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    Author(s): Yuesi Wang; Jinyuan Xin; Zhanqing Li; Shigong Wang; Pucai Wang; Wei Min HaoBryce L. Nordgren; Hongbin Chen; Lili Wang; Yang Sun
    Date: 2012
    Source: Journal of Geophysical Research. 116: D18209.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (1.33 MB)

    Description

    Seasonal variations in background aerosol optical depth (AOD) and aerosol type are investigated over various ecosystems in China based upon three years' worth of meteorological data and data collected by the Chinese Sun Hazemeter Network. In most parts of China, AODs are at a maximum in spring or summer and at a minimum in autumn or winter. Minimum values (0.10~0.20) of annual mean AOD at 500 nm are found in the Qinghai-Tibetan Plateau, the remote northeast corner of China, the northern forest ecosystems and Hainan Island. Annual mean AOD ranges from 0.25 to 0.30 over desert and oasis areas, as well as the desertification grasslands in northern China; the annual mean AOD over the Loess Plateau is moderately high at 0.36. Regions where the highest density of agricultural and industrial activities are located and where anthropogenic sulphate aerosol and soil aerosol emissions are consistently high throughout the whole year (e.g., the central-eastern, southern and eastern coastal regions of China) experience annual mean AODs ranging from 0.50~0.80.

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    Citation

    Wang, Yuesi; Xin, Jinyuan; Li, Zhanqing; Wang, Shigong; Wang, Pucai; Hao, Wei Min; Nordgren, Bryce L.; Chen, Hongbin; Wang, Lili; Sun, Yang. 2012. Seasonal variations in aerosol optical properties over China. Journal of Geophysical Research. 116: D18209.

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    Keywords

    Angstrom exponent, Chinese Sun Hazemeter Network, aerosol optical depth (AOD), seasonal variation

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