报告题目：Adaptation benefits and mitigation potentials of direct cooling engineering at the Earth's surface
单 位：Mirrors for Earth's Energy Rebalancing (MEER) Organization
邀 请 人：徐希燕 研究员
时 间：2024年8月29日下午2:00
地 点：2号楼319会议室
简介：
陶冶，哈佛大学生物化学学士，麻省理工大学物理化学博士，前哈佛大学罗兰研究所研究员，博士后导师，现任MEER（地表镜面反射地球能量收支再平衡）科研教育机构的执行董事兼首席科学家。MEER的宗旨是设计、开发和部署基于地表的可见光反射器/红外辐射器，和人类衣，食，住，行各种刚需耦合，从而在局部，区域，大陆，和最终全球范围内降低气温和极端天气灾害。MEER团队大胆追求有创造性的，可扩展的，和对全球暖化治理有确切效果的低科技工程解决方案。团队现在在非洲，美国，和印度等地进行中小规模户外实验，期待与国内科研技术同行们一起把阳光调控和利用技术在更多领域开发普及。
摘要：
Global warming is an urgent threat to which humans have responded with calls for greenhouse gas mitigation. Yet, by itself, conventional mitigation will produce barely-measurable improvement in Earth’s multi-decadal climate trajectory. This trajectory is driven by persistent imbalance in Earth’s energy budget, reaching a record surplus of 1.01 petawatt in July 2023. We take a pandisciplinary approach to design a new paradigm to guide human response to global warming. We introduce an universal metric called Cooling Return On Investment (CROI) for assessing the engineering feasibility of any climate mitigation concept. We find that the only existing climate adaptation and mitigation proposal capable of overcoming the energy imbalance hurdle are direct cooling methods. We assess the adaptation potential of mirrors in small-scale field experiments in soil, freshwater, and urban settings. We find cooling of air, soil, water, and infrastructure by between 1-20 degrees Celsius around solar noon, with strong suppression in the evaporation loss of water. We envision the preliminary data to inspire a conversation about the feasibility to experimentally determine the impacts on radiative balance, heat transport, atmospheric circulations, and cloud coverage at the micro and mesoscales. Such understanding is central for moving towards validating the climate mitigation potential of surface-based mirror arrays.