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

SGER：评估从北极卫星探测器产品获取水平热湿传输的新方法

• 批准号: 0105461
• 负责人: Jennifer Francis
• 金额: $ 8.04万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-02-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0105461&HistoricalAwards=false
• 关键词: SGER; Evaluation; New; Method; Retrieve

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.

高纬度地区被认为是地球气候系统中对气候敏感和了解甚少的组成部分。大气中热量和水分的输送是北极与全球环流系统之间的主要联系，但由于缺乏北极中部的常规数据，人们对能量和水分进入该区域后的数量、路径和相互作用知之甚少。新的数据集提供了一个令人兴奋的机会，通过提供20年来（100公里）2空间分辨率的大气和表面数量的测量来观察北极气候。该项目将利用最近从卫星获得的独特产品的观测结果，评价一种新的方法，以计算水平输送的感热和湿气的汇合所造成的大气加热。初步计算表明，在20年的观测记录中，这些数量确实发生了重大变化，北极不同地区的幅度和迹象各不相同。