000			02041nab a2200241 4500
003			OSt
005			20231022170820.0
007			cr aa aaaaa
008			231022b |||||||| |||| 00| 0 eng d
100			_aJardine, Phillip E _958766
245			_aProxy reconstruction of ultraviolet B irradiance at the Earth’s surface, and its relationship with solar activity and ozone thickness/
260			_bSage, _c2020.
300			_aVol. 30, issue 1, 2020 ( 155–161 p.).
520			_aSolar ultraviolet-B (UV-B) irradiance that reaches the Earth’s surface acts as a biotic stressor and has the potential to modify ecological and environmental functioning. The challenges of reconstructing ultraviolent (UV) irradiance prior to the satellite era mean that there is uncertainty over long-term surface UV-B patterns, especially in relation to variations in solar activity over centennial and millennial timescales. Here, we reconstruct surface UV-B irradiance over the last 650 years using a novel UV-B proxy based on the chemical signature of pollen grains. We demonstrate a statistically significant positive relationship between the abundance of UV-B absorbing compounds in Pinus pollen and modelled solar UV-B irradiance. These results show that trends in surface UV-B follow the overall solar activity pattern over centennial timescales, and that variations in solar output are the dominant control on surface level UV-B flux, rather than solar modulated changes in ozone thickness. The Pinus biochemical response demonstrated here confirms the potential for solar activity driven surface UV-B variations to impact upon terrestrial biotas and environments over long timescales.
700			_aFraser, Wesley T _958767
700			_aGosling, William D _958768
700			_aRoberts, C Neil _951669
700			_aEastwood, Warren J _958769
700			_aLoma, Barry H _958770
773	0		_012756 _917200 _dLondon: Sage Publication Ltd, 2019. _tHolocene/ _x09596836
856			_uhttps://doi.org/10.1177/0959683619875798
942			_2ddc _cEJR
999			_c15015 _d15015