We examine the relationship between the GISP2 dust profile, a<br />proxy for the Northern Hemisphere atmospheric dust load, and the<br />Wolf sunspot number, a proxy for solar activity. The two records<br />are positively correlated, but the phase of the relationship is disturbed<br />by the effects of explosive volcanism. Similar correlation failures<br />have already been noted for many other climatic indicators. Our work<br />suggests that a large fraction of the correlation failures may be<br />attributed to explosive volcanic activity.
Donarummo, J., Ram, M., & Stolz, M. R. (2002). Sun/dust correlations and volcanic interference. Geophysical Research Letters, 29(9), 75-1-75–4. https://doi.org/10.1029/2002gl014858