Tree-ring

Tree-ring series that showed a 20th-century uptick were given 390 times the weighting of other series, according to a 2005 study by Ross McKitrick, an environmental economist at the University of Guelph.

Hockey-Stick Hooey 2011

Tree-ring series that showed a 20th-century uptick were given 390 times the weighting of other series, according to a 2005 study by Ross McKitrick, an environmental economist at the University of Guelph.

The Contrarians Have Better Data 2011

Tree-ring width in larch trees increases from north to south up to the region of southern taiga (57° N; Table 14.6), then decreases in the high-elevation forest zone of Tuva (51° N).

Direct climate effects on tree growth in the Arctic 2009

Tree-ring chronologies serve as a useful basis for reconstructing natural temperature fluctuations in the high latitudes over millennial intervals, although the degree of reliability needs to be assessed carefully in each application.

Tree rings and past climate in the Arctic 2009

Tree-ring data from sites east of the mountains implies that over the past decades, the climate of this area has become more maritime, and consequently the trees may have suffered stress from surplus moisture rather than drought [51].

Direct climate effects on tree growth in the Arctic 2009

Tree-ring variability in Gmelin larch, Siberian larch, and Scots pine was compared from sites located at different latitudes along the Central Siberian IGBP transect.

Direct climate effects on tree growth in the Arctic 2009

Tree-ring data from the Kheta-Khatanga plain region and the Moyero-Kotui plateau in the eastern part of the Taymir Peninsula indicate climatic conditions more favorable for tree growth around 6 ky BP, as confirmed by increased concentrations of the stable carbon isotope 13C in the annual tree rings [98].

Arctic climate variability prior to 100 years BP 2009

Tree-ring widths increase in response to warm-season temperatures and precipitation/moisture status and have been used to reconstruct climate changes, in many cases for more than 400 years into the past [23].

Historical changes in freshwater ecosystems in the Arctic 2009

Tree-ring data from the Torneträsk area indicate particularly severe climatic conditions between 2.6 and 2 ky BP (600 – 1 BC).

Arctic climate variability prior to 100 years BP 2009

Tree-ring data from Siberian larch, Gmelin larch, Siberian spruce (Picea obovata), and Scots pine from 46 sites located in regions from the forest – steppe zone in the south to the forest – tundra zone in the north were used (Fig. 14.16).

Direct climate effects on tree growth in the Arctic 2009