Four-Dimensional Structure of Atmospheric Waves and Energy Transportation

大气波的四维结构与能量传输

• 批准号: 13136203
• 负责人: TSUDA Toshitaka
• 金额: $ 81.54万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13136203/
• 关键词: Equatorial atmosphere; Atmospheric gravity waves; Atmospheric tides; Kelvin wave; Campaign of radiosonde observations; GPS occultation; MLT radar network; Indonesia; 地球観測; 大気波動; レーダー; ラジオゾンデ; 中層大気; 気象学; 大気現象; 赤道域; 大気レーダー; 三次元大気モデリング; インド

1. Radiosonde campaigns were carried out for three times, and with routine sonde observations atmospheric gravity waves and tides, and interaction between gravity waves and mean winds in the troposphere and the stratosphere have been clarified.2. Gravity wave activities over Equatorial Atmosphere Radar (EAR) have been studied with the EAR and TRMM satellite. Effect of topography was discussed. By combining Indian MST radar results, tropical convections have been found to be an important source of gravity waves.3. Structures, association with tropospheric sources, and long term variabilities of stratospheric Kelvin waves have been clarified with radiosondes and GPS occultation measurements.4. With an MLT radar network, radiosondes, OLR data and TIMED satellite data, structures, propagation from troposphere, as well as transitions of dominant components have been clarified on 5-8 day period waves.5. Potential energies (Ep) of atmospheric waves in the troposphere and stratosphere have bee … More n analyzed using GPS radio occultation data. Wave generations by tropospheric convections and QBQ-atmospheric wave interactions are found to be the major factor of producing Ep climatology.6. Variabilities of atmospheric tides, relations between QBOs in the MLT region and in the stratosphere, trends of meridional circulations in the MLT have been clarified using radars in Jakarta and India.7. Propagations of short-period (<60 mim) gravity waves and associations with cumulous convections has been clarified with airglow imagers and modelings.8. Interactions between wind and ionospheric plasmas, and between winds and metallic layers have been clarified with collaborative radar observations with imagers and lidars.To summarize, four-dimensional structures (time, height, spatial distributions) of generations and propagations of atmospheric waves caused by cumulous convections have been clarified with ground-based and satellite observations. Also, long term observational data (EAR, MLT radars, satellites) have been clarifying long-term variabilities of equatorial dynamics. Less

1。辐射的时间，并用常规的sonde oppheric坟墓波和潮汐波和对流层中的平均风和平流层的平均风进行了阐明。2卫星被发现是重力波的重要来源3。数据，对流层的繁殖以及在5-8天的临时波动中的偏移。5。发现相互作用是产生EP气候的主要因素。6。累积的气流成像仪和模型。8。由Slibed和卫星观测来澄清。

项目成果

Long-term behavior of the Kelvin waves revealed by CHAMP/GPS RO measurements and their effects on the tropopause structure

• DOI: 10.5194/angeo-24-1355-2006
• 发表时间: 2006-07
• 期刊: Annales Geophysicae
• 影响因子: 1.9
• 作者: M. Ratnam;T. Tsuda;T. Kozu;S. Mori

A global distribution of sporadic E events revealed by means of CHAMP-GPS occultations

• DOI: 10.1186/bf03351910
• 发表时间: 2006-01
• 期刊: Earth, Planets and Space
• 作者: M. Garcia-Fernàndez;T. Tsuda

Overview of the MLT radar study in the CPEA project

CPEA项目中MLT雷达研究概述

• 发表时间: 2005
• 作者: Tsuda;T.
• 通讯作者: T.

Characteristics of Atmospheric Waves in the Tropics Observed with Ground-base d and GPS Occultation Measurements

地基观测和GPS掩星测量热带地区大气波的特征

• 发表时间: 2002
• 作者: Tsuda;T.
• 通讯作者: T.

Application of GPS Radio occultation Data for the Studies od Atmospheric Waves in the Stratosphere

GPS无线电掩星数据在平流层大气波研究中的应用

• 发表时间: 2007
• 作者: Y. Umemoto;H. Hashiguchi;S. Fukao;他;T. Tsuda
• 通讯作者: T. Tsuda