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    Do aerosols impact ground observation of total cloud cover over the North China Plain? (English)

    In: Global and Planetary Change ; 117 ; 91-95  ; 2014
    • ISSN:
      0921-8181
    • Article (Journal)  /  Electronic Resource

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    Abstract Ground observation of the total cloud cover (TCC) showed a significant downward trend during the past half century over the North China Plain (NCP). The objective of this paper is to examine whether aerosols have impacted the surface observations of TCC by human observers. TCC observations by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua (TCCsat) were firstly compared with ground observations (TCCgrd) at 201 synoptic stations over the NCP. Results showed that both data sets were in good agreement. The correlation coefficient between TCCgrd and TCCsat ranged from 0.80 in winter to 0.90 in summer. The relationship between TCCsat–TCCgrd and visibility was then analyzed, which showed no significant correlation. Finally, long-term trends of TCCgrd and visibility were not correlated. These results indicated that aerosols likely did not impact the long-term trend of TCCgrd over the NCP.

    Highlights Ground and satellite cloud data are highly correlated in North China Plain. Ground observation of clouds is not likely impacted by aerosol obscuring effect.

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