Boundary layer perspective assessment of air pollution status in Wuhan city from 2013 to 2017

Mbululo, Yassin; Qin, Jun; Yuan, Zhengxuan; Nyihirani, Fatuma; Zheng, Xiaodong

doi:10.1007/s10661-019-7206-9

Cited by 16 publications

(8 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar processes have also been reported by Hu et al (2021) and Lu et al (2019). In addition to these trans-boundary transport processes, the local-scale planetary boundary layer (PBL) also plays a critical role in the formation of PM 2.5 pollution (Liu et al, 2018;Mbululo et al, 2019;Xiao et al, 2020). Because the PBL governs the vertical exchange of energy, matter, and heat between surface and upper free atmosphere, the height of boundary layer (BLH) is widely used to quantify the volume for pollutant dispersion and dilution (Stull, 1988;Miao and Liu, 2019).…”

Section: Introductionsupporting

confidence: 75%

“…The city is crossed by the transportation routes of road, rail, and river from almost every direction, linking the north, south, west, and east parts of China. This unique geographical location (Supplementary Figure S1) makes it subject to the influence of air masses/pollutants moved from every direction (Mbululo et al, 2019;. For example, during a pollution episode in November 2017, large amounts of aerosols were transported to Wuhan from North China along with the movement of cold air masses (Xiao et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Because the PBL governs the vertical exchange of energy, matter, and heat between surface and upper free atmosphere, the height of boundary layer (BLH) is widely used to quantify the volume for pollutant dispersion and dilution (Stull, 1988;Miao and Liu, 2019). Within the PBL, near-surface inversion layer and calm wind condition were often found to be associated with the PM 2.5 pollution in Wuhan (Mbululo et al, 2019;Miao and Liu, 2019). Although the importance of regionalscale synoptic condition (Xiao et al, 2020) or local-scale PBL thermal structure (Miao and Liu, 2019) for the PM 2.5 pollution in Wuhan has been pointed out, the connection between these multi-scale atmospheric processes and their integrated effects on pollution are not yet clear understood, particularly in the heavily polluted winter.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Multi-Scale Meteorological Processes on PM2.5 Pollution in Wuhan, Central China

Miao

Zhang

Che

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

Heavy PM2.5 (particulate matter with an aerodynamics diameter less than 2.5 μm) pollution frequently happens in Wuhan under unfavorable meteorological conditions. To comprehensively understand the complex impact of both regional-scale synoptic forcing and local-scale processes within the planetary boundary layer (PBL) on air quality in Wuhan, this study analyzed long-term PM2.5 concentration measurement, near-surface and upper-air meteorological observations from March 2015 to February 2019, in combination with the Modern-Era Retrospective Analysis for Research and Applications version 2 (MERRA-2). We found that in winter the day-to-day change of PM2.5 pollution level in Wuhan was governed by the synoptic warm/cold advection, in addition to the high emissions of pollutants. The synoptic condition can largely determine both the vertical development of PBL and horizontal transport of pollutants. When a high-pressure system is located to the north of Wuhan at the 900-hPa level, the induced warm advection above 1,000 m can enhance the thermal stability of lower troposphere and inhibit the development of daytime PBL, leading to a decreased dispersion volume for pollutants. Meanwhile, within the PBL the pollutants emitted from Henan, Shandong, and Anhui provinces can be transported to Wuhan, further worsening the pollution. Our results highlight the importance of coordinated pollution controls in Central China and adjacent north regions under the unfavorable synoptic condition.

show abstract

Section: Introductionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Multi-Scale Meteorological Processes on PM2.5 Pollution in Wuhan, Central China

Miao

Zhang

Che

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The air pollution is severe because of the drastic urbanization and industrial expansion. During 2013 to 2017, average annual limit of PM 10 , PM 2.5 , NO 2 were 1.3 ~ 1.8, 1.5 ~ 2.7 and 1.2 ~ 1.5 times higher than the annual average acceptable limit, respectively [2]. Therefore, exploring the associations between air pollution and health in Wuhan is of great importance.…”

Section: Introductionmentioning

confidence: 97%

Association Between Ambient Air Pollution and Mortality From Chronic Obstructive Pulmonary Disease in Wuhan, China: a Population-based Time-series Study

Yan

She

Guo

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Previous studies have mainly focused on the associations between air pollution and total respiratory disease mortality. However, evidence on the short-term effects of air pollution on chronic obstructive pulmonary disease (COPD) mortality is still not conclusive to date. The aim of this study was to investigate the short-term effects of ambient air pollution on COPD mortality in Wuhan China.Methods: Daily death numbers, concentrations of air pollutants (PM2.5, PM10, SO2, NO2, and O3) and meteorological characteristics in Wuhan between January 1, 2014 to December 31, 2019 were collected. Time-series analysis using generalized additive model was applied to evaluated the association between ambient air pollution and daily COPD mortality. Subgroup analysis by age (<65 and ≥65 year) and sex (male and female) were also conducted. Results: During the study period, we observed a total of 16150 deaths(7.37 deaths per day) from COPD. The daily average concentrations of PM2.5, PM10, SO2, NO2 and O3 were 59.03, 90.48, 12.91, 48.84 and 91.77 µg/m3, respectively. In single pollutant model, for every increase of 10 µg/m3 in PM10, SO2, NO2 levels, COPD mortality increased by 0.581%(95CI:0.054%-1.111%), 4.316%(95CI:1.002%-7.738%) and 1.815%(95CI:0.523%-3.125%) at lag03, respectively. No significant associations were found for PM2.5 and O3. Subgroup analysis demonstrated that females were more susceptible to PM2.5, PM10, SO2 and NO2, in addition the concentrations of PM10, SO2 and NO2 were significantly associated with COPD mortality for older adults. In two-pollutant models, the significantly positive associations between SO2 as well as NO2 and COPD mortality remained after adjusting for PM2.5 or O3.Conclusions: Short-term exposure to PM10, SO2, and NO2 are significantly associated with a higher risk of COPD mortality. Female or elderly are more susceptible to air pollution. Further research is required to reveal the underlying mechanisms. The implementation of the environmental protection policy has become urgent.

show abstract

“…Furthermore, the air quality index has often been introduced into the study of air quality in recent years [27][28][29]. Daily air pollution data from nine monitoring stations in Wuhan was used to calculate the air quality index, which found that the number of polluted days was decreasing from 2013 to 2017 [30]. A new efficiency evaluation model based on evidential reasoning (IER) model and the interval data envelopment analysis (IDEA) model is proposed to evaluate air pollution [31].…”

Section: Introductionmentioning

confidence: 99%

Evaluate Air Pollution by Promethee Ranking in Yangtze River Delta of China

Chen

et al. 2020

IJERPH

View full text Add to dashboard Cite

A series of problems that are related to population, resources, environment, and ecology have emerged in recent years with the advancement of industrialization and urbanization in China. Especially, air pollution has become a severe trouble that directly endangers the health of residents. Accordingly, it is a need to make the assessment of air quality among cities, so that corresponding measures can be taken. For this purpose, ten major cities are selected as the research objects in Yangtze River Delta. Additionally, this study gathers and processes the data of five main air pollutants PM2.5, PM10, SO2, O3, and NO2, respectively. Furthermore, the maximizing deviation method is used to obtain the respective weight of these pollutants and the preference ranking organization method for enrichment evaluations (PROMETHEE) is introduced into the assessment of air quality among ten cities. As a result, the ranking of air quality in Ningbo, Wenzhou, Shanghai, and Shaoxing was at the fore from 2014 to 2017. Meanwhile, the performance of Ningbo has always kept the top two and Shaoxing’s ranking has risen since 2015. In addition, the air quality of Changzhou, Suzhou and Hangzhou was at an average level in the past four years. Moreover, the performance of Nanjing, Wuxi, and Zhenjiang was terrible when compared to other cities. Some useful suggestions have been proposed to control air quality based on the ranking results.

show abstract

Boundary layer perspective assessment of air pollution status in Wuhan city from 2013 to 2017

Cited by 16 publications

References 32 publications

Influence of Multi-Scale Meteorological Processes on PM2.5 Pollution in Wuhan, Central China

Influence of Multi-Scale Meteorological Processes on PM2.5 Pollution in Wuhan, Central China

Association Between Ambient Air Pollution and Mortality From Chronic Obstructive Pulmonary Disease in Wuhan, China: a Population-based Time-series Study

Evaluate Air Pollution by Promethee Ranking in Yangtze River Delta of China

Contact Info

Product

Resources

About