Japan Medium-term Visit: Ionosphere Studies with the Middle and Upper Atmosphere (MU) Radar

该奖项将支持威廉·L博士。年波士顿大学的奥利弗 与Susumu Kato教授合作三个月， 京都大学无线电大气科学中心的工作人员说， 日本 他们将使用中高层大气（MU）雷达， 日本Shigaraki，特别是其电离层能力 非相干散射研究，1）提高统计精度， 通过增加可用数据库的电动力学模型; 2） 发展一种新的平行于磁场的速度运动模型 场研究中性风模式; 3）使用多普勒速度以及 作为多波束密度测量来研究电离层移动 波;和4）将当前和过去的MU雷达实验与 其他地方进行的类似实验的结果。 了解高层大气对太阳辐射的反应 粒子输入是整个建模问题的一部分 全球大气的变化。 非相干散射雷达 这项技术提供了电子、离子和中性密度的数据 以及这些量是如何随着各种 能源投入的种类。 这个项目将允许奥利弗博士 继续研究来自MU的非相干散射雷达数据 志贺木的雷达 这些研究将利用增加的 数据库，以调查季节和太阳周期的依赖， 与当前模型有关的电离层电动力学; 研究中性风引起的垂直离子运动;寻找 地磁活动对电离层的影响;并比较 这个站的数据和世界各地的其他数据 在同一时期。 以前的合作项目 由这位首席研究员发起的，已经增加了 日本与世界其他国家的相互作用 散射雷达科学界和目前的项目将 加强和扩大这一活动。

This award will support Dr. William L. Oliver of Boston University in a collaboration for three months with Prof. Susumu Kato and co- workers at the Radio Atmospheric Science Center of Kyoto University, Japan. They will use the Middle and Upper Atmosphere (MU) Radar at Shigaraki, Japan, and in particular its capability for ionospheric incoherent scatter studies, to 1) improve the statistical accuracy of the electrodynamics model by increasing the available data base; 2) develop a new model for velocity motion parallel to the magnetic field to study neutral-wind patterns; 3) use Doppler velocity as well as multi-beam density measurements to study ionospheric traveling waves; and 4) correlate current and past MU radar experiments with results of similar experiments conducted elsewhere. Understanding the behavior of the upper atmosphere in response to solar and particle inputs is one part of the overall problem of modeling changes in the total global atmosphere. The incoherent scatter radar technique provides data on the electrons, ions and neutral densities of the upper atmosphere and how these quantities change with various types of energy inputs. This project will permit Dr. Oliver to continue a study of the incoherent scatter radar data from the MU Radar at Shigaraki. The studies will take advantage of the increased data base to investigate seasonal and solar-cycle dependence of the electrodynamics of the ionosphere in relation to current models; study the vertical ion motions due to neutral winds; look for the influence of geomagnetic activity on the ionosphere; and compare the data from this station with other data taken throughout the world over the same time periods. The previous collaborative program initiated by this principal investigator has already increased the interaction between the Japanese and the rest of the world's incoherent scatter radar scientific community and this current project will strengthen and increase this activity.