CEDAR: Exploration of Lower-atmosphere Wave Forcing, Vertical Wave Coupling and Their Impacts on the Ionosphere and Thermosphere Variability Using WAM, Lidar and ISR

CEDAR：利用 WAM、激光雷达和 ISR 探索低层大气波浪强迫、垂直波耦合及其对电离层和热层变化的影响

• 批准号: 1705448
• 负责人: Xian Lu
• 金额: $ 5.38万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-11-01 至 2019-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1705448&HistoricalAwards=false
• 关键词: CEDAR; Exploration; Lower; atmosphere; Wave

The goal of this project is to investigate wave forcings originating from the lower atmosphere including their sources, wave interactions and coupling, and their impacts on ionospheric/thermospheric variability. Meteorological sources of wave energy from the lower atmosphere are responsible for producing significant variability in the upper atmosphere, which impacts space weather. Vertical wave coupling is a fundamental atmospheric process that has profound effects on the variability of the ionosphere and thermosphere. This project will utilize existing and ongoing lidar and Incoherent Scatter Radar (ISR) observations to collectively study atmospheric waves in both the neutral atmosphere and ionosphere, and the Whole Atmosphere Model (WAM) to understand and interpret these rich datasets. In particular, the project will focus on characterizing 1-9 h period gravity waves by comparing observations with simulations in terms of magnitude, vertical and horizontal wavelengths, propagation direction, and latitudinal distribution. The tidal modulation of fast gravity waves will also be studied, and the source regions identified.

该项目的目标是调查源自低层大气的波强迫，包括其来源、波的相互作用和耦合，及其对电离层/热层变化的影响。来自低层大气的波能的气象来源造成高层大气的显著变化，从而影响空间气象。垂直波耦合是一种基本的大气过程，对电离层和热层的变化有着深刻的影响。 该项目将利用现有和正在进行的激光雷达和非相干散射雷达（ISR）观测来共同研究中性大气和电离层中的大气波，以及全大气模型（WAM）来理解和解释这些丰富的数据集。 特别是，该项目将侧重于表征1-9小时周期的重力波，通过比较观测与模拟的幅度，垂直和水平波长，传播方向和纬度分布。还将研究快速重力波的潮汐调制，并确定震源区域。