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

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
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2021
资助国家:
美国
项目状态:
未结题
起止时间:
2021-11-15 至 2025-04-30

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中文摘要
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英文摘要
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.
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AGS-FIRP Track 2: Understanding Vertical Variation of Energy Dissipation near the Surface for Solving the Mystery of the Observed Surface Energy Imbalance
Collaborative Research: Understanding Interactions between Mesoscale and Microscale Flows in the Stable Boundary Layer over Shallow Terrain
Collaborative Research: Vertical Divergence of Turbulent and Radiative Fluxes and Influence of Mesoscale Motions on Turbulence Intermittency
  • 批准号:
    9906637
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $11.53万
  • 财政年份:
    1999
  • 负责人:
    Jielun Sun
  • 依托单位:
The Bulk Aerodynamic Method for Heat Flux Based on Surface Radiation Temperature
  • 批准号:
    9417959
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $23.28万
  • 财政年份:
    1995
  • 负责人:
    Jielun Sun
  • 依托单位:
国内基金
海外基金
IMPACTS站点土壤铝活化机制研究