Processes And Climatology Of Gravity Waves (PACOG)

PACOG是“MS-GWaves”研究单位内的一个项目，该研究单位致力于对重力波进行一般性研究。PACOG专注于大气观测和与模型的比较。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 K，并对循环系统和成分造成剧烈变化。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得到很好的理解。例如，这涉及生成、传播、过滤、耗散以及季节和时间变化。我们打算在区域和全球范围内研究重力波的气候学，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）。并将在再分析数据的基础上，借助相关模拟来解释我们的测量结果。MS-GWaves的最终目的是改进全球模型中使用的重力波参数化。在PACOG中进行的观测应用于MS-GWaves的所有项目，例如，当将本地和区域测量与卫星全球观测（SV项目）进行比较时，或作为3DMSD和GWING项目中建模验证的基准测试。

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.