S Helama

Affiliations

Natural Resources Institute Finland, Eteläranta 55, 96300, Rovaniemi, Finland.

ORCID: http://orcid.org/0000-0002-9777-3354

Publications (10)

The written history of plant phenology: shaping primary sources for secondary publications.

Die Naturwissenschaften

Avec: Jari Holopainen , Samuli Helama , Henry Väre

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

Nature communications

Avec: J Uusitalo , L Arppe , T Hackman , S Helama , G Kovaltsov , K Mielikäinen , H Mäkinen , P Nöjd , V Palonen , I Usoskin , M Oinonen

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

PloS one

Avec: Markku Oinonen , Teija Alenius , Laura Arppe , Hervé Bocherens , Heli Etu-Sihvola , Samuli Helama , Heli Huhtamaa , Maria Lahtinen , Kristiina Mannermaa , Päivi Onkamo , Jukka Palo , Antti Sajantila , Kati Salo , Tarja Sundell , Santeri Vanhanen , Anna Wessman

Finnish National Phenological Network 1997-2017: from observations to trend detection.

International journal of biometeorology

Avec: Samuli Helama , Anne Tolvanen , Jouni Karhu , Jarmo Poikolainen , Eero Kubin

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

Nature communications

Avec: R J W Brienen , L Caldwell , L Duchesne , S Voelker , J Barichivich , M Baliva , G Ceccantini , A Di Filippo , S Helama , G M Locosselli , L Lopez , G Piovesan , J Schöngart , R Villalba , E Gloor

Plant phenological dataset collated by the Finnish Society of Sciences and Letters.

Ecology

Avec: Jari Holopainen , Samuli Helama , Henry Väre

MD dating: molecular decay (MD) in pinewood as a dating method.

Scientific reports

Avec: J Tintner , B Spangl , M Grabner , S Helama , M Timonen , A J Kirchhefer , F Reinig , D Nievergelt , M Krąpiec , E Smidt

The influence of decision-making in tree ring-based climate reconstructions.

Nature communications

Avec: Ulf Büntgen , Kathy Allen , Kevin J Anchukaitis , Dominique Arseneault , Étienne Boucher , Achim Bräuning , Snigdhansu Chatterjee , Paolo Cherubini , Olga V Churakova Sidorova , Christophe Corona , Fabio Gennaretti , Jussi Grießinger , Sebastian Guillet , Joel Guiot , Björn Gunnarson , Samuli Helama , Philipp Hochreuther , Malcolm K Hughes , Peter Huybers , Alexander V Kirdyanov , Paul J Krusic , Josef Ludescher , Wolfgang J-H Meier , Vladimir S Myglan , Kurt Nicolussi , Clive Oppenheimer , Frederick Reinig , Matthew W Salzer , Kristina Seftigen , Alexander R Stine , Markus Stoffel , Scott St George , Ernesto Tejedor , Aleyda Trevino , Valerie Trouet , Jianglin Wang , Rob Wilson , Bao Yang , Guobao Xu , Jan Esper

A Single-Year Cosmic Ray Event at 5410 BCE Registered in

Geophysical research letters

Avec: F Miyake , I P Panyushkina , A J T Jull , F Adolphi , N Brehm , S Helama , K Kanzawa , T Moriya , R Muscheler , K Nicolussi , M Oinonen , M Salzer , M Takeyama , F Tokanai , L Wacker

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

Climate dynamics

Avec: Samuli Helama , Markus Stoffel , Richard J Hall , Phil D Jones , Laura Arppe , Vladimir V Matskovsky , Mauri Timonen , Pekka Nöjd , Kari Mielikäinen , Markku Oinonen

Réseau de co-auteurs

Samuli Helama 6 collaborations

Jari Holopainen 2 collaborations

Henry Väre 2 collaborations

M Oinonen 2 collaborations

Markku Oinonen 2 collaborations

Laura Arppe 2 collaborations

Markus Stoffel 2 collaborations

J Uusitalo 1 collaboration

L Arppe 1 collaboration

T Hackman 1 collaboration

G Kovaltsov 1 collaboration

K Mielikäinen 1 collaboration

H Mäkinen 1 collaboration

P Nöjd 1 collaboration

V Palonen 1 collaboration

I Usoskin 1 collaboration

Teija Alenius 1 collaboration

Hervé Bocherens 1 collaboration

Heli Etu-Sihvola 1 collaboration

Heli Huhtamaa 1 collaboration

Maria Lahtinen 1 collaboration

Kristiina Mannermaa 1 collaboration

Päivi Onkamo 1 collaboration

Jukka Palo 1 collaboration

Antti Sajantila 1 collaboration

Kati Salo 1 collaboration

Tarja Sundell 1 collaboration

Santeri Vanhanen 1 collaboration

Anna Wessman 1 collaboration

Anne Tolvanen 1 collaboration

Jouni Karhu 1 collaboration

Jarmo Poikolainen 1 collaboration

Eero Kubin 1 collaboration

R J W Brienen 1 collaboration

L Caldwell 1 collaboration

L Duchesne 1 collaboration

S Voelker 1 collaboration

J Barichivich 1 collaboration

M Baliva 1 collaboration

G Ceccantini 1 collaboration

A Di Filippo 1 collaboration

G M Locosselli 1 collaboration

L Lopez 1 collaboration

G Piovesan 1 collaboration

J Schöngart 1 collaboration

R Villalba 1 collaboration

E Gloor 1 collaboration

J Tintner 1 collaboration

B Spangl 1 collaboration

M Grabner 1 collaboration

M Timonen 1 collaboration

A J Kirchhefer 1 collaboration

F Reinig 1 collaboration

D Nievergelt 1 collaboration

M Krąpiec 1 collaboration

E Smidt 1 collaboration

Ulf Büntgen 1 collaboration

Kathy Allen 1 collaboration

Kevin J Anchukaitis 1 collaboration

Dominique Arseneault 1 collaboration

Étienne Boucher 1 collaboration

Achim Bräuning 1 collaboration

Snigdhansu Chatterjee 1 collaboration

Paolo Cherubini 1 collaboration

Olga V Churakova Sidorova 1 collaboration

Christophe Corona 1 collaboration

Fabio Gennaretti 1 collaboration

Jussi Grießinger 1 collaboration

Sebastian Guillet 1 collaboration

Joel Guiot 1 collaboration

Björn Gunnarson 1 collaboration

Philipp Hochreuther 1 collaboration

Malcolm K Hughes 1 collaboration

Peter Huybers 1 collaboration

Alexander V Kirdyanov 1 collaboration

Paul J Krusic 1 collaboration

Josef Ludescher 1 collaboration

Wolfgang J-H Meier 1 collaboration

Vladimir S Myglan 1 collaboration

Kurt Nicolussi 1 collaboration

Clive Oppenheimer 1 collaboration

Frederick Reinig 1 collaboration

Matthew W Salzer 1 collaboration

Kristina Seftigen 1 collaboration

Alexander R Stine 1 collaboration

Scott St George 1 collaboration

Ernesto Tejedor 1 collaboration

Aleyda Trevino 1 collaboration

Valerie Trouet 1 collaboration

Jianglin Wang 1 collaboration

Rob Wilson 1 collaboration

Bao Yang 1 collaboration

Guobao Xu 1 collaboration

Jan Esper 1 collaboration

F Miyake 1 collaboration

I P Panyushkina 1 collaboration

A J T Jull 1 collaboration

F Adolphi 1 collaboration

N Brehm 1 collaboration

K Kanzawa 1 collaboration

T Moriya 1 collaboration

R Muscheler 1 collaboration

K Nicolussi 1 collaboration

M Salzer 1 collaboration

M Takeyama 1 collaboration

F Tokanai 1 collaboration

L Wacker 1 collaboration

Richard J Hall 1 collaboration

Phil D Jones 1 collaboration

Vladimir V Matskovsky 1 collaboration

Mauri Timonen 1 collaboration

Pekka Nöjd 1 collaboration

Kari Mielikäinen 1 collaboration