globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-015-2799-3
Scopus记录号: 2-s2.0-84941335617
论文题名:
Threshold of the volcanic forcing that leads the El Niño-like warming in the last millennium: results from the ERIK simulation
作者: Lim H.-G.; Yeh S.-W.; Kug J.-S.; Park Y.-G.; Park J.-H.; Park R.; Song C.-K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期:2017-11-12
起始页码: 3725
结束页码: 3736
语种: 英语
英文摘要: In order to examine the threshold of the volcanic forcing that leads to the El Niño-like warming, we analyze a millennium ERIK simulation (AD 1000–1850) forced by three external forcings including greenhouse gases, solar forcing and volcanic eruptions using the ECHO-G coupled climate model. It is found that there exists a threshold of the volcanic forcing above 15 W/m2 to lead the El Niño-like warming in the climate model. When the volcanic forcing is above this threshold forcing, then the intensity of the Inter-tropical Convergence Zone (ITCZ) is weakened and its position is shifted to the south. This might be associated with the processes of less evaporation in the subtropical cloudless region by a cooling due to the reduction of net surface shortwave radiation. Concurrently, a weakening of ITCZ is associated with a weakening of the trade winds and the subsequent Bjerknes feedback causes El Niño-like warming. Therefore, El Niño-like warming events can occur when volcanic eruption is above threshold forcing, implying that there exists a certain level of radiative forcing change which is capable of changing the state of tropical Pacific sea surface temperature. The last millennium simulation of Paleoclimate Modeling Intercomparison Project Phase 3 climate models also indicates that there may exist a threshold forcing to lead the El Niño-like warming, which has been also discussed in the present study. © 2015, 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/53696
Appears in Collections:过去全球变化的重建

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作者单位: School of Environmental Science and Engineering, POSTECH, Pohang, South Korea; Department of Marine Sciences and Convergent Technology, Hanyang University, Ansan, South Korea; Physical Oceanography Division, KIOST, Ansan, South Korea; Department of Ocean Sciences, Inha University, Incheon, South Korea; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Department of Climate and Air Quality, National Institute of Environmental Research, Incheon, South Korea

Recommended Citation:
Lim H.-G.,Yeh S.-W.,Kug J.-S.,et al. Threshold of the volcanic forcing that leads the El Niño-like warming in the last millennium: results from the ERIK simulation[J]. Climate Dynamics,2016-01-01,46(2017-11-12)
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