Holocene climatic change in Swedish Lapland inferred from an oxygen-isotope record of lacustrine biogenic silica. Shemesh, A., Rosqvist, G., Rietti-Shati, M., Rubensdotter, L., Bigler, C., Yam, R., & Karlén, W. The Holocene, 11(4):447–454, May, 2001. 00095
Holocene climatic change in Swedish Lapland inferred from an oxygen-isotope record of lacustrine biogenic silica [link]Paper  doi  abstract   bibtex   
Holocene climatic variability was studied in a 9500-year lake-sediment sequence from the Abisko region in Swedish Lapland, using the oxygen-isotope ratio in diatom biogenic silica (d18Osi). Oxygen-and hydrogen-isotope ratios of waters from the Abisko area suggest that in this region the evaporative flux is small and the isotopic composition of most lakes reflects that of the local precipitation. The hydrological setting of the region and sensitivity analysis of isotopic response to changing climatic parameters such as humidity, inflow and evaporation show that the downcore diatom d18Osi record is primarily controlled by changes in the summer isotopic composition of the lake water. The overall 3.5‰ depletion in d18Osi since the early Holocene is interpreted as an increase in the influence of the Arctic polar continental air mass that carries depleted precipitation. We estimate that this change is associated with a 2.5–4°C cooling that has occurred since the early Holocene. In general, the diatom d18Osi record resembles the average annual air temperature reconstructed for the Greenland ice core GISP2, especially during the past 4000 years, with a pronounced cooling starting at 2000 years BP.
@article{shemesh_holocene_2001,
	title = {Holocene climatic change in {Swedish} {Lapland} inferred from an oxygen-isotope                 record of lacustrine biogenic silica},
	volume = {11},
	issn = {0959-6836},
	url = {http://journals.sagepub.com/doi/abs/10.1191/095968301678302887},
	doi = {10.1191/095968301678302887},
	abstract = {Holocene climatic variability was studied in a 9500-year lake-sediment sequence from                 the Abisko region in Swedish Lapland, using the oxygen-isotope ratio in diatom                 biogenic silica (d18Osi). Oxygen-and hydrogen-isotope ratios                 of waters from the Abisko area suggest that in this region the evaporative flux is                 small and the isotopic composition of most lakes reflects that of the local                 precipitation. The hydrological setting of the region and sensitivity analysis of                 isotopic response to changing climatic parameters such as humidity, inflow and                 evaporation show that the downcore diatom d18Osi record is                 primarily controlled by changes in the summer isotopic composition of the lake                 water. The overall 3.5‰ depletion in d18Osi since                 the early Holocene is interpreted as an increase in the influence of the Arctic                 polar continental air mass that carries depleted precipitation. We estimate that                 this change is associated with a 2.5–4°C cooling that has occurred                 since the early Holocene. In general, the diatom d18Osi record                 resembles the average annual air temperature reconstructed for the Greenland ice                 core GISP2, especially during the past 4000 years, with a pronounced cooling                 starting at 2000 years BP.},
	language = {en},
	number = {4},
	urldate = {2017-02-07},
	journal = {The Holocene},
	author = {Shemesh, Aldo and Rosqvist, Gunhild and Rietti-Shati, Miri and Rubensdotter, Lena and Bigler, Christian and Yam, Ruth and Karlén, Wibjörn},
	month = may,
	year = {2001},
	note = {00095},
	keywords = {\#nosource, Holocene, Scandinavia, biogenic silica, climatic change, diatoms, lake sediment, oxygen-isotope ratio, stable isotopes},
	pages = {447--454},
}

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