|---|
NJ_NO2 | 1 | ||
NJ_HCHO | −0.16 | 1 | |
NJ_AE | 0.34 | 0.73 * | 1 |
NJ_T | 0.38 | −0.71 * | −0.18 |
NJ_RH | 0.65 * | −0.83 ** | −0.35 |
NJ_WD | −0.45 | 0.81 ** | 0.29 |
NJ_WS | −0.72 * | 0.70 * | 0.19 |
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Ou, J.; Hu, Q.; Xing, C.; Zhu, Y.; Feng, J.; Wang, X.; Ji, X.; Lin, H.; Yin, H.; Liu, C. Differences in the Vertical Distribution of Aerosols, Nitrogen Dioxide, and Formaldehyde between Islands and Inland Areas: A Case Study in the Yangtze River Delta of China. Remote Sens. 2023, 15, 5475. https://doi.org/10.3390/rs15235475
Ou J, Hu Q, Xing C, Zhu Y, Feng J, Wang X, Ji X, Lin H, Yin H, Liu C. Differences in the Vertical Distribution of Aerosols, Nitrogen Dioxide, and Formaldehyde between Islands and Inland Areas: A Case Study in the Yangtze River Delta of China. Remote Sensing. 2023; 15(23):5475. https://doi.org/10.3390/rs15235475
Chicago/Turabian StyleOu, Jinping, Qihou Hu, Chengzhi Xing, Yizhi Zhu, Jiaxuan Feng, Xinqi Wang, Xiangguang Ji, Hua Lin, Hao Yin, and Cheng Liu. 2023. "Differences in the Vertical Distribution of Aerosols, Nitrogen Dioxide, and Formaldehyde between Islands and Inland Areas: A Case Study in the Yangtze River Delta of China" Remote Sensing 15, no. 23: 5475. https://doi.org/10.3390/rs15235475
APA StyleOu, J., Hu, Q., Xing, C., Zhu, Y., Feng, J., Wang, X., Ji, X., Lin, H., Yin, H., & Liu, C. (2023). Differences in the Vertical Distribution of Aerosols, Nitrogen Dioxide, and Formaldehyde between Islands and Inland Areas: A Case Study in the Yangtze River Delta of China. Remote Sensing, 15(23), 5475. https://doi.org/10.3390/rs15235475