Holmström, Lasse and Pasanen, Leena 2017. Statistical Scale Space Methods. International Statistical Review, Vol. 85, Issue. 1, p. 1.
Shala, Shyhrete Helmens, Karin F Luoto, Tomi P Salonen, J Sakari Väliranta, Minna and Weckström, Jan 2017. Comparison of quantitative Holocene temperature reconstructions using multiple proxies from a northern boreal lake. The Holocene, p. 095968361770844.
Luoto, Tomi P. and Nevalainen, Liisa 2017. Quantifying climate changes of the Common Era for Finland. Climate Dynamics, Vol. 49, Issue. 7-8, p. 2557.
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Klouch, Khadidja Z. Schmidt, Sabine Andrieux-Loyer, Françoise Le Gac, Mickaël Hervio-Heath, Dominique Qui-Minet, Zujaila N. Quéré, Julien Bigeard, Estelle Guillou, Laure Siano, Raffaele and Laanbroek, Riks 2016. Historical records from dated sediment cores reveal the multidecadal dynamic of the toxic dinoflagellateAlexandrium minutumin the Bay of Brest (France). FEMS Microbiology Ecology, Vol. 92, Issue. 7, p. fiw101.
Sienkiewicz, Elwira 2016. Post-glacial acidification of two alpine lakes (Sudetes Mts., SW Poland), as inferred from diatom analyses. Acta Palaeobotanica, Vol. 56, Issue. 1,
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Ojala, Antti E.K. Kosonen, Emilia Weckström, Jan Korkonen, Sanna and Korhola, Atte 2013. Seasonal formation of clastic-biogenic varves: the potential for palaeoenvironmental interpretations. GFF, Vol. 135, Issue. 3-4, p. 237.
Luoto, Tomi P. 2013. How cold was the Little Ice Age? A proxy-based reconstruction from Finland applying modern analogues of fossil midge assemblages. Environmental Earth Sciences, Vol. 68, Issue. 5, p. 1321.
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Holmström, Lasse 2010. BSiZer. Wiley Interdisciplinary Reviews: Computational Statistics, Vol. 2, Issue. 5, p. 526.
HELMENS, KARIN F. and ENGELS, STEFAN 2010. Ice-free conditions in eastern Fennoscandia during early Marine Isotope Stage 3: lacustrine records. Boreas, Vol. 39, Issue. 2, p. 399.
Establishing natural climate variability becomes particularly important in remote polar regions, especially when considering questions regarding higher than average warming. We present a high-resolution record of temperature variability for the past 800 yr based on sedimentary diatoms from a treeline lake in Finnish Lapland. The BSiZer multiscale smoothing technique is applied to the data to identify significant features in the record at different temporal levels. The overall reconstruction shows relatively large multi-centennial temperature variability with a total range of about 0.6–0.8°C. At millennial scales, the temperatures exhibit a statistically significant long-term cooling trend prior to industrialization (ΔT = −0.03°C/century). At the centennial timescale, three warm time intervals were identified around AD 1200–1300 (terminal phase of the Medieval Warm Period, MWP), 1380–1550 and from 1920 until the present. Pronounced coolness occurred between AD 1600 and 1920, indicative of the Little Ice Age (LIA). At the decadal level, certain shorter-term climate excursions were revealed. The warmest ∼10–30 yr, non-overlapping periods occurred in AD 1220–1250, 1470–1500 and 1970–2000, respectively. The classic events of MWP and LIA are evident in our record, as is also the 20th century warming.
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