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Characterization of bacterial communities during persistent fog and haze events in the Qingdao coastal

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1334-x

Abstract:

• Light haze had little effect on bacterial communities.

Keywords： Bacterial community     Persistent fog and haze     Particle size    

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Modeling radiative effects of haze on summer-time convective precipitation over North China: a case study

Xuying WANG, Bin ZHANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0840-3

Abstract: We modeled the impact of haze radiative effects on precipitation in North China.Shortwave heating induced by haze radiative effects would reduce heavy rainfalls.The impact of haze radiative effect on summertime 24-h convective precipitation over North China wasThe haze radiative effect was represented by incorporating an idealized aerosol optical profile, withHaze weakened the convection over places with precipitation suppression exceeding 30 mm and caused less

Keywords： Haze     Aerosol radiative effects     Convective precipitation    

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Secondary aerosol formation in winter haze over the Beijing-Tianjin-Hebei Region, China

Dongjie Shang, Jianfei Peng, Song Guo, Zhijun Wu, Min Hu

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1326-x

Abstract: . • Mechanisms of secondary aerosol formation in winter haze of North China are reviewed. • DirectionsSevere haze pollution occurs frequently in the winter over the Beijing-Tianjin-Hebei (BTH) region (ChinaHowever, the level of secondary aerosols during heavy haze episodes showed little decrease during thisThis paper reviews the research progress in aerosol chemistry during haze pollution episodes in the BTHregion, lays out the challenges in haze formation studies, and provides implications and directions

Keywords： Secondary aerosol formation     Regional haze     Photochemical reaction     Aqueous reaction     Chemical mechanism    

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Discussions in prediction and precaution about haze

Zhang Kui

Strategic Study of CAE 2015, Volume 17, Issue 1,   Pages 103-113

Abstract: weather， using digital information method found the relationship between occurrence， development of hazePrediction and precaution of haze need to correctly grasp tumble state of the lower atmosphere near theThe formation of haze both has anthropogenic emissions also has the release of underground pollutantsAnd geothermal can be taken as premonitory information of haze weather forecast.

Keywords： visibility； haze； digital information prediction method； precaution    

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Local and regional contributions to PM in the Beijing 2022 Winter Olympics infrastructure areas during haze

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1434-2

Abstract: List>

• Regional transportation contributed more than local emissions during haze

Keywords： 2022 Winter Olympics     PM2.5     Source apportionment    

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Improving simulations of sulfate aerosols during winter haze over Northern China: the impacts of heterogeneous

Meng Gao,Gregory R. Carmichael,Yuesi Wang,Dongsheng Ji,Zirui Liu,Zifa Wang

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0878-2

Abstract: The newly added reaction reproduces sulfate concentrations well during winter haze.We implemented the online coupled WRF-Chem model to reproduce the 2013 January haze event in North Chinaheterogeneous oxidation of dissolved SO by nitrogen dioxide (NO ) on sulfate formation during winter haze

Keywords： Sulfate aerosols     Winter haze     WRF-Chem     Northern China    

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Characteristics and mixing state of S-rich particles in haze episodes in Beijing

Jun Hu, Fengkui Duan, Kebin He, Yongliang Ma, Shuping Dong, Xiande Liu

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 5, doi: 10.1007/s11783-016-0861-y

Abstract: with online observation was conducted to examine the S-rich particles in PM of two typical polluted haze

Keywords： S-rich particles     Morphology     Element distribution     Mixing state    

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Accelerated haze removal for a single image by dark channel prior Research Articles

Bo-xuan YUE, Kang-ling LIU, Zi-yang WANG, Jun LIANG

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 8,   Pages 1109-1118 doi: 10.1631/FITEE.1700148

Abstract: Haze scatters light transmitted in the air and reduces the visibility of images.Dealing with haze is still a challenge for image processing applications nowadays.For the purpose of haze removal, we propose an accelerated dehazing method based on single pixels.

Keywords： Haze removal     Dark channel prior     Hazy image model     Bilateral filtering    

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Formation of secondary inorganic aerosol in a frigid urban atmosphere

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1452-0

Abstract:

•Harbin showed relatively high threshold RH (80%) for apparent increase of SOR.

Keywords： Haze     Sulfate     Nitrate     Heterogeneous chemistry     Biomass burning     Northeast China    

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Environmental and Dynamic Conditions for the Occurrence of Persistent Haze Events in North China

Yihui Ding,Ping Wu,Yanju Liu,Yafang Song

Engineering 2017, Volume 3, Issue 2,   Pages 266-271 doi: 10.1016/J.ENG.2017.01.009

Abstract:

This paper presents a concise summary of recent studies on the long-term variations of haze in NorthChina and on the environmental and dynamic conditions for severe persistent haze events.Results indicate that haze days have an obviously rising trend over the past 50 years in North China.The occurrence frequency of persistent haze events has a similar rising trend due to the continuous riselower troposphere, providing sufficient moisture for the formation of haze.

Keywords： North China     Persistent haze events     Environmental conditions     Dynamic conditions    

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Influence of Human Activities on Wintertime Haze-Related Meteorological Conditions over the Jing–Jin–Ji Article

Ying Xu, Yanju Liu, Zhenyu Han, Botao Zhou, Yihui Ding, Jie Wu, Tongfei Tian, Rouke Li, Jing Wang

Engineering 2021, Volume 7, Issue 8,   Pages 1185-1192 doi: 10.1016/j.eng.2020.03.015

Abstract: and discusses the influence of human activities on the meteorological conditions related to winter hazehuman activities, the changes in dynamical and thermal meteorological conditions related to winter hazeevents in the Jing–Jin–Ji region are conducive to the formation and accumulation of hazeThe relative contribution of dynamical and thermal conditions to the variation of haze days in the JingTo be specific, the dynamical meteorological factors contribute more to the haze days than the thermal

Keywords： Meteorological conditions     Human activities     Haze     Jing–Jin–Ji region    

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How aerosol direct effects influence the source contributions to PM

Litao Wang, Joshua S. Fu, Wei Wei, Zhe Wei, Chenchen Meng, Simeng Ma, Jiandong Wang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 3, doi: 10.1007/s11783-018-1014-2

Abstract: Beijing-Tianjin-Hebei area is the most air polluted region in China and the three neighborhood southern Hebei cities, Shijiazhuang, Xingtai, and Handan, are listed in the top ten polluted cities with severe PM pollution. The objective of this paper is to evaluate the impacts of aerosol direct effects on air quality over the southern Hebei cities, as well as the impacts when considering those effects on source apportionment using three dimensional air quality models. The WRF/Chem model was applied over the East Asia and northern China at 36 and 12 km horizontal grid resolutions, respectively, for the period of January 2013, with two sets of simulations with or without aerosol-meteorology feedbacks. The source contributions of power plants, industrial, domestic, transportation, and agriculture are evaluated using the Brute-Force Method (BFM) under the two simulation configurations. Our results indicate that, although the increases in PM concentrations due to those effects over the three southern Hebei cities are only 3%–9% on montly average, they are much more significant under high PM loadings (~50 μg·m when PM concentrations are higher than 400 μg m ). When considering the aerosol feedbacks, the contributions of industrial and domestic sources assessed using the BFM will obviously increase (e.g., from 30%–34% to 32%–37% for industrial), especially under high PM loadings (e.g., from 36%–44% to 43%–47% for domestic when PM >400 μg·m ). Our results imply that the aerosol direct effects should not be ignored during severe pollution episodes, especially in short-term source apportionment using the BFM.

Keywords： Aerosol direct effect     PM2.5     Southern Hebei     WRF/Chem     Haze    

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Title Author Date Type Operation

Characterization of bacterial communities during persistent fog and haze events in the Qingdao coastal

Journal Article

Modeling radiative effects of haze on summer-time convective precipitation over North China: a case study

Xuying WANG, Bin ZHANG

Journal Article

Secondary aerosol formation in winter haze over the Beijing-Tianjin-Hebei Region, China

Dongjie Shang, Jianfei Peng, Song Guo, Zhijun Wu, Min Hu

Journal Article

Discussions in prediction and precaution about haze

Zhang Kui

Journal Article

Local and regional contributions to PM in the Beijing 2022 Winter Olympics infrastructure areas during haze

Journal Article

Improving simulations of sulfate aerosols during winter haze over Northern China: the impacts of heterogeneous

Meng Gao,Gregory R. Carmichael,Yuesi Wang,Dongsheng Ji,Zirui Liu,Zifa Wang

Journal Article

Characteristics and mixing state of S-rich particles in haze episodes in Beijing

Jun Hu, Fengkui Duan, Kebin He, Yongliang Ma, Shuping Dong, Xiande Liu

Journal Article

Accelerated haze removal for a single image by dark channel prior

Bo-xuan YUE, Kang-ling LIU, Zi-yang WANG, Jun LIANG

Journal Article

Formation of secondary inorganic aerosol in a frigid urban atmosphere

Journal Article

Environmental and Dynamic Conditions for the Occurrence of Persistent Haze Events in North China

Yihui Ding,Ping Wu,Yanju Liu,Yafang Song

Journal Article

Influence of Human Activities on Wintertime Haze-Related Meteorological Conditions over the Jing–Jin–Ji

Ying Xu, Yanju Liu, Zhenyu Han, Botao Zhou, Yihui Ding, Jie Wu, Tongfei Tian, Rouke Li, Jing Wang

Journal Article

How aerosol direct effects influence the source contributions to PM

Litao Wang, Joshua S. Fu, Wei Wei, Zhe Wei, Chenchen Meng, Simeng Ma, Jiandong Wang

Journal Article