Characteristics of Atmospheric Boundary Layer Structure during PM2.5 and Ozone Pollution Events in Wuhan, China
Abstract
:1. Introduction
2. Methodology
2.1. Data and Sampling Sites
2.2. Back-Trajectory Analysis
2.3. Potential Source Contribution Function (PSCF)
2.4. Concentration Weighted Trajectory (CWT)
3. Results and Discussion
3.1. Overview of Air Pollution in Wuhan
3.2. Analysis of PM2.5 and O3 Pollution during Winter and Summer
3.3. Analysis of PM2.5 Pollution Process
3.4. Analysis of O3 Pollution Event
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Air Quality Index (AQI) | Air Quality Index Level | Air Quality Index Category |
---|---|---|
0~50 | Level 1 | Excellent |
51~100 | Level 2 | Good |
101~150 | Level 3 | Slightly polluted |
151~200 | Level 4 | Moderate polluted |
201~300 | Level 5 | Heavy pollution |
>300 | Level 6 | Severe pollution |
Date | Air Temperature (°C) | Humidity (%) | Wind Speed (m/s) | Wind Direction | Pressure (hPa) | Characteristics of Inversion Layer | ||
---|---|---|---|---|---|---|---|---|
Strength (°C/100 m) | Altitude (m) | Thickness (m) | ||||||
16 December 2015 | 1.1 | 66 | 3 | 360 | 1032 | 2.5 | 0 | 90 |
17 December 2015 | −3.0 | 96 | 1 | 315 | 1032 | 1.9 | 0 | 220 |
18 December 2015 | −3.0 | 97 | 2 | 113 | 1030 | 4.2 | 0 | 130 |
19 December 2015 | 4.2 | 66 | 1 | 45 | 1028 | 0.2 | 0 | 140 |
20 December 2015 | 4.0 | 85 | 1 | 248 | 1027 | NIL | NIL | NIL |
21 December 2015 | 5.4 | 90 | 2 | 90 | 1023 | NIL | NIL | NIL |
22 December 2015 | 5.5 | 97 | 2 | 360 | 1023 | 0.5 | 360 | 110 |
23 December 2015 | 5.2 | 93 | 2 | 68 | 1021 | 0.2 | 320 | 100 |
24 December 2015 | 5.6 | 97 | 2 | 360 | 1022 | NIL | NIL | NIL |
25 December 2015 | 0.3 | 98 | 0 | C | 1027 | 2.3 | 0 | 270 |
26 December 2015 | 2.2 | 97 | 3 | 158 | 1021 | 2.3 | 0 | 260 |
27 December 2015 | 3.0 | 94 | 2 | 338 | 1024 | 1.9 | 0 | 180 |
28 December 2015 | 2.7 | 90 | 1 | 360 | 1034 | 0.5 | 350 | 250 |
Average | 2.6 | 89.7 | 1.7 | 360 | 1026 | 1.7 | 343m | 175 |
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Mbululo, Y.; Qin, J.; Hong, J.; Yuan, Z. Characteristics of Atmospheric Boundary Layer Structure during PM2.5 and Ozone Pollution Events in Wuhan, China. Atmosphere 2018, 9, 359. https://doi.org/10.3390/atmos9090359
Mbululo Y, Qin J, Hong J, Yuan Z. Characteristics of Atmospheric Boundary Layer Structure during PM2.5 and Ozone Pollution Events in Wuhan, China. Atmosphere. 2018; 9(9):359. https://doi.org/10.3390/atmos9090359
Chicago/Turabian StyleMbululo, Yassin, Jun Qin, Jun Hong, and Zhengxuan Yuan. 2018. "Characteristics of Atmospheric Boundary Layer Structure during PM2.5 and Ozone Pollution Events in Wuhan, China" Atmosphere 9, no. 9: 359. https://doi.org/10.3390/atmos9090359