No signature of extreme solar energetic particle events in high-precision 14C data from the Alaskan tree for 1844–1876 CE | Journal of Space Weather and Space Climate

Topical Issue - Space Climate: Long-term effects of solar variability on the Earth’s environment

Open Access

Figure 1

(a) Measured ¹⁴C dataset of early and late woods (earlywood: diamonds, latewood: circles, whole wood: square). Each data point was measured twice (except for the latewood 1846 CE), and the data are expressed as the weighted average of each measurement. (b) Annual resolution ¹⁴C data series (dots) compared with that reported by a previous study (stars, Brehm et al., 2021).

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