Climate Change Data Portal
| Chemical Nature and Origins of Atmospheric Brown Carbon Aerosol | |
| 项目编号 | http://gepris.dfg.de/gepris/projekt/250241099?language=en |
| Professor Dr. RalfZimmermann (Applicant) | |
| 项目主持机构 | Universität Rostock |
| 开始日期 | 2014 |
| 英文摘要 | Internal gravity waves link different layers of the atmosphere from the troposphere to the thermosphere and drive the large scale circulation of the middle atmosphere. However, many of the processes from their generation via propagation to dissipation are still incompletely understood and due to their small (often sub-grid) length scale they are poorly represented in numerical weather prediction and climate models. GWING is one of the projects of the research unit MS-GWaves that aims at advancing our understanding of the above mentioned multiscale dynamical processes involving atmospheric GWs with the ultimate goal to develop a unified parameterization of sub-grid scale GW processes (and their effects) from the sources to the dissipation. To contribute to this, the central goal of the project GWING is the development and application of the MA-ICON atmospheric general circulation model. With MA-ICON, the GWING project will integrate the new knowledge generated by all the MS-GWaves unit and focus on two overarching questions: 1) What is the impact of gravity wave processes on the global atmospheric circulation and its variability?2) What quantitative contribution do single parts of the GW spectrum provide to the atmospheric momentum and energy budgets? The MA-ICON model will be specifically designed to allow for the best possible representation of GW processes. It will be an upward extension (to the lower thermosphere) of the new icosahedral general circulation model ICON developed at the German Weather service (DWD) and the Max Planck Institute for Meteorology (MPI-M). A main feature of the models will be their potential to be run globally at sufficiently high resolution to allow for the direct simulation of a large fraction of the GW field. Furthermore, MA-ICON will have the potential for local refinements to reach extremely high horizontal resolutions, such to at least partially simulate GW generation mechanisms and episodic GW events. The large-scale circulation of the MA-ICON model will be validated using reanalysis data, the simulated GW properties using satellite and lidar/radar. With respect to the GW influence on the large-scale circulation we will focus on two specific features: the middle atmospheric summer easterlies and sudden stratospheric warming events. By performing such validations and analyses for different configurations of the MA-ICON model, it will be assessed in which respect the resolution of the model affects the GW spectrum and its influence on the large scale circulation. Thus our overarching questions will be addressed. |
| 学科分类 | 0505 - 分析化学;05 - 化学科学 |
| 资助机构 | DE-DFG |
| 项目类型 | Research Grants |
| URL | http://gepris.dfg.de/gepris/projekt/250241099?language=en |
| 国家 | DE |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/74781 |
| 推荐引用方式 GB/T 7714 | Professor Dr. RalfZimmermann .Chemical Nature and Origins of Atmospheric Brown Carbon Aerosol.2014. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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