Diurnal variations in sea surface temperature and precipitable water observed over the tropical Ocean

研究了大尺度运动与湿度变化之间的关系。结果表明，水汽变化具有明显的3-4 d周期，且3-4 d周期的变化受海温显著的日变化周期的强烈调节。在马登-朱利安涛动（MJO）的发展阶段观测到3-4 d的周期变化，可能在MJO的发展中起重要作用。

The relationships between large-scale motion and moisture variations are investigated. The results indicate that moisture variations show a prominent 3-4-day period, ant the 3-4-day-period variations are strongly modulated by the significant diurnal cycle of sea surface temperature. The 3-4-day period variations are observed during the developing phase of Madden-Julian oscillation (MJO) and might play a significant role in the MJO development.