arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1504.01611astro-ph.EP
收藏

审慎估计行星、太阳和气候振荡之间的相干性

Prudence in estimating coherence between planetary, solar and climate oscillations

Sverre Holm

摘要:

有观点认为,太阳系的质心运动速度与全球温度异常之间存在相关性。这部分基于数据分析,部分基于先验预期。幅度平方相干函数是检验这种说法的适当措施。在这些数据集之间的15- 22年和50- 60年左右的时期内,不难得出高度一致的估计。这是在两个独立的方式,通过小波和周期图方法。但是,高价值的连贯性是否意味着存在高意义的连贯性呢?为了研究这一点,研究了四种不同的显著性度量。由于数据的周期性,只有基于非参数随机相位方法的蒙特卡罗模拟是合适的。那么,连贯性的所有高值都不重要了。再加上缺乏一个物理机制,可以连接这些现象,行星假说因此被驳回。

英文摘要:

There are claims that there is correlation between the speed of center of mass of the solar system and the global temperature anomaly. This is partly grounded in data analysis and partly in a priori expectations. The magnitude squared coherence function is the proper measure for testing such claims. It is not hard to produce high coherence estimates at periods around 15--22 and 50--60 years between these data sets. This is done in two independent ways, by wavelets and by a periodogram method. But does a coherence of high value mean that there is coherence of high significance? In order to investigate that, four different measures for significance are studied. Due to the periodic nature of the data, only Monte Carlo simulation based on a non-parametric random phase method is appropriate. None of the high values of coherence then turn out to be significant. Coupled with a lack of a physical mechanism that can connect these phenomena, the planetary hypothesis is therefore dismissed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑