globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-014-2226-1
Scopus记录号: 2-s2.0-84932193109
论文题名:
Is global warming affecting cave temperatures? Experimental and model data from a paradigmatic case study
作者: Domínguez-Villar D.; Lojen S.; Krklec K.; Baker A.; Fairchild I.J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期:2017-03-04
起始页码: 569
结束页码: 581
语种: 英语
英文关键词: Cave ; Global warming ; Heat conduction ; Postojna ; Temperature
英文摘要: This research focuses on the mechanisms that transfer the variations in surface atmospheric temperature into caves to evaluate whether they record the warming trend of recent decades. As a study case, we use the data from a hall in Postojna Cave (Slovenia), which was monitored from 2009 to 2013. The low-frequency thermal variability of this cave chamber is dominated by the conduction of heat from the surface through the bedrock. We implemented a thermal conduction model that reproduces low-frequency thermal gradients similar to those measured in the cave. At the 37 m depth of this chamber, the model confirms that the bedrock is already recording the local expression of global warming with a delay of 20–25 years, and predicts a cave warming during the coming decades with a mean rate of 0.015 ± 0.004 C year−1. However, because of the transfer of surface atmosphere thermal variability depends on the duration of the oscillations, the thermal anomalies with periods 7–15 years in duration have delay times <10 years at the studied hall. The inter-annual variability of the surface atmospheric temperature is recorded in this cave hall, although due to the different delay and amplitude attenuation that depends on the duration of the anomalies, the cave temperature signal differs significantly from that at the surface. As the depth of the cave is a major factor in thermal conduction, this is a principal control on whether or not a cave has already recorded the onset of global warming. © 2014, Springer-Verlag Berlin Heidelberg.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54072
Appears in Collections:过去全球变化的重建

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作者单位: Centro Nacional de Investigación sobre la Evolución Humana, Paseo Sierra de Atapuerca s/n, Burgos, Spain; School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom; Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, Ljubljana, Slovenia; Department of Soil Science, University of Zagreb, Svetošimunska 25, Zagreb, Croatia; Connected Waters Initiative Research Centre, University of New South Wales, 110 King St. Manly Vale, Sydney, NSW, Australia

Recommended Citation:
Domínguez-Villar D.,Lojen S.,Krklec K.,et al. Is global warming affecting cave temperatures? Experimental and model data from a paradigmatic case study[J]. Climate Dynamics,2015-01-01,45(2017-03-04)
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