Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Keith R Briffa"'
Publikováno v:
PLoS ONE, Vol 8, Iss 7, p e69065 (2013)
It is generally hypothesized that tree growth at the upper treeline is normally controlled by temperature while that at the lower treeline is precipitation limited. However, uniform patterns of inter-annual ring-width variations along altitudinal gra
Externí odkaz:
https://doaj.org/article/c4310abb95e04463998761910e519a4b
Radial growth of Qilian juniper on the Northeast Tibetan Plateau and potential climate associations.
Publikováno v:
PLoS ONE, Vol 8, Iss 11, p e79362 (2013)
There is controversy regarding the limiting climatic factor for tree radial growth at the alpine treeline on the northeastern Tibetan Plateau. In this study, we collected 594 increment cores from 331 trees, grouped within four altitude belts spanning
Externí odkaz:
https://doaj.org/article/970d83dff1534311aee5b4066285cad3
Autor:
Jonathan Barichivich, Keith R. Briffa, Ranga Myneni, Gerard van der Schrier, Wouter Dorigo, Compton J. Tucker, Timothy J. Osborn, Thomas M. Melvin
Publikováno v:
Remote Sensing, Vol 6, Iss 2, Pp 1390-1431 (2014)
Recent warming has stimulated the productivity of boreal and Arctic vegetation by reducing temperature limitations. However, several studies have hypothesized that warming may have also increased moisture limitations because of intensified summer dro
Externí odkaz:
https://doaj.org/article/c1864a6c49a74aca939be0c4051e5207
Internal and external forcing of multidecadal Atlantic climate variability over the past 1,200 years
Autor:
Juerg Luterbacher, Eduardo Zorita, Keith R. Briffa, Fredrik Charpentier Ljungqvist, Timothy J. Osborn, Jianglin Wang, Bao Yang
Publikováno v:
Nature Geoscience. 10:512-517
The North Atlantic experiences climate variability on multidecadal scales, which is sometimes referred to as Atlantic multidecadal variability. However, the relative contributions of external forcing such as changes in solar irradiance or volcanic ac
Publikováno v:
The Holocene. 27:172-177
Tree rings are commonly used proxy data for past climate variability. Probably the simplest practical solution for transforming raw tree-ring data into proxy estimates and retaining information on low-frequency tree-growth forcing is the regional cur
Several late Quaternary studies have recorded cold and disturbed climates centred during the mid-first millennium AD and discussed these conditions under the term ‘Dark Ages Cold Period’ (DACP). A review of 114 palaeoclimate papers indicated that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f723e3900c78822979427af417c6e8d1
https://ueaeprints.uea.ac.uk/id/eprint/62971/
https://ueaeprints.uea.ac.uk/id/eprint/62971/
Tree-ring based paleoclimate reconstructions entail several sequential estimation or processing steps. Consequently, it can be difficult to isolate climatic from non-climatic variability in the raw ring width measurements, estimate the uncertainty as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f09417f0f32c1d2d9bf4b9f09195ac4
https://ueaeprints.uea.ac.uk/id/eprint/63835/
https://ueaeprints.uea.ac.uk/id/eprint/63835/
Autor:
Thomas M. Melvin, Keith R. Briffa
Publikováno v:
Dendrochronologia. 32(1):7-20
This is the first of a two-part description of a new software tool CRUST (Climatic Research Unit Standardisation of Tree-ring data). This program has been designed primarily to allow the convenient, routine application of “Signal-Free Regional Chro
Autor:
Thomas M. Melvin, Keith R. Briffa
Publikováno v:
Dendrochronologia. 32(4):343-356
A number of processing options associated with the use of a “regional curve” to standardise tree-ring measurements and generate a chronology representing changing tree growth over time are discussed. It is shown that failing to use pith offset es
Autor:
Jonathan Barichivich, Keith R. Briffa, Philip Jones, Gerard van der Schrier, Kevin E. Trenberth, Aiguo Dai, Justin Sheffield
Publikováno v:
Nature Climate Change
Nature Climate Change, Nature Publishing Group, 2014, 4 (1), pp.17-22. ⟨10.1038/nclimate2067⟩
Nature Climate Change, 2014, 4 (1), pp.17-22. ⟨10.1038/nclimate2067⟩
Nature Climate Change, Nature Publishing Group, 2014, 4 (1), pp.17-22. ⟨10.1038/nclimate2067⟩
Nature Climate Change, 2014, 4 (1), pp.17-22. ⟨10.1038/nclimate2067⟩
Recent studies have produced conflicting results about the impacts of climate change on drought. In this Perspective, a commonly used drought index and observational data are examined to identify the cause of these discrepancies. The authors indicate