Collaborative Research: Longwave Radiation Processes and Surface Energy Budget on the Antarctic Plateau

合作研究：南极高原的长波辐射过程和表面能量收支

• 批准号: 0540090
• 负责人: Stephen Warren
• 金额: $ 34万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-03-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0540090&HistoricalAwards=false
• 关键词: Collaborative; Research; Longwave; Radiation; Processes

This work will continue the analyses of several aspects of snow spectral emissivity andcloud processes, and will be extended to analyze the complete surface energy budget and to makecomparisons with an antarctic mesoscale atmospheric model. The work is based on a year-long field experiment, the South Pole Atmospheric Radiation and Cloud Lidar Experiment (SPARCLE), carried out during 2001 at South Pole Station. The two primary efforts will be 1) determining monthly values of shortwave and longwave radiation fluxes, sensible heat, latent heat, and subsurface heat flux, in order to quantify uncertainties and defining the accuracy to which the energy budget can be closed, and 2) comparing predictions of the Polar Mesoscale Model (PMM5) to the observed surface energy budget components and clouds, and diagnosing causes of any discrepancies.The atmosphere over the Antarctic Plateau plays a unique role in the global climate system. It is the coldest and driest atmosphere on earth, with radiation processes dominating both the surface and the top-of-atmosphere energy budgets. When spectrally resolved, longwave radiation is extremely useful for remote sensing of atmospheric and surface properties, particularly in the polar winter. The analysis products are expected to stimulate and support research in other areas, including remote sensing, climate modeling, and weather forecasting in Antarctica for potential year-round logistical operations. The data analysis projects proposed here will also provide data from the Antarctic Plateau useful in constraining and testing general circulation models.

这项工作将继续分析雪光谱发射率和云过程的几个方面，并将扩展到分析完整的地表能量收支，并与南极中尺度大气模式进行比较。这项工作是基于2001年在南极站进行的为期一年的实地试验，即南极大气辐射和云激光雷达实验（SPARCLE）。两项主要工作将是：1)确定短波和长波辐射通量、感热、潜热和地下热通量的月值，以便量化不确定性并确定能量收支可以接近的精度；2)将极地中尺度模式（PMM5）的预测与观测到的地面能量收支分量和云进行比较，并诊断任何差异的原因。南极高原的大气在全球气候系统中起着独特的作用。它是地球上最冷、最干燥的大气层，辐射过程主导着地表和大气层顶部的能量收支。在光谱分解后，长波辐射对遥感大气和地表特性非常有用，特别是在极地冬季。这些分析产品预计将刺激和支持其他领域的研究，包括遥感、气候模型和南极洲的天气预报，以实现潜在的全年后勤运作。这里提出的数据分析项目还将提供来自南极高原的数据，这些数据对约束和测试一般环流模式很有用。