Helama S - Search Results

1

Arctic moistening provides negative feedbacks to riparian plants.

Helama S, Arppe L, Mielikäinen K, Oinonen M. Helama S, et al. Glob Chang Biol. 2018 Jun;24(6):2691-2707. doi: 10.1111/gcb.14058. Epub 2018 Feb 13. Glob Chang Biol. 2018. PMID: 29436149

2

Tree height strongly affects estimates of water-use efficiency responses to climate and CO₂ using isotopes.

Brienen RJW, Gloor E, Clerici S, Newton R, Arppe L, Boom A, Bottrell S, Callaghan M, Heaton T, Helama S, Helle G, Leng MJ, Mielikäinen K, Oinonen M, Timonen M. Brienen RJW, et al. Among authors: helama s. Nat Commun. 2017 Aug 18;8(1):288. doi: 10.1038/s41467-017-00225-z. Nat Commun. 2017. PMID: 28819277 Free PMC article.

3

Volcanic dust veils from sixth century tree-ring isotopes linked to reduced irradiance, primary production and human health.

Helama S, Arppe L, Uusitalo J, Holopainen J, Mäkelä HM, Mäkinen H, Mielikäinen K, Nöjd P, Sutinen R, Taavitsainen JP, Timonen M, Oinonen M. Helama S, et al. Sci Rep. 2018 Jan 22;8(1):1339. doi: 10.1038/s41598-018-19760-w. Sci Rep. 2018. PMID: 29358711 Free PMC article.

4

Solar superstorm of AD 774 recorded subannually by Arctic tree rings.

Uusitalo J, Arppe L, Hackman T, Helama S, Kovaltsov G, Mielikäinen K, Mäkinen H, Nöjd P, Palonen V, Usoskin I, Oinonen M. Uusitalo J, et al. Among authors: helama s. Nat Commun. 2018 Aug 28;9(1):3495. doi: 10.1038/s41467-018-05883-1. Nat Commun. 2018. PMID: 30154404 Free PMC article.

5

Author Correction: Solar superstorm of AD 774 recorded subannually by Arctic tree rings.

Uusitalo J, Arppe L, Hackman T, Helama S, Kovaltsov G, Mielikäinen K, Mäkinen H, Nöjd P, Palonen V, Usoskin I, Oinonen M. Uusitalo J, et al. Among authors: helama s. Nat Commun. 2019 Mar 15;10(1):1292. doi: 10.1038/s41467-019-09214-w. Nat Commun. 2019. PMID: 30874555 Free PMC article.

6

Buried in water, burdened by nature-Resilience carried the Iron Age people through Fimbulvinter.

Oinonen M, Alenius T, Arppe L, Bocherens H, Etu-Sihvola H, Helama S, Huhtamaa H, Lahtinen M, Mannermaa K, Onkamo P, Palo J, Sajantila A, Salo K, Sundell T, Vanhanen S, Wessman A. Oinonen M, et al. Among authors: helama s. PLoS One. 2020 Apr 21;15(4):e0231787. doi: 10.1371/journal.pone.0231787. eCollection 2020. PLoS One. 2020. PMID: 32315354 Free PMC article.

7

A Single-Year Cosmic Ray Event at 5410 BCE Registered in ¹⁴C of Tree Rings.

Miyake F, Panyushkina IP, Jull AJT, Adolphi F, Brehm N, Helama S, Kanzawa K, Moriya T, Muscheler R, Nicolussi K, Oinonen M, Salzer M, Takeyama M, Tokanai F, Wacker L. Miyake F, et al. Among authors: helama s. Geophys Res Lett. 2021 Jun 16;48(11):e2021GL093419. doi: 10.1029/2021GL093419. Epub 2021 Jun 9. Geophys Res Lett. 2021. PMID: 34433990 Free PMC article.

8

Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene.

Helama S, Stoffel M, Hall RJ, Jones PD, Arppe L, Matskovsky VV, Timonen M, Nöjd P, Mielikäinen K, Oinonen M. Helama S, et al. Clim Dyn. 2021;56(11-12):3817-3833. doi: 10.1007/s00382-021-05669-0. Epub 2021 Feb 6. Clim Dyn. 2021. PMID: 34776646 Free PMC article.

9

Oak decline analyzed using intraannual radial growth indices, δ(13)C series and climate data from a rural hemiboreal landscape in southwesternmost Finland.

Helama S, Läänelaid A, Raisio J, Mäkelä HM, Hilasvuori E, Jungner H, Sonninen E. Helama S, et al. Environ Monit Assess. 2014 Aug;186(8):4697-708. doi: 10.1007/s10661-014-3731-8. Epub 2014 Apr 12. Environ Monit Assess. 2014. PMID: 24729178

10

Forest carbon sink neutralized by pervasive growth-lifespan trade-offs.

Brienen RJW, Caldwell L, Duchesne L, Voelker S, Barichivich J, Baliva M, Ceccantini G, Di Filippo A, Helama S, Locosselli GM, Lopez L, Piovesan G, Schöngart J, Villalba R, Gloor E. Brienen RJW, et al. Among authors: helama s. Nat Commun. 2020 Sep 8;11(1):4241. doi: 10.1038/s41467-020-17966-z. Nat Commun. 2020. PMID: 32901006 Free PMC article.

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