Department of Environmental Sciences Weizmann Institute, Rehovot 76100, Israel.
Sci Rep. 2013;3:2507. doi: 10.1038/srep02507.
Shallow marine clouds appear in two formations - open cells that are weakly reflective and closed cells that are more reflective and hence more effective at cooling the climate system. Lagrangian satellite data analysis reveals that open cells oscillate, forming and disappearing with a periodicity of ~3 hours. In contrast, closed cells maintain rigid structures for periods of more than 10 hours, suggesting that self-organisation breaks the link between the lifetime and the scale of a convective entity. These dynamical states are linked to two theoretical solutions of population dynamics.
浅海云层呈现两种形态——开放细胞,其反射率较弱;封闭细胞,其反射率较强,因此对气候系统的冷却作用更显著。拉格朗日卫星数据分析表明,开放细胞呈波动状,以约 3 小时为周期形成和消失。相比之下,封闭细胞的刚性结构可维持 10 小时以上,这表明自组织打破了对流实体的寿命与其规模之间的联系。这些动态状态与种群动态的两个理论解相关联。