The Periodicity of Volcano Activity and Its Reflection in Some Climate Factors

Abstract

AbstractBased on the data of 600 years global above class 5 volcanic explosion index (VEI) and the comparison of the northern hemispheric ground temperature, the western pacific high, the northern Atlantic high and the sea surface temperature anomaly (SSTA) in the northern Atlantic westerly region, it is showed that: (1) The global strong volcano activities have obvious century timescale cycles about 88 and 100 years, accounting for about 21.65% of total variance for VEI, an about 33‐year interdecadal timescale cycle, and an 11‐year cycle associated with solar activity. (2) The western Pacific subtropical high in July has a 33‐year period oscillation accordant to the volcanic activity, which is considered to be the response to the 33‐year periodic volcanic activity. (3) In the North Atlantic, the volcanic activities inspire the summer North Atlantic sub‐tropical high with 88‐year cycle oscillation, winter (January) northern Atlantic westerly region SSTA with 100‐year oscillation and summer (July) SSTA 88‐year cycle oscillation. (4) Analysis shows that the 88‐year periodic variation of northern hemispheric ground temperature is the response to the 88‐year cycle of volcanic activity.