A
Andreas Kirchhefer
Researcher at University of Tromsø
Publications - 26
Citations - 1328
Andreas Kirchhefer is an academic researcher from University of Tromsø. The author has contributed to research in topics: Climate change & Scots pine. The author has an hindex of 14, co-authored 26 publications receiving 1220 citations. Previous affiliations of Andreas Kirchhefer include Norwegian University of Science and Technology.
Papers
More filters
Journal ArticleDOI
Correction of tree ring stable carbon isotope chronologies for changes in the carbon dioxide content of the atmosphere
Danny McCarroll,Mary Gagen,Neil J. Loader,Iain Robertson,Kevin J. Anchukaitis,Sietse O. Los,Giles H.F. Young,Risto Jalkanen,Andreas Kirchhefer,John S. Waterhouse +9 more
TL;DR: In this paper, the authors proposed a correction procedure that attempts to calculate the δ13C values that would have been obtained under pre-industrial conditions using nonlinear regression, but the magnitude of the adjustment made is restricted by two logical constraints based on the physiological response of trees.
Journal Article
Correction of tree ring stable carbon isotope chronologies for changes in the carbon dioxide content of the atmosphere , Geochimica et Cosmochimica Acta 73, 1539-1547
Danny McCarroll,Mary Gagen,Neil J. Loader,Iain Robertson,Kevin J. Anchukaitis,Sietse O. Los,Giles H.F. Young,Risto Jalkanen,Andreas Kirchhefer,John S. Waterhouse +9 more
TL;DR: In this article, the authors proposed a correction procedure that attempts to calculate the δ13C values that would have been obtained under pre-industrial conditions using nonlinear regression, but the magnitude of the adjustment made is restricted by two logical constraints based on the physiological response of trees.
Journal ArticleDOI
A 1200-year multiproxy record of tree growth and summer temperature at the northern pine forest limit of Europe
Danny McCarroll,Neil J. Loader,Risto Jalkanen,Mary Gagen,Håkan Grudd,Björn E. Gunnarson,Andreas Kirchhefer,Michael Friedrich,Hans W. Linderholm,M. Lindholm,Tatjana Boettger,Sietse O. Los,Sabine Remmele,Yuri M. Kononov,Y. H. Yamazaki,Y. H. Yamazaki,Giles H.F. Young,Eduardo Zorita +17 more
TL;DR: In this paper, the authors combined nine tree growth proxies from four sites, from the west coast of Norway to the Kola Peninsula of NW Russia, providing a well replicated (> 100 annual measurements per year) mean index of tree growth over the last 1200 years that represents the growth of much of the northern pine timberline forests of northern Fennoscandia.
Journal ArticleDOI
Reconstruction of summer temperatures from tree-rings of Scots pine (Pinus sylvestris L.) in coastal northern Norway
TL;DR: In this paper, tree-ring chronologies from Scots pine (Pinus sylvestris L.) were constructed at Forfjorddalen in the Vesteralen archipelago (AD 1358-1992), Stonglandseidet o...
Journal ArticleDOI
A 500-year record of summer near-ground solar radiation from tree-ring stable carbon isotopes
TL;DR: In this paper, the authors used tree-ring stable carbon isotope ratios (d13C) in environments of low moisture stress to calibrate the temperature and cloud cover of pine trees in NW Norway.