DOI: 10.5194/cp-8-1059-2012
Scopus记录号: 2-s2.0-84873810535
论文题名: Impact of postglacial warming on borehole reconstructions of last millennium temperatures
作者: Rath V. ; Rouco J.F.G. ; Goosse H.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2012
卷: 8, 期: 3 起始页码: 1059
结束页码: 1066
语种: 英语
Scopus关键词: borehole
; climate modeling
; climate variation
; data inversion
; Last Glacial Maximum
; paleoclimate
; Postglacial
; reconstruction
; surface temperature
; temperature profile
; warming
英文摘要: The investigation of observed borehole temperatures has proved to be a valuable tool for the reconstruction of ground surface temperature histories. However, there are still many open questions concerning the significance and accuracy of the reconstructions from these data. In particular, the temperature signal of the warming after the Last Glacial Maximum is still present in borehole temperature profiles. It is shown here that this signal also influences the relatively shallow boreholes used in current paleoclimate inversions to estimate temperature changes in the last centuries by producing errors in the determination of the steady state geothermal gradient. However, the impact on estimates of past temperature changes is weaker. For deeper boreholes, the curvature of the long-term signal is significant. A correction based on simple assumptions about glacial-interglacial temperature changes shows promising results, improving the extraction of millennial scale signals. The same procedure may help when comparing observed borehole temperature profiles with the results from numerical climate models. © Author(s) 2012. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49508
Appears in Collections: 气候变化与战略
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Recommended Citation:
Rath V.,Rouco J.F.G.,Goosse H.. Impact of postglacial warming on borehole reconstructions of last millennium temperatures[J]. Climate of the Past,2012-01-01,8(3)