摘要
讨论了2500多年来太阳黑子周期长度(SCL)的跃变特征,发现在百年尺度上SCL基本在平均值附近变化,而其变率则存在明显的跃变现象,当SCL的变率增大时,气候随之发生冷跃变,反之,则发生暖跃变。小冰期时,太阳活动弱且不稳定,与地球气候冷且不稳定具有同时性。
In this paper, the jump transition characteristic of sunspot cycle length(henceforth SCL) from 522BC upward were analyzed. Moving t-test method based results indicate that there were no appreciable change of SCL in recent 2500 years. However, the variances of SCL series (henceforth S v) show apparent jump transitions in 260BC, 31AD, 271AD, 1172AD and 1844AD, respectively. When S v jump from low to high level, the “cold” climatic jumps were occurred, and vice versa. Moreover, the highest level of S v coincide with the frequently occurrence of natural disaster in the Little Ice Age, which indicates that the instability of climate was caused by the unstable SCL (solar activity).
出处
《高原气象》
CSCD
北大核心
1998年第3期266-270,共5页
Plateau Meteorology
基金
国家攀登计划