Aerosol optical properties affected by a strong dust storm over central and northern China

Xin, Jinyuan; Du, Wei; Wang, Yuesi; Gao, Qingzhu; Li, Zhanqing; Wang, Mingxing

doi:10.1007/s00376-009-9023-5

Cited by 23 publications

(13 citation statements)

References 38 publications

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“…MD has a profound impact on the radiative balance of the Earth by scattering and absorbing solar radiation Wang et al, 2010;Li et al, 2016;Yang et al, 2016a); it can also act as cloud condensation nuclei to alter the precipitation rate and hydrological cycle of the Earth Zhao and Garrett, 2015;Li et al, 2017). East Asia includes the Taklimakan, Tengger, Badain Jaran, and Gobi deserts and is thus considered to be one of the major source regions of natural dust in the world, as it produces large amounts of natural mineral dust (Zhang et al, 1997;Wang et al, 2008;Che et al, 2011Che et al, , 2013Ge et al, 2014;Xin, 2005Xin, , 2010Xin, , 2015. The long-range transport of MDs from dust source regions has a significant influence on aerosol radiative forcing and changing environment Ge et al, 2011;Huang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Optical and microphysical properties of natural mineral dust and anthropogenic soil dust near dust source regions over northwestern China

et al. 2018

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Abstract. Mineral dust aerosols (MDs) not only influence the climate by scattering and absorbing solar radiation but also modify cloud properties and change the ecosystem. From 3 April to 16 May 2014, a ground-based mobile laboratory was deployed to measure the optical and microphysical properties of MDs near dust source regions in Wuwei, Zhangye, and Dunhuang (in chronological order) along the Hexi Corridor over northwestern China. Throughout this dust campaign, the hourly averaged (±standard deviation) aerosol scattering coefficients (σ sp , 550 nm) of the particulates with aerodynamic diameters less than 2.5 µm (PM 2.5 ) at these three sites were sequentially 101.5 ± 36.8, 182.2 ± 433.1, and 54.0 ± 32.0 Mm −1 . Correspondingly, the absorption coefficients (σ ap , 637 nm) were 9.7 ± 6.1, 6.0 ± 4.6, and 2.3 ± 0.9 Mm −1 ; single-scattering albedos (ω, 637 nm) were 0.902 ± 0.025, 0.931 ± 0.037, and 0.949 ± 0.020; and scattering Ångström exponents (Å sp , 450-700 nm) of PM 2.5 were 1.28 ± 0.27, 0.77 ± 0.51, and 0.52 ± 0.31. During a severe dust storm in Zhangye (i.e., from 23 to 25 April), the highest values of σ 2.5 sp (∼ 5074 Mm −1 ), backscattering coefficient (σ 2.5 bsp , ∼ 522 Mm −1 ), and ω 637 (∼ 0.993) and the lowest values of backscattering fraction (b 2.5 , ∼ 0.101) at 550 nm and Å 2.5 sp (∼ −0.046) at 450-700 nm, with peak values of aerosol number size distribution (appearing at the particle diameter range of 1-3 µm), exhibited that the atmospheric aerosols were dominated by coarse-mode dust aerosols. It is hypothesized that the relatively higher values of mass scattering efficiency during floating dust episodes in Wuwei and Zhangye are attributed to the anthropogenic soil dust produced by agricultural cultivations.

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Section: Introductionmentioning

confidence: 99%

Optical and microphysical properties of natural mineral dust and anthropogenic soil dust near dust source regions over northwestern China

et al. 2018

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“…In spring, the long-range transport of dust aerosols from desert regions not only has an impact on northwestern cities such as Xi'an (Wang et al, 2006b), or cities in the north of eastern China such as Beijing, Xianghe, and Shenyang (Xin et al, 2010;Zhang et al, 1998), but also on cities in the YRD region such as Nanjing, Shanghai , and Hangzhou. When transported dust particles dominate in the ambient atmosphere over the YRD region, the aerosol optical properties show a relatively high level of absorptive features, much stronger than in aerosols transported from the north.…”

Section: Pollutants Transported From Desert Areasmentioning

confidence: 99%

“…Many studies have been conducted on the aerosol optical properties and their variations in the cities of the YRD, such as Shanghai, Nanjing, Lin'an, and Taihu Pan et al, 2010;He et al, 2012;Ding et al, 2013;Liu et al, 2015;Xing et al, 2017). Particularly in Hangzhou, the capital city of Zhejiang province, some researchers have focused on determining the seasonal variation of aerosol properties, chemical compositions, and particulate matter (PM) concentrations (Qi, 2016;Ming et al, 2017;Xiao et al, 2011), or single-case analyses on features of a particular pollution process Fu et al, 2014;. However, research into the sources of pollutants in the YRD region is still needed to understand the mechanisms underlying haze pollution.…”

Section: Introductionmentioning

confidence: 99%

Aerosol optical characteristics and their vertical distributions under enhanced haze pollution events: effect of the regional transport of different aerosol types over eastern China

Sun

Che

et al. 2018

Atmos. Chem. Phys.

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Abstract. The climatological variation of aerosol properties and the planetary boundary layer (PBL) during 2013-2015 over the Yangtze River Delta (YRD) region were investigated by employing ground-based Micro Pulse Lidar (MPL) and CE-318 sun-photometer observations. Combining Moderate Resolution Imaging Spectroradiometer (MODIS) and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite products, enhanced haze pollution events affected by different types of aerosol over the YRD region were analyzed through vertical structures, spatial distributions, backward trajectories, and the potential source contribution function (PSCF) model. The results show that aerosols in the YRD are dominated by fine-mode par-

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“…The level of air pollution has seriously affected sustainable socioeconomic development and human health (Mao, 1997;Wang and Wang, 2007). Situated upstream of the Asian dust passage, the pollutants fromÜrümqi are transported to other places such as central and eastern China (Kaiser and Qian, 2002;Yuan et al, 2006;Xin et al., 2010). Compared to other seasons, the heaviest urban-pollution episodes occur during the winter heating period, due to the combustion of coal used for heating homes and buildings during the winter, and the unfavorable dispersion due to geographical and meteorological conditions (Huang, 2005;Guo et al, 2006;Wang et al, 2008).…”

Section: Introductionmentioning

confidence: 96%

Using synoptic classification and trajectory analysis to assess air quality during the winter heating period in Ürümqi, China

Wang

Sun

et al. 2012

Adv. Atmos. Sci.

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Synoptic patterns identified by an automated procedure employing principal-component analysis and a two-stage cluster analysis, and backward trajectory analysis clustered by the HYSPLIT4.9 model were used to examine air quality patterns overÜrümqi, China, one of the most heavily polluted cities in the world. Six synoptic patterns representing different atmospheric circulation patterns and air-mass characteristics were classified during the winter heating periods from 2001 to 2008, and seven trajectory clusters representing different paths of air masses arriving atÜrümqi were calculated during the winter heating periods from 2005 to 2008. Then air quality was evaluated using these two approaches, and significant variations were found across both synoptic patterns and trajectory clusters. The heaviest air-pollution episodes occurred whenÜrümqi was either in an extremely cold, strong anticyclone or at the front of a migrating cyclone. Both conditions were characterized by with light winds, cold, wet surface air, and relatively dry upper air. Urümqi was predominately influenced by air masses from the southwest and from local areas. Air pollution index (API) levels were highest for air masses originating from the southwest with a longer path or for the local area, because of transport from semi-desert/desert regions by strong winds and because of local heavy pollution emissions, respectively. The interactions between these two analytical approaches showed that poor diffusion conditions, together with local circulation, enhanced air pollution, besides, regional air-mass transport caused by strong winds contributed to serious air quality under relatively good diffusion conditions. , 2012: Using synoptic classification and trajectory analysis to assess air quality during the winter heating period inÜrümqi, China.

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Aerosol optical properties affected by a strong dust storm over central and northern China

Cited by 23 publications

References 38 publications

Optical and microphysical properties of natural mineral dust and anthropogenic soil dust near dust source regions over northwestern China

Optical and microphysical properties of natural mineral dust and anthropogenic soil dust near dust source regions over northwestern China

Aerosol optical characteristics and their vertical distributions under enhanced haze pollution events: effect of the regional transport of different aerosol types over eastern China

Using synoptic classification and trajectory analysis to assess air quality during the winter heating period in Ürümqi, China

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