High Resolution Infrared Radiometry of the Arctic Sky from a Ship-based Platform

从船基平台对北极天空进行高分辨率红外辐射测量

• 批准号: 9712873
• 负责人: Steven Neshyba
• 金额: $ 1.89万
• 依托单位: University of Puget Sound
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-15 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9712873&HistoricalAwards=false
• 关键词: Resolution; Infrared; Radiometry; Arctic; Sky

Deployment of an uplooking infrared radiometer aboard the USCGS Polar Star "Cruise of Opportunity" in June-July 1997 is proposed. The field objective is to record downwelling longwave radiances from the arctic sky using a high-resolution interferometer. Temperature-controlled blackbody sources coupled to the interferometer provide absolute calibration of the downwelling radiance (Watts m-2 cm Sr-1). Spectra will be recorded at several zenith angles in order to assess the vertical distribution of trace gases, temperature, and water vapor of the boundary layer. The specific analysis goals are to extract (i) cloud microphysical proprieties (cloud emissivity and equivalent particle size), (ii) total column concentrations of infrared-active trace gases, and (iii)boundary layer vertical profiles of temperature and water vapor concentration. These data will later be analyzed for information relevant to the radiative balance and chemistry of the arctic atmosphere.

建议于1997年6月至7月在美国海岸警卫队极地星星“机遇号巡航”上部署一个上传红外辐射计。 现场的目标是使用高分辨率干涉仪记录来自北极天空的下沉长波辐射。 耦合到干涉仪的温控黑体源提供下降辐射（Watts m-2 cm Sr-1）的绝对校准。 将在几个天顶角记录光谱，以评估边界层的痕量气体、温度和水汽的垂直分布。具体的分析目标是提取（i）云的微物理特性（云的发射率和等效颗粒大小），（ii）红外活性痕量气体的总柱浓度，和（iii）温度和水蒸气浓度的边界层垂直廓线。 这些数据稍后将被分析，以获得与北极大气的辐射平衡和化学有关的信息。