Impact of topography on atmospheric flow: implications for weather and climate

我提出的研究计划的目标是提高我们对地形对天气和气候影响的理解。人们对山脉感兴趣的原因有很多：它们作为大气流动的屏障，可以影响其附近以及下游的天气和气候；落在山坡上的降水为附近的低海拔社区和生态系统提供了宝贵的水源；它们的冰川是过去气候变化的重要档案。进行此类研究的挑战之一是，研究的地区偏远且人口稀少。因此，数据收集是一项挑战，我们对大气流动与地形相互作用过程的了解也因此有限。因此，我的研究计划的一个关键和独特的组成部分涉及在山区进行的数据收集活动，例如育空地区的圣伊莱亚斯山脉、格陵兰岛和喜马拉雅山脉，我的小组在那里对地形对大气流动的影响进行了现场观测。我们建议将这些数据与其他仪器和古气候数据集以及数值模型一起使用，以进一步了解地形对天气和气候的影响。

The objectives of my proposed research program are to improve our understanding of the influence that topography has on weather and climate. Mountains are of interest for a variety of reasons: they act as a barrier to atmospheric flow that can impact the weather and climate in their immediate vicinity as well as downstream; the precipitation that falls on their slopes serves as a valuable source of water for nearby lower-elevation communities and ecosystems; and their glaciers serve as important archives of past climate variability. One of the challenges to doing such research is that the regions of interest are remote and sparsely populated. As a result, data collection is a challenge and our knowledge of the processes by which atmospheric flow interacts with topography is therefore limited. A crucial and unique component of my research program therefore involves on-going data collection activities in mountainous regions, such as the Saint Elias Range in the Yukon Territory, Greenland and the Himalaya, where my group has made in-situ observations as to the impact that topography has on atmospheric flow. We propose to use this data along with other instrumental and paleoclimate datasets as well as numerical models to further our understanding of the impact that topography has on weather and climate.