| 四川盆地秋季气溶胶与云的相关分析 |
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| 引用本文： | 吴蓬萍,周长春.四川盆地秋季气溶胶与云的相关分析[J].高原山地气象研究,2016,36(2):59-63. |
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| 作者姓名： | 吴蓬萍 周长春 |
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| 作者单位： | 1. 中国气象局成都高原气象研究所, 成都 610072; |
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| 基金项目： | 国家自然科学基金41405142，川气课题2013-预研-01，中国气象局成都高原气象研究所科研费专项经费项目(BROP201615) |
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| 摘 要： | 通过对再分析资料总气溶胶光学厚度(total aerosol optical depth,AOD)和低云云量(low cloud cover,LCC)的分析,结果表明:四川盆地秋季气溶胶与云的分布和变化主要是以全区域的一致变化,和以成都、重庆为中心的双支结构为主。气溶胶分布为双支结构时的变化更容易引起云量变化,持续时间不超过两天;气溶胶对云的影响还与二者的分布时间有关,二者高值出现的时间相近(10月),气溶胶会使高云量增加,反之使低云量增加高云量减少(9月)。
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| 关 键 词： | 四川盆地 秋季 AOD 低云 BPCCA |
| 收稿时间： | 2016-05-11 |
Analysis of Correlation between Aerosol and Cloud in the Sichuan Basin in Autumn |
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| Affiliation: | 1. Chengdu Institute of Plateau Meteorology, CMA, Chengdu 610072, China;2. Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610072, China;3. Sichuan Meteorological Observatory, Chengdu 610072, China |
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| Abstract: | The re-analysis assimilates data,including total aerosol optical depth(AOD) and low cloud cover(LCC)were used to estimate the correlations between aerosol and LCC and LSP in autumn in the Sichuan Basin(SB). Two variables distributed as a same sign of spatial patterns. Another distribution like the two-branches centering around Chengdu and Chongqing respectively with opposite sign of variability. There was a strong link between AOD and LCC when AOD distributed as its EOF2 and EOF3. The effect of AOD's change on LCC lasted only two days. The date of variabilities distribution was an important factor of impact of AOD on LCC: if the high value of AOD and LCC appeared at the same time(October),high LCC would increase; otherwise(September),the low LCC would increase and high LCC decreased. |
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