SGER: Evaluation of a New Method to Retrieve Horizontal Heat and Moisture Transport from Satellite Sounder Products in the Arctic

高纬度地区被认为是地球气候系统中对气候敏感且知之甚少的组成部分。大气中的热量和水汽输送构成了北极和全球循环系统之间的主要联系，但由于北极中部缺乏常规数据，人们对能量和水汽进入该区域后的数量、路径和相互作用知之甚少。新的数据集为观察北极气候提供了一个令人兴奋的机会，它提供了20年来以(100公里)2空间分辨率测量大气和地表数量。该项目将利用独特的和最近可用的卫星衍生产品的观测结果，评估一种计算水平输送的显热和水汽汇聚所引起的大气加热的新方法。初步计算表明，在20年的观测记录中，这些数量确实发生了显著变化，北极不同地区的变化幅度和迹象各不相同。

High latitudes are recognized as climatically sensitive and poorly understood components of the Earth's climate system. The transport of heat and moisture in the atmosphere constitutes the primary link between the Arctic and the global circulation system, yet owing to the dearth of conventional data in the central Arctic, little is known about the quantities, pathways, and interactions of energy and moisture after they enter the region. New data sets offer an exciting opportunity to observe the Arctic climate by providing measurements of atmospheric and surface quantities at (100-km)2 spatial resolution for two decades. This project will exploit observations from unique and recently available satellite-derived products to evaluate a new method to compute atmospheric heating caused by the convergence of horizontally transported sensible heat and moisture. Preliminary calculations suggest that these quantities have, indeed, changed significantly during the 20-year record of observations, with varying magnitudes and signs in different regions of the Arctic.