CEDAR/TIMED: Southern-Hemisphere Mesopause Winds, Temperatures, and OH/557.7 nm Airglow Intensities

ATM 9872807研究人员将升级秘鲁阿雷基帕光学天文台现有的法布里-珀罗干涉仪（FPI）。 这次升级将产生以高精度和频繁采样率测量中层顶风和温度的能力。 这些修改还将改进与中间层测量交错的热层风、温度和气辉强度的测量。 这些观测将有助于研究中层顶动力学的主要特征，如昼夜潮汐风和温度，以及南半球一个区域的行星波变化，在该区域，地面站的电流采样分布稀疏。 这些夜间测量，加上Jicamarca雷达对白天风的测量，将有助于改善由于航天器在当地时间的缓慢进动而造成的卫星测量的采样和混叠误差。 这一升级还将使研究中层顶风、温度和氢气辉强度的小尺度梯度成为可能，这些梯度可能来自地形波效应。 这项工作还包括升级阿雷基帕的成像照相机，包括采购和安装宽带滤光器，以便能够对夜间羟基强度的变化进行成像观察。阿雷基帕的观测将支持CEDAR/TIMED的科学目标。 CEDAR代表耦合，能量学和大气区域动力学，是一个全球变化计划，将理论建模与地面测量相结合，以研究高层大气和电离层。 TIMED（Thermosphere，Ionosphere，Mesosphere Energetics and Dynamics）是美国国家航空航天局的一个卫星计划，用于研究类似的大气层区域。 CEDAR/TIMED联合方案旨在协调地面和空间观测，以更好地了解低热层和电离层的物理过程。

ATM9872807The investigators will upgrade an existing Fabry Perot Interferometer (FPI) at the Arequipa Optical Observatory in Peru. The upgrade will produce a capability for mesopause measurements of winds and temperatures with high accuracy and frequent sampling rates. The modifications will also improve the measurements of thermospheric winds, temperatures, and airglow intensities interleaved with the mesosphere measurements. These observations will contribute to the study of major features of mesopause dynamics such as the diurnal tidal winds and temperatures, and planetary wave variations in a region of the Southern Hemisphere where the current samping distribution by ground-based stations is sparse. These nighttime measurements, combined with Jicamarca Radar measurements of daytime winds, will help ameliorate the sampling and aliasing errors that satellite measurements suffer due to the slow precession of the spacecraft in local time. The upgrade will also make possible the study of mesopause small-scale gradients in wind, temperature, and hydroxyl airglow intensities that may arise from orographic wave effects. Also included in the effort is an upgrade in an imaging camera at Arequipa, involving the procurement and installation of a broadband filter to make possible the imaging observations of nocturnal variations of hydroxyl intensities. The Arequipa observations will support CEDAR/TIMED science goals. CEDAR, which stands for Coupling, Energetics, and Dynamics of Atmospheric Regions, is a global change program that combines theoretical modeling with ground-based measurements to study the upper atmosphere and ionosphere. TIMED, for Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics, is a NASA satellite program to study similar regions of the atmosphere. The joint CEDAR/TIMED program aims to coordinate ground-based and space-based observations to achieve better understanding of physical processes in the lower thermosphere and ionosphere.