Abstract: Climatic anomalies ocurring during recent years have showed their outstanding peculiarities at low latitudes, the persistent Sahel droughts and frequent occurrences of El-Nino events at east equatorial Pacific are the most notable features of them. By analyzing, it is found that these variations are closely related with the decreasing trend of direct solar radiation of N.H since 1960s, this trend is mainly caused both by the acceleration of volcanic eruptions and the successive increase of anthropogenic aerosols during recent years. The lowering of heating amounts on continents of N.H during summer half year certainly will influence the developing process of summer monsoon. This has expressed through southerly shifting of Northern subtropical-tropical atmospheric systems.Both Sahel persistent droughts and more E1-Niño years were thus caused by the southerly shifting ITCZ at west Africa and equatorial east Pacific separately since 1960s. The deficiency of summer rainfall of North China having succeeded for recent 2 decades is also related with the southerly displacement of west Pacific high. Finnally, present report further outlooks that such trend of climatic anomalies tend to persist in the next few decades.