Study of the atmospheric circulation of Venus using observational data taken by Venus orbiters

利用金星轨道飞行器获取的观测数据研究金星大气环流

• 批准号: 22244060
• 负责人: NAKAMURA MASATO
• 金额: $ 22.05万
• 依托单位: Japan Aerospace Exploration Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22244060/
• 关键词: 金星大気; 大気力学; 大気科学; 雲物理; Venus Express; あかつき; 金星; 大気

The mechanism of the atmospheric circulation and the transport processes of atmospheric constituents were studied by analyzing observational data taken by Venus Express and ground-based observations. The data were processed using the data analysis softwares developed for the Japanese Venus arbiter Akatsuki, which will be inserted into a Venus orbit in 2015. The analysis revealed various aspects of the atmosphere, such as three-dimensional structures of planetary-scale waves, dissipation of gravity waves at high altitudes, complicated vertical distributions of the upper haze layer, latitudinal and local-time dependence of the cloud height, and long-term variations of the cloud albedo. Numerical simulations, and the observed features were compared with those model results to understand the mechanism. These studies clarified remaining issues to be solved, such as the role of meso-scale processes, chemical processes governing the cloud albedo, and the mechanism of climate variation.

通过分析金星快车的观测资料和地面观测资料，研究了金星大气环流的机制和大气成分的输送过程。这些数据是使用为日本金星仲裁者Akatsuki开发的数据分析软件处理的，Akatsuki将于2015年进入金星轨道。分析揭示了大气的各个方面，例如行星尺度波的三维结构、高海拔重力波的消散、上部霾层的复杂垂直分布、云高的纬度和当地时间依赖性以及云密度的长期变化。将数值模拟和观测到的特征与这些模型结果进行比较，以了解机制。这些研究澄清了尚待解决的问题，如中尺度过程的作用、控制云对流的化学过程和气候变化的机制。

项目成果

Microscale Simulations of Convective Mixing in the Venus Cloud Layer: Comparison with Observations

金星云层对流混合的微尺度模拟：与观测结果的比较

• 发表时间: 2012
• 作者: Yamamoto;M
• 通讯作者: M

Horizontal structure of planetary-scale waves at the cloud top of Venus deduced from Galileo SSI images with an improved cloud-tracking technique

使用改进的云跟踪技术从伽利略 SSI 图像推导出金星云顶行星尺度波的水平结构

• 发表时间: 2012
• 期刊: Planet Space Sci
• 影响因子: 2.4
• 作者: Kouyama;T.;T. Imamura;M. Nakamura;T. Satoh and Y. Futaana
• 通讯作者: T. Satoh and Y. Futaana

Contrast sources for the infrared images taken by the Venus mission AKATSUKI

金星任务 AKATSUKI 拍摄的红外图像的对比源

• 发表时间: 2011
• 期刊: Earth Planets Space
• 影响因子: 3
• 作者: Takagi;S. and N. Iwagami
• 通讯作者: S. and N. Iwagami

Return to Venus of Akatsuki

重返晓之维纳斯

• 作者: K.Kawamura;他6名;Nakamura,M.
• 通讯作者: Nakamura,M.

Inverse insolation dependence of Venus's cloud-level convection

金星云层对流的逆日照依赖性

• 发表时间: 2013
• 作者: T. Imamura;T. Higuchi;Y. Maejima;M. Takagi;N. Sugimoto;K. Ikeda;H. Ando
• 通讯作者: H. Ando