A study on polar atmospheric tide by EISCAT and other radars and numerical modellings

EISCAT 和其他雷达及数值模拟对极地大气潮的研究

• 批准号: 14340146
• 负责人: ASO Takehiko
• 金额: $ 6.02万
• 依托单位: NATIONAL INSTITUTE OF POLAR RESEARCH
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340146/
• 关键词: EISCAT radar; atmospheric tide; meteor radar; numerical modeling; middle atmosphere; GCM; planetary wave; gravity wave; 大気光・オーロラ光学観測; 大気潮汐波・重力波; 中層大気; 電磁圏ダイナミックス; オーロラ大気光トモグラフィ

Through studies on polar atmospheric tide at MLT regions by EISCAT and other arctic and also Antarctic radars and modelings, it is found that altitude profiles of EISCAT, SSR and meteor radar tide are by and large contiguous or consistent in various respects, that climatology of tides are clarified in which, e.g., latitudinal comparison of diurnal component between Tromso and Svalbard is compatible with high-latitude (1,-2) mode and observed spectra around semidiurnal component are consistent with GCM, that zonal study between Tromso and Poker Flat suggests summertime non-migrating semidiurnal mode is not quite obvious as compared with Antarctic, consistent with modeled process and observed north-south asymmetry in stratospheric planetary wave activity, that short period 6 and 8 hr tide and gravity wave are extracted to open a scope for comparative study with numerical models, that GCM model tells us both diurnal and semidiurnal non-migrating tides are relevant with stationary planetary wave at lower heights and also gravity wave happens to enhance or weaken diurnal tide, that linearized, steady model passably delineates terdiurnal and non-migrating signatures, while even most advanced WACCM model remains to fully interpret details of observed seasonal tidal climatology.

项目成果

Manson, A.H., C.E.Meek, T.Chshyolkova, S.K.Avery, D.Thorsen, J.W.MacDougall, W.Hocking, Y.Murayama, K.Igarashi, S.P.Namboothiri, P.Kishore: "Longitudinal and latitudinal Variations in Dynamic Characteristics of the MLT (70-95km) : A Study Involving the CU

Manson, A.H., C.E.Meek, T.Chshyolkova, S.K.Avery, D.Thorsen, J.W.MacDougall, W.Hocking, Y.Murayama, K.Igarashi, S.P.Namboothiri, P.Kishore：“

Yamashita, K., S.Miyahara, Y.Miyoshi, K.Kawano, J.Ninomiya: "Seasonal variation of non-migrating semidiurnal tide in the polar MLT region in a general circulation model"J.Atmos.Solar Terr.Phys.. 64. 1083-1094 (2002)

Yamashita，K.，S.Miyahara，Y.Miyoshi，K.Kawano，J.Ninomiya：“大气环流模型中极地MLT地区非迁移半日潮的季节变化”J.Atmos.Solar Terr.Phys。

Aso, T.: "An overview of the terdiurnal tide observed by polar radars and optics"Adv.Polar Upper Atmos.Res.. 17. 167-176 (2003)

Aso, T.：“极地雷达和光学观测到的昼夜潮汐概述”Adv.Polar Upper Atmos.Res.. 17. 167-176 (2003)

A comparison of meteor and middle frequency radar kilometer scale MLT dynamics at 70゜N

70°N 处流星和中频雷达公里级 MLT 动力学比较

• 发表时间: 2005
• 期刊: J.Atmos.Solar-Terr.Phys. (in press)
• 作者: Hall;C.M.;T.Aso;M.Tsutsumi;S.Nozawa;C.E.Meek;A.H.Manson
• 通讯作者: A.H.Manson

Murphy, D.J., M.Tsutsumi, D.M.Riggin, G.O.L.Jones, R.A.Vincent, M.E.Hagan, S.K.Avery: "Observations of a non-migrating component of the semidiurnal tide over Antarctica"Journal of Geophysical Research. (in press). (2003)

Murphy, D.J.、M.Tsutsumi、D.M.Riggin、G.O.L.Jones、R.A.Vincent、M.E.Hagan、S.K.Avery：“南极洲半日潮汐非迁移成分的观测”地球物理研究杂志。