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| Titel |
Do aerosols impact ground observation of total cloud cover over the North China Plain? |
| VerfasserIn |
Li Sun, Xiangao Xia, Pucai Wang, Ye Fei |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250103673
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| Publikation (Nr.) |
 EGU/EGU2015-3089.pdf |
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| Zusammenfassung |
| 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 (TCCgrd) were firstly compared with ground observations
(TCCsat) at 201 synoptic stations over the NCP. Results showed that both data
sets were in good agreement. The correlation coefficient between TCCgrd and
TCCsatranged from 0.80 in winter to 0.90 in summer. The relationship between
TCCsat - TCCgrdand 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 TCCgrdover the
NCP. |
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