A study on the middle and upper atmosphere dynamics

中高层大气动力学研究

基本信息

批准号：
61302088
负责人：
KATO Susumu
金额：
$ 5.76万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61302088/
关键词：
middle atmosphere upper atmosphere midlatitude ionosphere internal gravity waves MST radar MU radar RASS lidar 赤道レーダー MAP@MAC 中層大気国際協同観測計画重力波

项目摘要

Based upon our scientific accomplishments the Middle Atmosphere Program (MAP;1982-85), a comprehensive study of the middle and upper atmosphere dynamics has been performed theoretically, observationally and from data analyses for the three fiscal year period of 1986-88. Five related subjects are investigated separately, and their synthesis is pursued through more than 20 scientific meetings which we either hosted ot co-sponsored. Some of them are: the Fourth (International) MST Radar Workshop held in November 29 - December 2,1988 in Kyoto; the First, Second, and Third Middle Atmosphere Symposia held in Tokyo; the STE Symposia of 1986, 87 and 88 held in either Kyoto to tTkyo; the Equatorial Radar Meetings held in Kyoto; and so forth. The principal scientific results obtained are as follows: [1] A universal vertical wavenumber spectrum of the horizontal wind variations is observationally confirmed from MU radar results so that one can conclude that the gravity waves generated in the lowe … More r atmosphere increase their amplitude and become saturated everywhere while propagating upwards, resulting in the momentum fiux deposit and turbulence excitation in the middle atmosphere. [2] The midlatitude ionosphere in the Asian sector is probed for the first time by the MU radar. The mean and seasonal variations of electron density, electron/ion temperature, and ion drift velocity are analyzed. Also a medium-scale gravity wave generated by a large substorm is detected by the MU radar. Midlatitude ionospheric field aligned irregularities (FAI) are detected and their dynamical features are analyzed. [3] Middle atmosphere temperature profiles are remotely sensed by lidar and RASS techniques. The lidar technique makes continuous measurements of the temperature in the 30-70 km height range feasible, while the RASS technique can measure it below 20 km. [4] Based upon the results as shown in the subjects 1-3 above, the gravity wave effects upon the middle atmosphere dynamics are quantitatively investigated, and the dynamical coupling effects caused by upward propagating gravity waves are estimated to construct a new atmospheric model of the middle and upper atmosphere. [5] System analyses of a new equatorial radar are made, and it is found that the construction of a large MST redar system is feasible with our current technical capabilities. Less

根据我们的科学氛围计划（MAP; 1982-85），从理论上进行了观察，并从1986 - 88年的三财政年度进行了数据分析。在11月29日举行的雷达工作室在京都举行的第一个，第二和第三个大气层在东京举行的。如下所示：[1]从MU雷达结果证实了水平风变化的通用波数谱。亚洲分泌物中的纬度电离层中的纬度电离是为for for for for for for for for for for for for for the for the for for the the for for the sT Time。电子/离子温度和离子漂移速度也被分析RASS技术可以在20公里以下进行测量，对中间大气动力学定量的重力波效应，并且通过向上传播重力波的动态耦合效率估计可以消耗掉以构建中间和上层ATMSPRE的新大气模型。 [5]进行了新的赤道雷达的系统分析，这是大型MSTAR系统的结构