Solar Modulation of Atmospheric 14C Production (Solar Wind, Flares, Irradiance and Climate Change)

大气 14C 产生的太阳能调节（太阳风、耀斑、辐照度和气候变化）

• 批准号: 9520135
• 负责人: Paul Damon
• 金额: $ 31.69万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-01-15 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9520135&HistoricalAwards=false
• 关键词: Solar; Modulation; Atmospheric; 14C; Production

This project will analyze 14C data to study long term changes in solar activity, as it relates to terrestrial climate. There are two pertinent components of solap activity: the solar wind and irradiance. The solar wind modulates the production of 14C and irradiance forces the carbon cycle. This project will investigate both measurements and theory. Measurement of decadal or bidecadal samples prevents observation of high frequency changes in solar activity such as the 11-year cycle or short-lived phenomena such as 14C production by solar flares. Hence, it was decided to measure the C isotopes in annual tree rings. The project will measure 195 samples to complete work on the Oort and Wolf Solar Minima and the intervening Medieval Solar Maximum. Additional measurements would be made to further resolve questions concerning the Schwabe cycle during the Maunder Minimum. Theoretical work would concentrate on analysis of the new data and continued study of data from the 10,000 year data bank. Efforts would be made to deconvolute the solar wind and irradiance components of 14C variance in order to achieve a better understanding of the Sun's role in modulating the production of 14C and forcing of climate. Plans include further study of the 14C-climate correlation.***

该项目将分析14C数据，以研究太阳活动的长期变化，因为它与地球气候有关。太阳活动有两个相关的组成部分：太阳风和辐照度。太阳风调节14C的产生，辐射迫使碳循环。这个项目将对测量和理论进行研究。测量十年或双年样本可以防止观测到太阳活动的高频变化，如11年一次的周期或短暂的现象，如太阳耀斑产生的14C。因此，决定测量树木年轮中的碳同位素。该项目将测量195个样本，以完成奥尔特和沃尔夫太阳迷你岛和中间的中世纪太阳最大值的工作。将采取更多措施，以进一步解决有关蒙德极小期期间的施瓦贝循环的问题。理论工作将集中于对新数据的分析和对10000年数据库数据的继续研究。将努力消除14C变化的太阳风和辐照度分量，以便更好地了解太阳在调节14C的产生和气候强迫方面的作用。计划包括进一步研究14C-气候相关性。*