The Role of Neutrons in Nucleation of Supercooled Water in High Latitude Clouds

In 2021 it was shown in a lab in Albany, NY, that a beam of neutrons can nucleate a small volume of deeply supercooled water, opening up the possibility that the effect may be occurring in clouds, at least at high latitudes. In 2023, in the Nuclear Engineering lab at UC Berkeley, the effect was repeated with a 1 Curie PuBe source, nucleating -19 C water when the neutron source we 30 cm away. It is known that there are as many as eight times as many cosmogenic neutrons incident on Earth at high latitudes, suggesting their involvement in cloud nucleation in these regions. The new effect anfd ramifications will be discussed.