Typhoon-boosted biogenic emission aggravates cross-regional ozone pollution in China

Wang, Nan; Huang, Xin; Xu, Jiawei; Wang, Tong; Tan, Zhimin; Ding, Aijun

doi:10.1126/sciadv.abl6166

Cited by 45 publications

(60 citation statements)

References 58 publications

(76 reference statements)

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“…As discussed in Wang et al. (2022), the relatively short eastward delay of O 3 wrt PM 2.5 in TC conditions (1.1°) compared to the average result (1.4°) could also be the enhanced long‐term cross‐regional transport of biogenic emissions and O 3 which enhances the formation efficieny of O 3 pollution. As shown in Figures 8c–8e, the position of TC centers and their averaged moving direction are marked relative to the O 3 pollution (0°, 0°) based on Figure 5.…”

Section: Spatial and Temporal Offsets Of O3 Pm25 And Tcsmentioning

confidence: 76%

“…Basically, the anthropogenic emissions of air pollutants, particularly particulate matters, have been reduced dramatically in recent years since the strict air pollution control measures that launched by Chinese government were in place. Furthermore, as discussed in Wang et al (2022), biogenic emissions transport can be greatly enhanced by TCs and could result in intensified chemical interactions between biogenic and anthropogenic emissions. Changes in anthropogenic and biogenic emissions therefore complicate the relationships of TCs and PM 2.5 and O 3 pollution.…”

Section: Methodsmentioning

confidence: 99%

“…Detailed analysis requires a well‐tested model that can reproduce the formation and transportation of these pollutants such as the study by Wang et al. (2022).…”

Section: Spatial and Temporal Offsets Of O3 Pm25 And Tcsmentioning

confidence: 99%

“…The westward displacement of PM 2.5 pollution wrt O 3 pollution (especially those with westward displacement more than 4°) may be evidence that on average O 3 pollution occur 1-2 days after PM 2.5 pollution (this appears to be consistent with the conclusion of Figure 7) has moved to the west since air pollution typically propagate northwestward due to TC systems. As discussed in Wang et al (2022), the relatively short eastward delay of O 3 wrt PM 2.5 in TC conditions (1.1°) compared to the average result (1.4°) could also be the enhanced long-term concentrations (shaded squares) as a function of TC intensity and distance (degrees) accounting polluted grids only using all selected TCs; (e and f): same as c&d but for C1; (g and h): same as c&d but for C2; (i and j): same as c&d but for C3. cross-regional transport of biogenic emissions and O 3 which enhances the formation efficieny of O 3 pollution.…”

Section: Spatial and Temporal Offsets Of O 3 Pm 25 And Tcsmentioning

confidence: 99%

“…Regional transport of PM 2.5 , O 3 and their precusors due to TC could also enhance the formation of PM 2.5 and O 3 pollution. Wang et al (2022) found that approaching TCs could greatly enhance biogenic emissions and cross-regional transport effects that lead to intensified interactions between anthropogenic and biogenic emissions, and as a result, accelerated the formation efficiency of O 3 pollution in the Yangtze River Delta (YRD) and PRD regions. Furthermore, high temperature, strong solar radiation, and TCs periphery associated sea breeze could affect biogenic emissions (e.g., biogenic volatile organic compounds, BVOCs) as well as transportation of particulate chloride (Cl − ) rich sea-salt over coastal regions.…”

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confidence: 99%

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Co‐Occurrence of Surface O₃, PM_2.5 Pollution, and Tropical Cyclones in China

et al. 2022

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Extreme weather events are on the rise against the backdrop of climate change. Impact of tropical cyclone (TC) system, one of the extreme weather events, on air pollution remain poorly understood. A total of 103 recorded TCs (tropical storms and stronger) together with the surface air quality data collected from over 2000 observational sites in mainland China in 2014–2020 were utilized to examine the co‐occurrence of TC with continental ozone (O3) and fine particulate matters (PM2.5) pollution. TCs exhibit cleaning effects on PM2.5 within its coverage (typically ∼650 km), but enhance the co‐occurrence of O3 and PM2.5 in an extended region. The co‐occurrence frequencies are greater than 30% for any two co‐occurring events, and ∼8% for TC + PM2.5 + O3. We observed superregional trans‐boundary transportation of air pollutants driven by TC, led to ubiquitous spatial offsets and temporal lags of O3, PM2.5 pollution and TC, which are often inconsistent with traditional mechanisms such as accelerated chemical reactions for O3 formation. O3 pollution tends to occur 1∼2 days after PM2.5 pollution moved west. In contrast, PM2.5 pollution usually occur 4–12 hr following O3 pollution within a day over most regions except the southeast of China. Such spatial and temporal offsets vary with the paths of TCs. Composite analysis shows that temperature, wind field and large pressure systems are the key factors for air pollution formation and transportation over TC periphery. Our results have implications for understanding the interactions between TCs and air pollution, particularly for coastal areas where there are recurring TCs.

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Section: Spatial and Temporal Offsets Of O3 Pm25 And Tcsmentioning

confidence: 76%

Section: Methodsmentioning

confidence: 99%

“…Detailed analysis requires a well‐tested model that can reproduce the formation and transportation of these pollutants such as the study by Wang et al. (2022).…”

Section: Spatial and Temporal Offsets Of O3 Pm25 And Tcsmentioning

confidence: 99%

Section: Spatial and Temporal Offsets Of O 3 Pm 25 And Tcsmentioning

confidence: 99%

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confidence: 99%

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