Temporal variation of dust aerosol pollution in northern China

2020 ◽  
Vol 13 (3) ◽  
Author(s):  
Xunming Wang ◽  
Ting Hua ◽  
Huizheng Che
Keyword(s):  
Temporal Variation ◽  
Northern China ◽  
Dust Aerosol ◽  
Aerosol Pollution

scholarly journals Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Hui Sun ◽  
Xiaodong Liu
Keyword(s):  
East Asian Winter Monsoon ◽  
East Asian ◽  
Northern China ◽  
Winter Monsoon ◽  
Dust Aerosol ◽  
Central China ◽  
The Tibetan Plateau ◽  
Asian Winter Monsoon ◽  
Radiation Change ◽  
Cooling Effects

Variations of the East Asian winter monsoon (EAWM) induced by dust aerosol are studied by using a regional climate model (RegCM4/Dust). Dust coupled and uncoupled experiments are carried out for the past decade (2000–2009). The coupled RegCM4 captures three centers of dust mixing ratio (DMR) located in the Taklamakan Desert, western Inner Mongolia, and northern Xinjiang, respectively, with maximum values greater than 500 µg kg−1in winter. The surface total radiation change induced by dust is negative, and its central value of −8 W m−2results in surface temperature cooling by 1.5°C in winter. Dust induced radiation change at the top of the atmosphere (TOA) is also negative in Northern China, except over the Tibetan Plateau (TP), and up to −5 W m−2in Central China. Dust cooling effects increase the sea level pressure (SLP) gradient between land and ocean, the cold surge frequency, and the East Asian jet stream (EAJ) intensity and then enhance the EAWM. The dry and cold wind pervade most areas of East Asia, suppressing large-scale precipitation and eventually leading to a rainfall decrease of about 10–30% in Northern China and the middle Yangtze River Valley.

Temporal variation of the wind environment and its possible causes in the Mu Us Dunefield of Northern China, 1960–2014

2018 ◽  
Vol 135 (3-4) ◽  
pp. 1017-1029 ◽  
Author(s):  
Xujia Cui ◽  
Hu Sun ◽  
Zhibao Dong ◽  
Zhengyao Liu ◽  
Chao Li ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Northern China ◽  
Wind Environment

scholarly journals Spatio-Temporal Variation in Vegetation Biomass and Its Relationships with Climate Factors in the Xilingol Grasslands, Northern China

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e83824 ◽  
Author(s):  
Tian Gao ◽  
Xiuchun Yang ◽  
Yunxiang Jin ◽  
Hailong Ma ◽  
Jinya Li ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Northern China ◽  
Climate Factors ◽  
Vegetation Biomass ◽  
Spatio Temporal

scholarly journals Nine-year spatial and temporal evolution of desert dust aerosols over South and East Asia as revealed by CALIOP

2018 ◽  
Vol 18 (2) ◽  
pp. 1337-1362 ◽  
Author(s):  
Emmanouil Proestakis ◽  
Vassilis Amiridis ◽  
Eleni Marinou ◽  
Aristeidis K. Georgoulias ◽  
Stavros Solomos ◽  
...  
Keyword(s):  
East Asia ◽  
Aerosol Optical Depth ◽  
Optical Depth ◽  
Indian Subcontinent ◽  
Northern China ◽  
Dust Aerosol ◽  
Observation Data ◽  
Transport Pathways ◽  
Desert Dust ◽  
Dust Aerosols

Abstract. We present a 3-D climatology of the desert dust distribution over South and East Asia derived using CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation) data. To distinguish desert dust from total aerosol load we apply a methodology developed in the framework of EARLINET (European Aerosol Research Lidar Network). The method involves the use of the particle linear depolarization ratio and updated lidar ratio values suitable for Asian dust, applied to multiyear CALIPSO observations (January 2007–December 2015). The resulting dust product provides information on the horizontal and vertical distribution of dust aerosols over South and East Asia along with the seasonal transition of dust transport pathways. Persistent high D_AOD (dust aerosol optical depth) values at 532 nm, of the order of 0.6, are present over the arid and semi-arid desert regions. Dust aerosol transport (range, height and intensity) is subject to high seasonality, with the highest values observed during spring for northern China (Taklimakan and Gobi deserts) and during summer over the Indian subcontinent (Thar Desert). Additionally, we decompose the CALIPSO AOD (aerosol optical depth) into dust and non-dust aerosol components to reveal the non-dust AOD over the highly industrialized and densely populated regions of South and East Asia, where the non-dust aerosols yield AOD values of the order of 0.5. Furthermore, the CALIPSO-based short-term AOD and D_AOD time series and trends between January 2007 and December 2015 are calculated over South and East Asia and over selected subregions. Positive trends are observed over northwest and east China and the Indian subcontinent, whereas over southeast China trends are mostly negative. The calculated AOD trends agree well with the trends derived from Aqua MODIS (Moderate Resolution Imaging Spectroradiometer), although significant differences are observed over specific regions.

scholarly journals Air Quality in East Asia during the heavy haze event period of 10 to 15 January 2013

2021 ◽  
Vol 15 ◽  
pp. 1-9
Author(s):  
Soon-Ung Park ◽  
Jeong Hoon Cho
Keyword(s):  
Eastern China ◽  
Northern China ◽  
Asian Dust ◽  
Dust Aerosol ◽  
Anthropogenic Aerosols ◽  
The Public ◽  
Inorganic Aerosols ◽  
Source Regions ◽  
Haze Event ◽  
Aerosol Modeling

A prolonged heavy haze event that has caused for the Environmental Protection Bureau (EPB) in Beijing to take emergency measures for the protection of the public health and the reduction of air pollution damages in China has been analyzed with the use of the Aerosol modeling System (AMS) to identify causes of this event. It is found that the heavy haze event is associated with high aerosols and water droplets concentrations. These high aerosol concentrations are mainly composed of anthropogenic aerosols, especially secondary inorganic aerosols formed by gas-to-particle conversion of gaseous pollutants in the eastern part of China whereas those in the northeastern parts of China are composed of the mixture of the anthropogenic aerosols and the Asian dust aerosol originated from the dust source regions of northern China and Mongolia. These high aerosol concentrations are found to be subsequently transported to the downwind regions of the Korean Peninsula and Japan causing a prolonged haze event there. It is also found that the Asian dust aerosol originated from northern China and Mongolia and the anthropogenic aerosols produced by chemical reactions of pollutants in the high emissions region of eastern China can cause significantly adverse environmental impacts in the whole Asian region by increased atmospheric aerosol loadings that may cause respiration diseases and visibility reduction and by excess deposition of aerosols causing adverse impacts on terrestrial and marine eco-systems.

Spatial and temporal variation of the near-surface wind environment in the dune fields of northern China

2017 ◽  
Vol 38 (5) ◽  
pp. 2333-2351 ◽  
Author(s):  
Xujia Cui ◽  
Zhibao Dong ◽  
Hu Sun ◽  
Chao Li ◽  
Fengjun Xiao ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Surface Wind ◽  
Northern China ◽  
Spatial And Temporal Variation ◽  
Wind Environment ◽  
Near Surface

A-Train satellite measurements of dust aerosol distributions over northern China

2013 ◽  
Vol 122 ◽  
pp. 170-179 ◽  
Author(s):  
Hongbin Wang ◽  
Lei Zhang ◽  
Xianjie Cao ◽  
Zhiwei Zhang ◽  
Jiening Liang
Keyword(s):  
Northern China ◽  
Dust Aerosol ◽  
Satellite Measurements
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