EnSRF for climate reconstructions
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منابع مشابه
Estimating 750 years of temperature variations and uncertainties in the Pyrenees by tree-ring reconstructions and climate simulations
Past temperature variations are usually inferred from proxy data or estimated using general circulation models. Comparisons between climate estimations derived from proxy records and from model simulations help to better understand mechanisms driving climate variations, and also offer the possibility to identify deficiencies in both approaches. This paper presents regional temperature reconstru...
متن کاملSeparating forced from chaotic climate variability over the past millennium
Reconstructions of past climate show notable temperature variability over the past millennium, with relatively warm conditions during the Medieval Climate Anomaly (MCA) and a relatively cold Little Ice Age (LIA). Multimodel simulations of the past millennium are used together with a wide range of reconstructions of Northern Hemispheric mean annual temperature to separate climate variability fro...
متن کاملEvaluation of Northern Hemisphere natural climate variability in multiple temperature reconstructions and global climate model simulations
The detection of anthropogenic climate change in observations and the validation of climate models both rely on understanding natural climate variability. To evaluate internal climate variability, we apply spectral analysis to time series of surface air temperature (SAT) from nine coupled general circulation model (GCM) simulations, three recent global paleotemperature reconstructions, and Nort...
متن کاملStrengths and Weaknesses of Quantitative Climate Reconstructions Based on Late-Quaternary Biological Proxies
The importance of reconstructing past environments quantitatively in palaeoecology is reviewed by showing that many ecological questions asked of palaeoecological data commonly involve the reconstructions of past environment. Three basic approaches to reconstructing past climate from palaeoecological data are outlined and discussed in terms of their assumptions, strengths, and weaknesses. These...
متن کاملAre reconstructed pre-instrumental hemispheric temperatures consistent with instrumental hemispheric temperatures?
[1] Reconstructions of Northern Hemisphere near-surface temperatures from climate ‘proxy’ data such as tree rings, ice cores, and corals, suggest that late 20th century Northern Hemisphere mean warmth is anomalous in the context of the past several centuries and likely at least the past two millennia. Though substantial uncertainties in the paleoclimate reconstructions exist, these findings add...
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تاریخ انتشار 2011