Research on Modeling Large Scale Dynamical Effects on Climate

大尺度动力对气候影响的模拟研究

• 批准号: 0933936
• 负责人: Raymond Pierrehumbert
• 金额: $ 116.05万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0933936&HistoricalAwards=false
• 关键词: Research; Modeling; Large; Scale; Dynamical

A broad range of climate dynamics research motivated by extra-solar planet climate, current and past Solar System planetary climate, and deep-time Earth climate will be pursued. A common feature of this class of problems is the focus on collective behavior emerging from coupling of interesting fluid mechanical effects to interesting effects from novel radiative transfer, novel thermodynamics, or novel geochemistry. Specific problems include the effects of clouds and subsaturation on the runaway greenhouse, the climate of Super-Earths about M-dwarf stars, and the seasonal cycles of planets in highly eccentric orbits. Problems related to the Neoproterozoic climate of Earth include the effect of coupled dust/ice/climate evolution on deglaciation of the Snowball Earth, the dynamical effects of carbon-dioxide condensation, and the nature of the post-Snowball hothouse climate. In addition, several investigations bearing on anthropogenic Earth climate change will be carried out, including modeling related to the use of past mountain-glacier extent in paleothermometry, investigations of the physical nature of feedbacks leading to high climate sensitivity, and continued development of stochastic models of atmospheric humidity.Broader impacts of this project include contributions to human resources development for addressing pressing problems in climate change on Earth. The novel and imaginative problems suggested by extra-solar planet climate are an effective way to motivate mathematicians, physicists and astrophysicists at all career levels to get involved in basic problems in atmospheric physics and dynamics. The demonstration of the universal applicability of basic physical principles across planets with diverse climates helps the public to build confidence in the physics on which forecasts of global warming are based; moreover, the curiosity-driven research on such problems can lead to unanticipated advances in things like radiative transfer modeling and can help shake loose new ideas that may relate to Earth climate. Finally, by contributing to the understanding of habitability, the research serves a deep-seated human need for exploration and understanding the place of humanity in the Universe, in much the same was as does research on cosmology.

将开展由太阳系外行星气候、当前和过去太阳系行星气候以及深时地球气候推动的广泛的气候动力学研究。这类问题的一个共同特征是关注从有趣的流体力学效应与新颖的辐射传输、新颖的热力学或新颖的地球化学的有趣效应的耦合中出现的集体行为。具体问题包括云层和饱和度对失控温室的影响、M矮星周围超级地球的气候以及高度偏心轨道上行星的季节周期。与地球新元古代气候相关的问题包括尘埃/冰/气候耦合演化对雪球地球冰川消融的影响、二氧化碳凝结的动力学效应以及雪球后温室气候的性质。此外，还将开展一些与人为地球气候变化有关的调查，包括与在古测温中使用过去的山地冰川范围相关的建模、对导致高气候敏感性的反馈的物理性质的调查以及大气湿度随机模型的持续开发。该项目的更广泛影响包括为解决地球气候变化紧迫问题的人力资源开发做出贡献。太阳系外行星气候所提出的新颖且富有想象力的问题是激励各个职业级别的数学家、物理学家和天体物理学家参与大气物理和动力学基本问题的有效方式。展示基本物理原理在不同气候的行星上的普遍适用性，有助于公众建立对全球变暖预测所依据的物理学的信心；此外，好奇心驱动的对此类问题的研究可以在辐射传输模型等方面带来意想不到的进展，并有助于摆脱可能与地球气候有关的新想法。最后，通过促进对宜居性的理解，这项研究满足了人类探索和理解人类在宇宙中的地位的根深蒂固的需求，就像宇宙学研究一样。