Journal of Atmospheric and Environmental Optics, Volume. 8, Issue 4, 241(2013)

Impacts of Agricultural Fire on Aerosol Distribution over East China During Summer Harvest Time

Yuan-jian YANG1,2,3, Yun-fei FU1,2,3、*, Bi-wen WU3, Chun-e SHI3, Xue-Liang DENG3, Hao ZHANG3, and Ying ZHANG2
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  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    The Moderate Resolution Imaging Spectroradiometer (MODIS) level 2 aerosol products (2001~2009) were used to study aerosol spatial and temporal distributions in June, as well as their variations with surface wind over East China. The results of case and statistical studies indicate that fire pixels almost dominate the whole northern Anhui and Jiangsu Provinces (32°N~35°N) in June. It is found that fire pixel count is quite large in June and clearly matches the high aerosol optical depth(AOD) loads during the burning month. These suggest that agricultural biomass burning occurs seriously in June, which leads to appearance of AOD peak values over East China. Moreover, the distribution feature of aerosol over East China has been proved mainly depending on topography and anthropogenic activities. The variabilities of visibility, days of haze and AOD in Anhui Province demonstrated that the agricultural biomass burning aerosols can also be transported into East China from the surrounding rural area in June. The spatial-temporal variabilities of AOD in June over East China are closely related to those of surface wind. On one hand, strong wind is favor for the diffusion of the pollutants, which leads to the relatively lower AOD loads. On the other hand, still wind process by which formation of airflow stagnation area can induce that the pollutants accumulate much easily, which leads to the relatively higher AOD loads.

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    YANG Yuan-jian, FU Yun-fei, WU Bi-wen, SHI Chun-e, DENG Xue-Liang, ZHANG Hao, ZHANG Ying. Impacts of Agricultural Fire on Aerosol Distribution over East China During Summer Harvest Time[J]. Journal of Atmospheric and Environmental Optics, 2013, 8(4): 241

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    Paper Information

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    Received: Apr. 12, 2013

    Accepted: --

    Published Online: Aug. 1, 2013

    The Author Email: Yun-fei FU (fyf@ustc.edu.cn)

    DOI:10.3969/j.issn.1673-6141.2013.04.001

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