CEDAR Post-doc: Mesospheric Acoustic Gravity Wave Imaging and Tomography at a Sub Auroral Site

CEDAR 博士后：亚极光站点的中层声重力波成像和断层扫描

• 批准号: 9813867
• 负责人: Michael Mendillo
• 金额: $ 9万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-15 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9813867&HistoricalAwards=false
• 关键词: CEDAR; Post; doc; Mesospheric; Acoustic

ATM9813867This proposal will support the post-doctoral research of Dr. Steven Smith at Boston University's Center for Space Physics. The research will use the Boston University CEDAR Optical Tomography Imaging Facility (COTIF) to study the mesosphere and lower thermosphere (MALT). COTIF is a four-site network in New England consisting of an all-sky imager at Millstone Hill and three imaging spectrographs (two in Maine and one in Rhode Island), the only optical facility worldwide capable of ground-based atmospheric emission tomography. This project will take advantage of a new spacing configuration for detecting structure in the 80 to 150 km domain. The study will make use of existing as well as new data. Specific emphasis will be placed on studying the altitude variations of acoustic gravity waves. The data analysis will yield estimates of the vertical momentum flux of gravity waves at two altitudes. The divergence of the vertical flux gives the acceleration or deceleration of the mean wind field by interactions between the neutral winds and waves. Long term seasonal and local time variations in gravity waves will also be investigated

ATM9813867这项提案将支持波士顿大学太空物理中心史蒂文·史密斯博士的博士后研究。 该研究将使用波士顿大学雪松光学层析成像设施（COTIF）研究中层和下热层（麦芽）。 COTIF是新英格兰的一个四个地点网络，由米尔斯通山（Millstone Hill）的全天堂成像仪和三个成像光谱仪（缅因州两个，一个在罗德岛州）组成，这是全球唯一能够地面大气排放断层扫描的光学设施。 该项目将利用一种新的间距配置，用于检测80至150 km域中的结构。 该研究将利用现有数据和新数据。 具体的重点将放在研究声学波的高度变化上。 数据分析将产生两个高度重力波的垂直动量通量的估计。 垂直通量的差异通过中性风与波之间的相互作用，从而得出平均风场的加速或减速。 还将研究重力波的长期季节性和当地时间变化