On Understanding the Latitudinal and Longitudinal Differences in Polar Mesosphere Summer Echoes

关于极地中间层夏季回波的纬度和经度差异的认识

• 批准号: 0097275
• 负责人: Michael Kelley
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-02-15 至 2005-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0097275&HistoricalAwards=false
• 关键词: Understanding; Latitudinal; Longitudinal; Differences; Polar

This award supports the study of the phenomenon of polar mesosphere summer echoes (PMSE) through comparison of meteor radar measurements from Resolute Bay and Svalbard with additional MF radar measurements from stations located in Alaska and three radars located in the European sector at 78 N, 69 N, and 68 N latitudes. The mesopause winds, echo power strengths, and mesopause temperature estimates derived from these radar measurements at both stations would be compared for simultaneous operations. The primary motivation for this research is to examine the question as to whether cold mesopause temperatures are the only factor that underlies the production of these echoes. Current preliminary evidence suggests that latitudinal and longitudinal differences in mesopause water vapor composition might also be a factor. These measurements would be supplemented with studies related to observations obtained in the Antarctica at McMurdo and at the Peruvian Machu Picchu site (62 S, 58 W).

该合同支持对极地中间层夏季回波（PMSE）现象的研究，通过比较来自雷索特湾和斯瓦尔巴群岛的流星雷达测量数据，以及来自阿拉斯加站点的额外中频雷达测量数据，以及位于欧洲地区78北纬、69北纬和68北纬的三个雷达。将在同时操作时比较两个站点的这些雷达测量得到的中间层顶风、回波功率强度和中间层顶温度估计。这项研究的主要动机是研究寒冷的中顶温度是否是产生这些回声的唯一因素。目前的初步证据表明，中流层水汽组成的纬向和纵向差异也可能是一个因素。这些测量将以与在南极洲麦克默多和秘鲁马丘比丘遗址（南经62度，西经58度）获得的观测结果有关的研究加以补充。