CEDAR: A Study of the Small-Scale Structure of PMSE Over Sweden Using Coherent Radar Imaging

CEDAR：使用相干雷达成像研究瑞典上空 PMSE 的小尺度结构

• 批准号: 9908616
• 负责人: Robert Palmer
• 金额: $ 12万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-15 至 2003-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908616&HistoricalAwards=false
• 关键词: CEDAR; Study; Small; Scale; Structure

Palmer, RobertATM9908616absThe investigators will study the reflectivity structure of polar mesosphere summer echoes (PMSE) and its relation to the wind field. PMSE have been put forth as a possible precursor of global climate change due to their possible connection to anthropogenic modification of the atmosphere. The study will be conducted through a collaboration between the U. of Nebraska and the Atmospheric Research Programme of the Swedish Institute of Space Physics, which operates a mesosphere-stratosphere-troposphere radar in Kiruna Sweden. The radar's six independent receiving channels allow the implementation of coherent imaging techniques to create almost instantaneous pictures of the reflectivity structure of the atmosphere. The images of PMSE structure will be compared and contrasted to the three-dimensional wind field measurements obtained using spaced antenna techniques. The vertical component of the wind field is believed to be important in the creation of PMSE due to the expansional cooling effects of rising air.

研究人员将研究极地中层夏季回波（PMSE）的反射率结构及其与风场的关系。 PMSE被认为是全球气候变化的一种可能的前兆，因为它们可能与人类对大气的改变有关。 这项研究将通过与美国政府的合作进行。该方案在瑞典基律纳运行着一个中间层-平流层-对流层雷达。 该雷达的六个独立接收通道允许实施相干成像技术，以创建大气反射率结构的几乎瞬时图像。PMSE结构的图像将与使用间隔天线技术获得的三维风场测量结果进行比较和对比。 风场的垂直分量被认为是重要的PMSE的创建由于上升空气的膨胀冷却效应。