Processes And Climatology Of Gravity Waves (PACOG)

PACOG是“MS-GWaves”研究单位内的一个项目，致力于重力波的一般研究。PACOG专注于大气观测和与模式的比较。重力波在我们对中层大气的理解中起着关键作用，因为它们使大气远离辐射决定的条件高达100℃，并对环流系统和组成造成巨大的变化。它们是自下而上最重要的耦合机制。不幸的是，许多与重力波有关的过程还没有被很好地理解。这涉及到，例如，产生、传播、过滤、消散以及季节和时间变化。我们打算研究区域和全球尺度上重力波的气候学，以及它们与全球过程的相关性。我们将应用复杂和全面的仪器(激光雷达、雷达、卫星传感器等)相结合。并将借助基于再分析数据的相关模拟来解释我们的测量结果。MS-GWaves的最终目标是改进全球模式中使用的重力波的参数化。在PACOG中进行的观测应用于MS-GWaves的所有项目，例如，将本地和区域测量结果与来自卫星的全球观测(SV项目)进行比较时，或作为3DMSD和GWING项目中模型验证的基准测试。

PACOG is a project within the Research Unit "MS-GWaves" which is dedicated to the general study of gravity waves. PACOG concentrates on atmospheric observations and comparison with models. Gravity waves play a key role in our understanding of the middle atmosphere since they drive the atmosphere away from radiatively determined conditions by up to 100~K and impose drastic changes on circulation systems and composition. They are the most important coupling mechanism from below to above. Unfortunately, many processes related to gravity waves are not well understood. This concerns, for example, generation, propagation, filtering, dissipation as well as seasonal and temporal variability. We intend to study the climatology of gravity waves on regional and global scales, and also their relevance for global processes. We will apply a combination of sophisticated and comprehensive instrumentation (lidars, radars, sensors on satellites, etc.) and will interpret our measurements with the help of related simulations based on reanalysis data. The final aim of MS-GWaves is to improve the parametrization of gravity waves used in global models. Observations performed in PACOG shall be used in all projects of MS-GWaves, for example when comparing local and regional measurements with global observations from satellites (SV project) or as benchmark tests for the validation of modeling in the 3DMSD and GWING projects.