Please wait a minute...
Journal of Arid Land  2018, Vol. 10 Issue (5): 686-700    DOI: 10.1007/s40333-018-0096-9
Orginal Article     
Characteristics of air pollution events over Hotan Prefecture at the southwestern edge of Taklimakan Desert, China
Jingxin LI1, Shigong WANG2,3,*(), Jinhua CHU3,4, Jiaxin WANG2, Xu LI3, Man YUE3, Kezheng SHANG3
1 State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China
2Sichuan Key Laboratory of Plateau Atmosphere and Environment, College of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
3Gansu Key Laboratory of Arid Climate Change and Reducing Disaster, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
4Chongqing Meteorological Bureau, Chongqing 401147, China
Download: HTML     PDF(1324KB)
Export: BibTeX | EndNote (RIS)      

Abstract  

Hotan Prefecture is located at the southwestern edge of Taklimakan Desert,the world's largest shifting sand desert, of China. The desert is one of the main sources for frequent sand-dust weather events whichstrongly affectthe air quality of Hotan Prefecture.Although this region is characterized by the highest annual mean PM10 concentration values that are routinely recorded by environmental monitoring stations across China, both this phenomenon and its underlying causes have not been adequately addressed in previous researches. Reliable pollutant PM10 data are currently retrieved using a tapered element oscillating microbalance (TEOM) 1400a, a direct real-time monitor, while additional concentration values including for PM2.5, sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO) and ozone (O3) have been collected in recent years by the Hotan Environmental Monitoring Station. Based on these data, this paper presents a comparison of the influences of different kinds of sand-dust weather events on PM10 (or PM2.5) as well as the concentrations of other gaseous pollutants in Hotan Prefecture. It is revealed that the highest monthly average PM10 concentrations are observed in the spring because of the frequent occurrence of three distinct kinds of sand-dust weather events at this time, including dust storms, blowing dust and floating dust. The floating dust makes the most significant contribution to PM10 (or PM2.5)concentration in this region, a result that differs from eastern Chinese cities where the heaviest PM10 pollution occurs usually in winter and air pollution results from the excess emission of local anthropogenic pollutants. It is also shown that PM10 concentration varies within typical dust storms. PM10 concentrations vary among 20 dust storm events within Hotan Prefecture, and the hourly mean concentrations tend to sharply increase initially then slowly decreasing over time. Data collected from cities in eastern China show the opposite with the hourly mean PM10 (or PM2.5)concentration tending to slowly increase then sharply decrease during heavy air pollution due to the excess emission of local anthropogenic pollutants. It is also found that the concentration of gaseous pollutants during sand-dust weather events tends to be lower than those cases under clear sky conditions. This indicates that these dust events effectively remove and rapidly diffuse gaseous pollutants. The analysis also shows that the concentration of SO2 decreases gradually at the onset of all three kinds of sand-dust weather events because of rapidly increasing wind velocity and the development of favorable atmospheric conditions for diffusion. In contrast, changes in O3 and NO2 concentrations conformed to the opposite pattern during all three kinds of sand-dust weather events within this region, implying the inter transformation of these gas species during these events.



Key wordsPM10 (or PM2.5)concentration      sand-dust weather events      gaseous pollutants      air pollution      Taklimakan Desert     
Received: 20 October 2017      Published: 10 October 2018
Corresponding Authors: Shigong WANG     E-mail: wangsg@cuit.edu.cn
Cite this article:

Jingxin LI, Shigong WANG, Jinhua CHU, Jiaxin WANG, Xu LI, Man YUE, Kezheng SHANG. Characteristics of air pollution events over Hotan Prefecture at the southwestern edge of Taklimakan Desert, China. Journal of Arid Land, 2018, 10(5): 686-700.

URL:

http://jal.xjegi.com/10.1007/s40333-018-0096-9     OR     http://jal.xjegi.com/Y2018/V10/I5/686

[1] Astitha M, Lelieveld J, Abdel Kader M, et al.2012. Parameterization of dust emissions in the global atmospheric chemistry-climate model EMAC: impact of nudging and soil properties. Atmospheric Chemistry and Physics, 12(22):11057-11083.
[2] Baltaci H.2017. Spatial and temporal variation of the extreme Saharan dust event over Turkey in March 2016. Atmosphere, 8(2): 16.
[3] Chen S Y, Huang J P, Li J X, et al.2017. Comparison of dust emissions, transport, and deposition between the Taklimakan Desert and Gobi Desert from 2007 to 2011. Science China Earth Sciences, 60(7): 1338-1355.
[4] Cheng N, Chen T, Zhang D, et al.2015. Air quality characteristics in Beijing during Spring Festival in 2015. Environmental Science, 36(9): 3150-3158.
[5] China Meteorological Administration.1979. China Meteorological Administration criterion of surface meteorological observation. Beijing: Meteorological Press, 21-27. (in Chinese)
[6] Dickhut R M, Canuel E A, Gustafson K E, et al.2000. Automotive sources of carcinogenic polycyclic aromatic hydrocarbons associated with particulate matter in the Chesapeake Bay region. Environmental Science and Technology, 34(21): 4635-4640.
[7] Feng X Y, Wang S G, Cheng Y F, et al.2010. Climatic characteristics of dust storms in the middle and west of northern China. Journal of Desert Research, 30(2): 394-399. (in Chinese)
[8] Feng X Y, Wang S G, Yang D B, et al.2011. Influence of dust events on PM10 pollution in key environmental protection cities of northern China during recent years. Journal of Desert Research, 31(3): 735-740. (in Chinese)
[9] Gao W D, Jiang W.2002. The form and hazard of sand-dust storm in Western and Southern of Taklimakan Desert. Journal of Arid Land Resources and Environment, 16(3): 64-70. (in Chinese)
[10] Guan QY, Yang J, Zhao SL, et al.2014. Climatological analysis of dust storms in the area surrounding the Tengger Desert during 1960-2007. Climate Dynamis, 45(3-4): 903-913.
[11] Guan Q, Sun X, Yang J, et al.2017. Dust storms in northern China: Long-term spatiotemporal characteristics and climate controls. Journal of Climate, 30(17): 6683-6700.
[12] Khuzestani R B, Schauer J J, Wei Y, et al.2017. Quantification of the sources of long-range transport of PM2.5 pollution in the Ordos region, Inner Mongolia, China. Environmental Pollution, 229: 1019-1031.
[13] Liu K L, Chen T Z, Feng Z, et al.2008. The application of PM10 in the dust events observation classification. Inner Mongolia Meteorology, 5: 8-9. (in Chinese)
[14] Park S U, Cho J H, Park M S.2013. Analyses of high aerosol concentration events (dense haze/mist) occurred in East Asia during 10-16 January 2013 using the data simulated by the Aerosol Modeling System. International Journal of Chemistry, 03: 10-26.
[15] Pederzolia A, Mirceaa M, Finardib S, et al.2010. Quantification of Saharan dust contribution to PM10 concentrations over Italy during 2003-2005. Atmospheric Environment, 44(34): 4181-4190.
[16] Prospero JM, Collard FX, Molinié J, et al.2014. Characterizing the annual cycle of African dust transport to the Caribbean Basin and South America and its impact on the environment and air quality. Global Biogeochemical Cycles, 29(7):757-773.
[17] Qian Z A, Cai Y, Liu J T, et al.2004. Some advances in dust storm researches in northern China. Journal of Arid Land Researches and Environment, 18: 1-8. (in Chinese)
[18] Rodr?guez S, Querol X, Alastuey A, et al.2001. Saharan dust contributions to PM10 and TSP levels in Southern and Eastern Spain. Atmospheric Environment, 35(14): 2433-2447.
[19] Spyrou C, Kallos G, Mitsakou C, et al.2013. Modeling the radiative effects of desert dust on weather and regional climate. Atmospheric Chemistry and Physics, 13:5489-5504.
[20] Wan BT, Kang X F, Zhang J H, et al.2004. Research on classification of dust and sand storm basic on particular concentration. Environmental Monitoring in China, 20(3): 8-11. (in Chinese)
[21] Wang S G, Yang M, Qi B, et al.1999. Influence of sand-dust storms occurring over the Gansu Hexi district on the air pollution in Lanzhou City. Journal of Desert Research, 19(4): 354-358. (in Chinese)
[22] Wang S G, Wang J Y, Zhou Z J, et al.2005. Regional characteristics of three kinds of dust storm events in China. Atmospheric Environment, 39(3): 509-520.
[23] Wang S G, Yuan W, Shang K Z.2006. The impacts of different kinds of dust events on PM10 pollution in Northern China. Atmospheric Environment, 40(40): 7975-7982.
[24] Wang H, Jia X.2013. Field observations of windblown sand and dust in the Taklimakan Desert, NW China, and insights into modern dust sources. Land Degradation & Development, 24(4): 323-333.
[25] Wang H, Lei Y, Chen X, et al.2015. Technology distribution and air pollutant emissions from coal-fired boilers for industrial and residential use in Beijing-Tianjin-Hebei area. Research of Environmental Sciences, 28(10): 1510-1517.
[26] Xiao F, Zhou C, Liao Y.2008. Dust storms evolution in Taklimakan Desert and its correlation with climatic parameters. Journal of Geographical Sciences, 18(4): 415-424.
[27] Xing J, Wang J, Mathur R, et al.2017. Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates. Atmospheric Chemistry and Physics, 17(16): 9869-9883.
[28] Yang X, Shen S, Yang F, et al.2016. Spatial and temporal variations of blowing dust events in the Taklimakan Desert. Theoretical and Applied Climatology, 125(3-4): 669-677.
[29] Zhang X X, Sharratt B, Chen X, et al.2017. Dust deposition and ambient PM10 concentration in northwest China: spatial and temporal variability. Atmospheric Chemistry and Physics, 17: 1699-1711.
[30] Zhao X J, Zhao P S, Xu J, et al.2013. Analysis of a winter regional haze event and its formation mechanism in the North China Plain. Atmospheric Chemistry and Physics, 13(11): 5685-5696.
[31] Zhuang G, Guo J, Yuan H, et al.2001. The compositions, sources, and size distribution of the dust storm from China in spring of 2000 and its impact on the global environment. Chinese Science Bulletin, 46(11): 895-900.
[32] Zu R P, Zhang K C, Qu J J.2005. The intensity of sand-drift activities in Taklimakan Desert. Geographical Research, 24(5): 690-707. (in Chinese)
[1] LI Congjuan, WANG Yongdong, LEI Jiaqiang, XU Xinwen, WANG Shijie, FAN Jinglong, LI Shengyu. Damage by wind-blown sand and its control measures along the Taklimakan Desert Highway in China[J]. Journal of Arid Land, 2021, 13(1): 98-106.
[2] DONG Zhengwu, LI Shengyu, ZHAO Ying, LEI Jiaqiang, WANG Yongdong, LI Congjuan. Stable oxygen-hydrogen isotopes reveal water use strategies of Tamarix taklamakanensis in the Taklimakan Desert, China[J]. Journal of Arid Land, 2020, 12(1): 115-129.
[3] WANG Cui, LI Shengyu, LEI Jiaqiang, LI Zhinong, CHEN Jie. Effect of the W-beam central guardrails on wind-blown sand deposition on desert expressways in sandy regions[J]. Journal of Arid Land, 2020, 12(1): 154-165.
[4] Minzhong WANG, Hu MING, Wen HUO, Hongxiong XU, Jiangang LI, Xingcai LI. Detecting sand-dust storms using a wind-profiling radar[J]. Journal of Arid Land, 2017, 9(5): 753-762.
[5] Fan YANG, Mamtimin ALI, Xinqian ZHENG, Qing HE, Xinghua YANG, Wen HUO, Fengchao LIANG, Shaoming WANG. Diurnal dynamics of soil respiration and the influencing factors for three land-cover types in the hinterland of the Taklimakan Desert, China[J]. Journal of Arid Land, 2017, 9(4): 568-579.
[6] WANG Minzhong, WEI Wenshou, HE Qing, YANG Yuhui, FAN Lei, ZHANG Jiantao. Summer atmospheric boundary layer structure in the hinterland of Taklimakan Desert, China[J]. Journal of Arid Land, 2016, 8(6): 846-860.
[7] JIA Wenru, ZHANG Chunlai, LI Shengyu, WANG Haifeng, MA Xuexi, WANG Ningbo. Grain size distribution at four developmental stages of crescent dunes in the hinterland of the Taklimakan Desert, China[J]. Journal of Arid Land, 2016, 8(5): 722-733.
[8] XUE Jie, LEI Jiaqiang, LI Shengyu, GUI Dongwei, MAO Donglei, ZHOU Jie. Re-evaluating the vertical mass-flux profiles of aeolian sediment at the southern fringe of the Taklimakan Desert, China[J]. Journal of Arid Land, 2015, 7(6): 765-777.
[9] CHENG Hong, HE Jiajia, XU Xingri, ZOU Xueyong, WU Yongqiu, LIU Chenchen, DONG Yifan, PAN Meihui, WANG Yanzai, ZHANG Hongyan. Blown sand motion within the sand-control system in the southern section of the Taklimakan Desert Highway[J]. Journal of Arid Land, 2015, 7(5): 599-611.
[10] XingHua YANG, Qing HE, Mamtimin ALI, Wen HUO XinChun LIU. Near-surface sand-dust horizontal flux in Tazhong—the hinterland of the Taklimakan Desert[J]. Journal of Arid Land, 2013, 5(2): 199-206.
[11] XingHua YANG, Ali MAMTIMIN, Qing HE, XinChun LIU, Wen HUO. Observation of saltation activity at Tazhong area in Taklimakan Desert, China[J]. Journal of Arid Land, 2013, 5(1): 32-41.
[12] MinZhong WANG, WenShou WEI, Qing HE, XinChun LIU, ZhongJie ZHAO. Application of wind profiler data to rainfall analyses in Tazhong Oilfield region, Xinjiang, China[J]. Journal of Arid Land, 2012, 4(4): 369-377.
[13] Li LI, XinWen XU, YongQiang SU, Wei HAN, PengFei TU. Effects of parasitic plant Cistanche deserticola on chlorophyll a fluorescence and nutrient accumulation of host plant Haloxylon ammodendron in the Taklimakan Desert[J]. Journal of Arid Land, 2012, 4(3): 342-348.
[14] XingHua YANG, XiaoLiang XU, Qing HE, Ali Mamtimin, Bo YU, ShiHao TANG. Sand flux estimation during a sand-dust storm at Tazhong area of Taklimakan Desert, China[J]. Journal of Arid Land, 2011, 3(3): 199-205.
[15] Qing HE, XingHua YANG, Ali Mamtimin, ShiHao TANG. Impact factors of soil wind erosion in the center of Taklimakan Desert[J]. Journal of Arid Land, 2011, 3(1): 9-14.