The Link Between Galactic Cosmic Rays and Cloud Condensation Nuclei Abundance in the Marine Atmosphere

这项工作旨在调查太阳活动变化导致的星系宇宙线(GCR)变化是否会影响低云特性，如果是的话，则旨在阐明这种影响的物理机制和规模。GCR强度与低层云的全球平均覆盖率之间的明显相关性最近已有报道。P.I.将利用一个受气溶胶特性实验(ACE)和TRACE-P(太平洋上的输送和化学演化)等最新现场项目数据约束的基本气溶胶微物理模型来测试几个解释GCR和大气中云凝结核(CCN)之间联系的假设。这位P.I.将研究经典的二元和三元成核理论，以及他自己的离子介导成核(IMN)假说。

This effort is designed to investigate whether galactic cosmic ray (GCR) variations that result from variations in solar activity can affect low cloud properties, and if so, to elucidate the physical mechanism and the magnitude of such effects. Distinct correlations between GCR intensity and average global coverage of low-level clouds have recently been reported. The P.I. will utilize a basic aerosol microphysics model constrained by data from recent field programs such as the Aerosol Characterization Experiments (ACE), and the TRACE-P (Transport and Chemical Evolution over the Pacific) to test several hypotheses for explaining the link between GCR and cloud condensation nuclei (CCN) in the atmosphere. The P.I. will investigate classical binary and ternary nucleation theories as well as his own ion-mediated nucleation (IMN) hypothesis.