AGS-FIRP Track 2: Understanding Vertical Variation of Energy Dissipation near the Surface for Solving the Mystery of the Observed Surface Energy Imbalance

AGS-FIRP 轨道 2：了解地表附近能量耗散的垂直变化，以解决观测到的地表能量不平衡之谜

• 批准号: 2231229
• 负责人: Jielun Sun
• 金额: $ 56.21万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-01-01 至 2025-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2231229&HistoricalAwards=false
• 关键词: AGS; FIRP; Track; Understanding; Vertical

The overarching goal of the project is to advance understanding of atmospheric energetics and the vertical variation of energy dissipation near the surface. Understanding atmospheric energetics, especially the linkage between kinetic and thermal energy, is critical for comprehending extreme weather events under climate change. Scientists have tracked heat exchange at the surface, which is responsible for warming/cooling the soil beneath and the atmosphere above for over 80 years. With consideration of all possible heat sources and sinks, they have found that heat sources do not match all the heat usages by the soil and the atmosphere and that there is a missing link in the energy balance equation. Based on latest understanding of how heat is transferred, the principal investigator suggests a new theory for explaining the missing piece in the energy balance equation. Results from this study have the potential to improve theoretical understanding of how heat and air movements are connected, and thereby improve weather and climate models, and severe weather forecasts. As part of this project, the principal investigator will engage in education and outreach activities with student participants from a Hispanic-serving institution, local elementary schools, and public outreach events. This award provides funding to investigate the impact of hydrostatic imbalance on energy transfer and validating the contribution of energy dissipation to the surface energy imbalance. The objective of the project is threefold: 1) to conduct a field experiment to directly observe the non-hydrostatic energy transfer and energy dissipation, 2) to investigate the hydrostatic imbalance in environmental energy partition between kinetic and thermal energy as well as energy dissipation as a function of height and atmospheric stability, and 3) to continue developing a simple one dimensional model to validate theoretical understanding of atmospheric energetics as well as momentum and mass conservation in comparison to observations. Data collected from field observations will be used to measure how much energy from air motions is reduced due to surface friction to see whether the diurnal pattern of this energy dissipation matches the observed imbalance cycle. Results from the field study will be used in the development of the one-dimensional model and for improving understanding of total energy conservation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目的总体目标是提高对大气能量学的理解和表面附近能量耗散的垂直变化。了解大气能量学，尤其是动能与热能之间的联系，对于理解气候变化下极端天气事件至关重要。科学家在地表上追踪了热量交换，该交换负责使下面的土壤和上面的大气变暖/冷却80多年。考虑到所有可能的热源和水槽，他们发现热源不符合土壤和大气的所有热量使用，并且能量平衡方程中缺少链接。基于对热量如何转移的最新理解，主要研究者提出了一种新理论，用于解释能量平衡方程中缺少的作品。这项研究的结果有可能提高对热量和空气运动如何连接的理论理解，从而改善天气和气候模型以及恶劣的天气预测。作为该项目的一部分，首席研究人员将与来自西班牙裔服务机构，当地小学和公共外展活动的学生参与者进行教育和外展活动。该奖项提供了资金来研究静液压失衡对能量传递的影响，并验证耗能对表面能量不平衡的贡献。该项目的目的是三重：1）进行现场实验，直接观察非静态能量转移和能量耗散，2）调查环境能量分离中环境能量分离中的液压不平衡，能量和热能之间的静态能量分离，以及能量耗散，以及作为高度和大气稳定性的范围，以确定一个稳定的模型，以验证一个元素的氛围，以验证一个稳定的氛围，以验证一个元素的氛围，以众所周知的氛围，以众所周知的氛围，并构成了氛围的氛围。观察。从现场观测中收集的数据将用于测量由于表面摩擦而减少空气运动的能量，以查看这种能量耗散的昼夜模式是否与观察到的不平衡循环相匹配。现场研究的结果将用于一维模型的开发，并提高对总能源保护的理解。该奖项反映了NSF的法定任务，并使用基金会的智力优点和更广泛的影响评估审查标准，认为值得通过评估来获得支持。