Coupling of Gravity Waves and Convection, and Their Impacts on the Dynamics and Predictability of Multiscale Processes Associated with Moist Baroclinic JetFront Systems

重力波和对流的耦合及其对与潮湿斜压射流系统相关的多尺度过程的动力学和可预测性的影响

• 批准号: 1712290
• 负责人: Yunji Zhang
• 金额: $ 68.31万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-15 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1712290&HistoricalAwards=false
• 关键词: Coupling; Gravity; Waves; Convection; Their; Coupling; Gravity; Waves; Convection; Their

This study seeks to study the coupling of gravity waves and moist convection, focused on impacts to the dynamics and predictability of multi-scale processes associated with moist baroclinic jetfront systems through high-resolution observational analysis and ensemble simulations. This research will advance our understanding of the relative roles of gravity waves and moist convection regarding severe and extreme weather at middle latitudes, and potentially improve the predictability of tropical systems.Major objectives of this research include: (1) the characterization of the global distribution, source, structure, propagation and amplitude of tropospheric and stratospheric gravity waves, along with their energy and momentum fluxes, using analyses and forecasts from numerical weather prediction (NWP) models; (2) understand the potential impacts of gravity waves and convection on atmospheric energy spectra slopes at the mesoscales and examine the resolvability of gravity waves in NWP models with 1-100 km grid spacing; and (3) to explore the impacts of gravity waves and their interaction with moist convection on the multi-scale atmospheric predictability.

这项研究旨在研究重力波和潮湿对流的耦合，重点是通过高分辨率的观测分析和集合模拟的多尺度过程的动力学和可预测性的影响。 这项研究将提高我们对中纬度处严重和极端天气的重力波和潮湿对流的相对作用的理解，并可能提高热带系统的可预测性。这项研究的目标包括：（1）全球分布，来源，结构，结构，结构，结构，结构，结构，繁殖和速度以及范围的效果以及分析的效果以及分析的范围，以及分析的范围，并分析其数量，并分析其数量。 （NWP）模型； （2）了解重力波的潜在影响和对流对介质的大气能光谱斜率的影响，并检查具有1-100 km网格间距的NWP模型中重力波的分解性； （3）探索重力波的影响及其与潮湿对流的相互作用对多尺度大气可预测性的影响。