Figure 2 | Scientific Reports

Figure 2

From: Pollen and spores as biological recorders of past ultraviolet irradiance

Figure 2

Solar irradiance and pollen chemistry.

(a) Modelled September total solar irradiance at 6°N32. (b) UAC concentrations in Poaceae pollen from Lake Bosumtwi. Grey circles are sample means, error bars are one standard deviation. Purple lines are GAM smoothers, based on the sample means. Solid lines show the model fit, dashed lines are 95% confidence intervals. (c) Proportion of Poaceae pollen in each sample.

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