Henrik Svensmark

Papers

Total Citations

231

H-Index

About

Henrik Svensmark is a Danish physicist renowned for pioneering research on the link between cosmic rays, clouds, and climate change. His key research areas include solar-terrestrial physics, atmospheric aerosol formation, and the role of galactic cosmic rays in modulating Earth's cloud cover. Svensmark's major contribution is the theory that variations in cosmic ray flux—influenced by solar activity—affect low cloud formation, thereby impacting global temperatures. His highly cited 2009 paper (231 citations) demonstrates that Forbush decreases, caused by coronal mass ejections, lead to reduced liquid water in low clouds over oceans, providing empirical evidence for this mechanism. This work challenges conventional climate models by suggesting a natural, solar-driven component to climate variability. Though controversial, Svensmark's research has sparked significant debate and further investigation into cosmic ray–cloud interactions. He has also conducted laboratory experiments at the Technical University of Denmark, showing that cosmic rays enhance aerosol nucleation. His findings have profound implications for understanding past and present climate shifts, making him a central figure in the cosmic ray–climate hypothesis.