Measurements of Microwave Radiation as a Proxy for Solar Irradiance

作为太阳辐照度代理的微波辐射测量

• 批准号: 9123150
• 负责人: Mukul Kundu
• 金额: $ 3.53万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-15 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9123150&HistoricalAwards=false
• 关键词: Measurements; Microwave; Radiation; Proxy; Solar

9123150 Kundu This project will determine the frequency of maximum correlation of the solar microwave flux with the total solar irradiance, and to obtain statistical evidence regarding the sources of the correlation. The goals are to overcome some of the failure of the 2800 MHz microwave flux to provide adequate proxy data for irradiance measurements, and to use the additional information in multi-frequency data to reveal the physical reasons for the presence or absence of certain correlations. Using the solar flux data at 1000, 2000, 3750 and 9400 MHz from Toyokawa Observatory, along with the 2800 MHz flux data from Ottawa, the PI will correlate the microwave observations with irradiance measurements obtained by The Active Cavity Radiometer Irradiance Monitor (ACRIM) aboard the Solar Maximum Mission (SMM). The project will model the microwave flux spectrum in the 1000-9400 MHz range in order to extract its principal (sunspot, coronal and chromospheric) components. Using the known associations of these spectral components with optical observations, the PI will obtain their relative normalizations so that the components may be identified from the microwave measurements alone. Finally, the PI will obtain the optimum functional relationships by which the microwave flux spectrum can be used as a proxy for solar irradiance. ***

9123150 Kundu这个项目将确定太阳微波通量与总太阳辐照度的最大相关性的频率，并获得有关相关源的统计证据。 目标是克服2800 MHz微波通量的某些故障，以提供足够的固定式测量的代理数据，并在多频率数据中使用其他信息来揭示存在或不存在某些相关性的物理原因。 使用来自Toyokawa天文台的1000、2000、3750和9400 MHz的太阳能数据，以及来自渥太华的2800 MHz磁通数据，PI将将微波炉观测与通过主动腔仪辐射仪（Acrim）As solar The Solar Migiss（Solar Mission（Smm）获得的Active Vacity Facity radience radiance Monitor（Acrim）获得的辐照度测量相关联。 该项目将在1000-9400 MHz范围内建模微波通量光谱，以提取其主（Sunspot，Coronal和Chomospheric）组件。 使用这些光谱成分与光学观测的已知关联，PI将获得其相对正常化，以便仅从微波测量值中识别成分。 最后，PI将获得最佳功能关系，通过该关系，微波通量光谱可以用作太阳辐照度的代理。 ***