Space Weather: A Geometric Model Applied to Earth-directed LASCO Halo Coronal Mass Ejections (CMEs)

空间天气：应用于地球定向 LASCO 晕日冕物质抛射 (CME) 的几何模型

• 批准号: 0207588
• 负责人: Leon Ofman
• 金额: $ 9.49万
• 依托单位: Catholic University of America
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0207588&HistoricalAwards=false
• 关键词: Space; Weather; Geometric; Model; Applied

An innovative, but relatively simple, model will be applied to solar Coronal Mass Ejection (CME) observations made with the LASCO instrument on board the SOHO spacecraft. Starting with data obtained in 1996, some 150 Earth-directed, or so-called "halo", CMEs will be analyzed using a conical model originally developed by Zhao, Plunkett and Liu. From this model one may, in principal, be able to deduce sizes and transit times of geoeffective CMEs. This information would be extremely useful to Space Weather Forecasters. If the method proves to be effective, a second component of this effort would involve working with Space Weather Forecasters at NOAA's Space Environment Center to develop efficient operational techniques to estimate CME travel times based on sequences of LASCO images.

一个创新但相对简单的模型将应用于SOHO航天器上的LASCO仪器进行的太阳日冕物质抛射（CME）观测。从1996年获得的数据开始，将使用赵、普伦基特和刘最初开发的锥形模型分析大约150个地球导向的日冕物质抛射。原则上，从这个模型可以推断出地球有效日冕物质抛射的大小和穿越时间。这些信息对太空天气预报员非常有用。如果该方法被证明是有效的，该努力的第二个组成部分将涉及与NOAA空间环境中心的空间天气预报员合作，开发有效的操作技术，根据LASCO图像序列估计日冕物质抛射的传播时间。