Particulate matter trends and quantification of the spring sand-dust contribution in Hohhot, Inner Mongolia, from 2013 to 2017

Gao, Wenkang; Zhu, Li; Ma, Zhanyun; Gao, Qingzhu; Yu, Xuepu; Su-fen, WU; Gu, Yansheng

doi:10.1016/j.aosl.2021.100036

Cited by 7 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The eastern section of Korla is primarily composed of the Taklamakan Desert. During spring and summer months, gusty winds prevail, facilitating the transportation of sand and dust particles into the air, resulting in elevated levels of atmospheric PM 29 , 30 . Higher atmospheric PM levels during winter months have two main contributing factors.…”

Section: Resultsmentioning

confidence: 99%

Spatiotemporal changes in fine particulate matter and ozone in the oasis city of Korla, northeastern Tarim Basin of China

Aishan,

Sun,

Halik

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Air pollution is a serious environmental health concern for humans and other living organisms. This study analyzes the spatial and temporal characteristics of air pollutant concentrations, changes in the degree of pollution, and the wavelet coherence of the air quality index (AQI) with pollutants in various monitoring stations. The analysis is based on long-term time series data (January 2016 to December 2023) of air pollutants (PM2.5, PM10, and O3) from Korla, an oasis city in the northeastern part of the Tarim Basin, China. The concentrations of PM2.5, PM10, and O3 in Korla showed a cyclical trend from 2016 to 2023; PM10 concentrations exhibited all-season exceedance and PM2.5 exhibited exceedance only in spring. PM2.5 and PM10 showed a seasonal distribution of spring > winter > fall > summer; O3 concentrations showed a seasonal distribution of summer > spring > fall > winter. Strong positive wavelet coherence between PM and Air Quality Index (AQI) data series suggests that the AQI data series can effectively characterize fluctuating trends in PM concentrations. Moreover, PM10 levels IV and VI were maintained at approximately 10%, indicating that sand and dust have a substantial influence on air quality and pose potential threats to the health of urban inhabitants. Based on the results of this study, future efforts must strengthen relative countermeasures for sand prevention and control, select urban greening species with anti-pollution capabilities, rationally expand urban green spaces, and restrict regulations for reducing particulate matter emissions within city areas.

show abstract

Section: Resultsmentioning

confidence: 99%

Spatiotemporal changes in fine particulate matter and ozone in the oasis city of Korla, northeastern Tarim Basin of China

Aishan,

Sun,

Halik

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Hohhot has a typical semi-arid climate, with a mean annual precipitation of 335.2-534.6 mm, which occurs mainly in summer (Xie et al, 2021). Due to the minimal precipitation and dry continental terrain, frequent dust storms occur in spring (Gao et al, 2021b). It has a coalfired-heating period of 6 months (15 October-15 April the Xie et al, 2021).…”

Section: Study Area and Samplingmentioning

confidence: 99%

Chemical characteristics and sources of PM_2.5 in Hohhot, a semi-arid city in northern China: insight from the COVID-19 lockdown

Zhou

Liu²,

Sun³

et al. 2022

Atmos. Chem. Phys.

View full text Add to dashboard Cite

Abstract. A knowledge gap exists concerning how chemical composition and sources respond to implemented policy control measures for aerosols, particularly in a semi-arid region. To address this, a single year's offline measurement was conducted in Hohhot, a semi-arid city in northern China, to reveal the driving factors of severe air pollution in a semi-arid region and assess the impact of the COVID-19 lockdown measures on chemical characteristics and sources of PM2.5. Organic matter, mineral dust, sulfate and nitrate accounted for 31.5 %, 14.2 %, 13.4 % and 12.3 % of the total PM2.5 mass, respectively. Coal combustion, vehicular emission, crustal source and secondary inorganic aerosols were the main sources of PM2.5 in Hohhot, at 38.3 %, 35.0 %, 13.5 %, and 11.4 %, respectively. Due to the coupling effect of emission reduction and improved atmospheric conditions, the concentration of secondary inorganic components, organic matter and elemental carbon declined substantially from the pre-lockdown (pre-LD) period to the lockdown (LD) and post-lockdown (post-LD) periods. The source contribution of secondary inorganic aerosols increased (from 21.1 % to 37.8 %), whereas the contribution of vehicular emission reduced (from 35.5 % to 4.4 %) due to lockdown measures. The rapid generation of secondary inorganic components caused by unfavorable meteorological conditions during lockdown led to serious pollution. This study elucidates the complex relationship between air quality and environmental policy.

show abstract

“…However, the central region of Inner Mongolia is one of the largest coal chemical bases in China, and its air quality has been greatly affected. Therefore, how to better improve the air quality of Inner Mongolia's central cities while ensuring the supply of energy in the Beijing-Tianjin-Hebei region has become the primary problem to be solved in the protection of atmospheric environment in this region (Qiu et al, 2017;Gao et al, 2021). And it is also the key problem of air pollution prevention and control in the region in the future.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the temporal and spatial pattern of air pollution and the heterogeneity of its influencing factors in central Inner Mongolia from 2016 to 2018

Wang

Li²,

Xu³

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

The central region of Inner Mongolia is the northern ecological safety barrier of Beijing and even the whole country. It is one of the main sources of dust in North China, and air pollution control is the top priority in this region. In this study, the central region of Inner Mongolia was selected as the study area, multiple auxiliary variables were used to estimate the spatial distribution of PM2.5 concentration from 2016 to 2018 by geographically weighted regression, and the socioeconomic determinants of PM2.5 concentration were analyzed by geographic detectors. The results show that: 1) the established model can better estimate the spatial distribution of PM2.5 concentration in the study area, and the monthly mean correlation coefficient R of the verification parameters is stable, ranging from 0.58 to 0.66. 2) PM2.5 concentration in central Inner Mongolia showed significant temporal and spatial variation. The mean annual PM2.5 concentration along the Yellow River basin is the highest in the study area. PM2.5 concentration first increased and then decreased from 2016 to 2018. 3) Urban built-up area, permanent population and per capita GDP are the key factors affecting the spatial and temporal distribution of PM2.5 concentration in the study area. The results of this study provide theoretical basis and technical support for air pollution monitoring, management and prevention in central Inner Mongolia.

show abstract

Particulate matter trends and quantification of the spring sand-dust contribution in Hohhot, Inner Mongolia, from 2013 to 2017

Cited by 7 publications

References 14 publications

Spatiotemporal changes in fine particulate matter and ozone in the oasis city of Korla, northeastern Tarim Basin of China

Spatiotemporal changes in fine particulate matter and ozone in the oasis city of Korla, northeastern Tarim Basin of China

Chemical characteristics and sources of PM_2.5 in Hohhot, a semi-arid city in northern China: insight from the COVID-19 lockdown

Analysis of the temporal and spatial pattern of air pollution and the heterogeneity of its influencing factors in central Inner Mongolia from 2016 to 2018

Contact Info

Product

Resources

About

Particulate matter trends and quantification of the spring sand-dust contribution in Hohhot, Inner Mongolia, from 2013 to 2017

Cited by 7 publications

References 14 publications

Spatiotemporal changes in fine particulate matter and ozone in the oasis city of Korla, northeastern Tarim Basin of China

Spatiotemporal changes in fine particulate matter and ozone in the oasis city of Korla, northeastern Tarim Basin of China

Chemical characteristics and sources of PM2.5 in Hohhot, a semi-arid city in northern China: insight from the COVID-19 lockdown

Analysis of the temporal and spatial pattern of air pollution and the heterogeneity of its influencing factors in central Inner Mongolia from 2016 to 2018

Contact Info

Product

Resources

About

Chemical characteristics and sources of PM_2.5 in Hohhot, a semi-arid city in northern China: insight from the COVID-19 lockdown