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

该项目将分析14C数据，研究太阳活动的长期变化，因为它与陆地气候有关。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，而辐射则推动碳循环。这个项目将研究测量和理论。对年代际或双代际样品的测量无法观测到太阳活动的高频变化，如11年周期或太阳耀斑产生的14C等短暂现象。因此，决定测量年轮中的碳同位素。该项目将测量195个样本，以完成奥尔特和沃尔夫太阳极小期以及其间的中世纪太阳极大期的研究。将进行额外的测量以进一步解决蒙德极小期期间有关施瓦贝周期的问题。理论工作将集中于分析新数据和继续研究来自1万年数据库的数据。为了更好地了解太阳在调节14C的产生和气候强迫方面的作用，将努力解开太阳风和辐射对14C变化的影响。计划包括对14c气候相关性的进一步研究

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.***