Combined airborne lidar measurments of moisture transport and cirrus properties: HALO-LIDAR

激光雷达对风、水蒸气、臭氧、气溶胶或云层的测量是许多计划中的Halo任务的关键组成部分。尽管这些飞行任务有不同的科学目标，并使用不同的激光雷达和其他仪器组合，但共同关注温带天气系统和共同依赖激光雷达数据提供了独特的机会，可以制定方法并获得超出个别飞行任务可能取得的科学成果。HALO-LIDAR的目的是通过处理跨越几次HALO任务的一组科学目标来利用这些协同作用，并根据激光雷达和其他仪器的数据组合开发分析物理上相关的量的方法。科学目标以测量输送和通量为中心，特别是对正在发展的北大西洋气旋上游的水蒸气、其暖区卷云特性的测量，以及通过组合成分测量确定相关的关键物理过程。将利用相关项目的模型数据，特别是集合模拟，来量化大气可变性造成的不确定性。HALO-LIDAR将通过基于仪器组合和仔细量化误差和不确定性的附加值数据产品，对天气预报和气候模型进行新的和更好的评估。

Lidar measurements of wind, water vapour, ozone, aerosol or clouds are key components of a significant number of planned HALO missions. Although these missions have differing scientific goals and utilise different combinations of lidars and other instruments, a common focus on extratropical weather systems and the common reliance on lidar data provides unique opportunities to develop methods and obtain scientific results beyond what is possible in the context of the individual missions. The aim of HALO-LIDAR is to exploit these synergies by addressing a subset of scientific goals that span several HALO missions, and to develop methods for analysing physically relevant quantities based on combinations of data from lidars and other instruments. The scientific goals centre around measurements of transport and fluxes, especially of water vapour, upstream of developing North Atlantic cyclones, of cirrus properties in their warm sector, and around the identification of related key physical processes through combinations of constituent measurements. Model data from associated projects, especially ensemble simulations, will be exploited to quantify uncertainties due to atmospheric variability. HALO-LIDAR will enable new and better evaluations of weather forecasting and climate models through added value data products based on combinations of instruments and careful quantification of errors and uncertainties.