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用EOF和CCA方法研究了印度洋海表温度距平场与中国汛期降水场的遥相关分布特征,结果表明:印度洋SSTA场与中国汛期降水场相关明显,海温场异常分布对中国汛期南北经向雨带的变化及中国西北、西南和长江黄河下游地区汛期旱涝的影响明显,揭示了中国汛期旱涝异常分布的印度洋海温变化的强信号现象,说明特定的印度洋海温分布可以作为中国汛期旱涝预报的强信号因子。
EOF and CCA methods were used to study the teleconnectional distribution of the Indian Ocean temperature anomaly field and the precipitation in China during the flood season. The results show that there is a significant correlation between the SSTA field in the Indian Ocean and the precipitation in the flood season in China. The change of rainbands and the impact of drought and flood in the flood season in the northwest, southwest and the lower reaches of the Yellow River in the Yangtze River in China clearly revealed the strong signal phenomenon of the Indian Ocean SST in anomalous distribution of drought and flood in China, indicating that the specific Indian Ocean SST can be used as the flood season in China Strong signal factor for drought and flood forecast.