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大气科学  2007 

青藏高原臭氧低值中心的变化与我国气候的关系

DOI: 10.3878/j.issn.1006-9895.2007.03.11

Keywords: 青藏高原,臭氧低值中心,气候效应

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Abstract:

利用NCEP/NCAR再分析资料、GPCP降水资料以及我国160个台站的降水资料,研究了青藏高原臭氧低值中心偏强年和偏弱年的气候差异。结果表明,5~7月平均的青藏高原臭氧总量变化与我国当年夏季、冬季以及第二年春季的气温和降水等有明显的相关关系:在臭氧低值中心偏强年夏季,中国绝大部分地区地面气温比多年平均偏高,长江以南地区降水偏多,长江以北大部分地区降水偏少,尤其是长江中下游和黄河中下游之间的地面降水偏少特别明显。在臭氧低值中心偏强年冬季和次年春季,中国大部分地区冬季风比多年平均弱,使得绝大部分地区地面气温偏高。臭氧低值中心偏弱年的情况基本上与偏强年相反。因此,青藏高原上空臭氧低值中心的变化在气候预测中是一个值得重视的因子。

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