天赤道的瞬时平均位置，它的变化只包括岁差的影响。
近40年赤道太平洋和北太平洋月平均海温距平场分布存在着短期气候振动，分析表明，它对大气环流有一定的影响。
Distributions of monthly sea surface temperature (SST) anomaly field over the equatorial Pacific and the northern Pacific have short-term climatic oscillations in the past 40 years.
在赤道中东太平洋海温与北太平洋西风漂流区海温处于明显正距平阶段 ，华北平原地区易分别发生严重干旱与雨涝。
During SST raise stage in the equatorial central and eastern Pacific and North Pacific westerly drift region, serious droughts and floods easily happen in the North China Plane, respectively.
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