中文摘要：

有研究认为局地气象异常与地震之间存在着一定的相关性，那么震惊中外的汶川大地震前后有没有气象异常呢？应用NCEP再分析资料，以1988—2007年20年间局地气象要素的平均值和标准偏差为基准，通过构建气象异常指数对2008年5月12日汶川发生的大地震前后的日平均气温、日最高气温、日最低气温、日平均降水强度和日平均气压等5项气象要素指标的异常状况进行了分析，结果表明在地震前2个月的时间内有异常状况出现，并且其变化幅度和持续时间都比较长，在地震过后这些异常并未立即消失；从5项气象要素异常空间分异来看，汶川是气象异常的中心地带，表征了汶川地震与局地气象之间存在着一定的相关性。尽管气象异常是否是地震发生的必然前兆尚待进一步考证，但出现在汶川特大地震前后的气象异常再次给我们一个提示，即气象异常与地震的关系值得深入研究。

英文摘要：

Some researchers have discussed the correlations between meteorological anomalies and earthquakes, but a question remains about wheather such correlations exist for the Wenchuan Earthquake. This paper thus utilizes the NCEP Reanalysis Data to study the issue. The study is based on the five meteorological indices, i.e. the daily average temperature, daily maximum temperature, daily minimum temperature, daily average precipitation rate, and daily average pressure. Such indices of 2008 are compared to their respective long-term means and standard deviations to identify anomalies near the strong earthquake in May 12, 2008. The results show that meteorological anomalies before the earthquake do exist, and centers of the distributions of the anomalies are around Wenchuan. The anomalies persisted for some time after the earthquake, and the anomalies are overall relatively long lasting and strong. The meteorological anomalies that occurred prior to the earthquake could be the earthquake indicators, but given the complexity of an earthquake more thorough investigations are needed to actually use such anomalies to predict earthquakes. Nevertheliss, the meteorological anomalies indeed give us some clues to the earthquake, suggesting the relationships between the local meteorological anomalies and a strong earthquake are worth to be studied.