EAGER: Impacts of Fundamental Understanding of Atmospheric Energetics and Non-local Eddies on Frontier Atmospheric Research

EAGER：大气能量学和非局域涡流的基本理解对前沿大气研究的影响

• 批准号: 2203248
• 负责人: Jielun Sun
• 金额: $ 27.47万
• 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: 2021
• 资助国家: 美国
• 起止时间: 2021-11-15 至 2025-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2203248&HistoricalAwards=false
• 关键词: EAGER; Impacts; Fundamental; Understanding; Atmospheric

This project is supported under the auspices of the EArly Concept Grant For Exploratory Research (EAGER) program. The project generally seeks to investigate two outstanding fundamental issues at the frontier of atmospheric science: 1) understanding atmospheric energetics; and 2) understanding the dominant role of non-local eddies in energy and momentum transfers across scales of atmospheric motions. The research strategy combines theoretical investigation, observational analyses, and modeling in an effort to better inform theoretical aspects of atmospheric processes that are validated by observations and confirmed by numerical models.The researcher will pursue two specific objectives for the project. The first objective aims to constrain atmospheric energetics under the influence of diabatic heating and cooling by analyzing existing field observations with a focus on non-hydrostatic energy transfer. The second objective seeks to develop a one-dimensional model based on energy conservation laws and physically-based surface conditions for capturing non-local eddies in energy and momentum transfers. It is suggested to achieve this objective without parameterizing turbulent mixing and investigating impacts of non-hydrostatic energy transfer on atmospheric dynamics and thermodynamics with validation using boundary-layer field observations over a range of atmospheric instabilities through the diurnal cycle.The potential Broader Impacts include challenging scientific orthodoxy and seeking to better understand fundamental atmospheric physics that governs atmospheric dynamics and thermodynamics. This is critical to addressing a range of atmospheric phenomena strongly influenced by diabatic heating and cooling such as convective systems (hurricanes, tropical cycles, tornado genesis) and stable boundary layers when non-hydrostatic energy transfer is potentially strong.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.

该项目得到了探索性研究早期概念赠款（急切）计划的主持人的支持。该项目通常试图调查大气科学边界的两个杰出基本问题：1）了解大气能量学； 2）理解非本地涡流在能量和动量转移中的主要作用。该研究策略结合了理论研究，观察性分析和建模，以更好地为大气过程的理论方面提供了信息，这些方面是通过观察结果验证并由数值模型确认的。研究人员将为该项目追求两个具体的目标。第一个目标旨在通过分析现有的现场观测值，重点关注非静态能量转移来限制大气能的影响。第二个目标试图基于节能定律和基于物理的表面条件开发一维模型，以捕获能量和动量转移的非本地涡流。 建议实现这一目标，而不必参数化湍流混合和研究非静态能量转移对大气动态和热力学的影响，并通过使用边界层野外观察结果进行验证，并通过在纵向周期进行一系列大气层的实地观察。潜在的广泛影响包括富有挑战性的科学正直型正常氧化和寻求更好地理解的动力学，以便更好地理解基本的氛围。这对于解决一系列大气现象至关重要，受糖尿病加热和冷却的强烈影响，例如对流系统（飓风，热带周期，龙卷风起源）和稳定的边界层，当非静态能量转移可能具有强大的强劲时。