supported by the National Natural Science Foundation of China(NNSFC)(Grant Nos.10273018,10133010,19833030 and 19973011);Science and Technology Development Fund of Shanghai(Grant No.JC14012).
Using the length-of-day (LOD) data series de-rived from astronomical observations made by various mod-ern space techniques, southern oscillation index (SOI) and anomalies of sea surface temperature (SST) in tropical P...