On the identification of a Pliocene time slice for data-model comparison.
On the identification of a Pliocene time slice for data-model comparison.
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DOI：
10.1098/rsta.2012.0515
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发表时间：
2013-10-28
期刊：
影响因子：
--
通讯作者：
Valdes PJ
中科院分区：
文献类型：
--
作者：
Haywood AM;Dolan AM;Pickering SJ;Dowsett HJ;McClymont EL;Prescott CL;Salzmann U;Hill DJ;Hunter SJ;Lunt DJ;Pope JO;Valdes PJ
利用地质替代物和气候模型研究了上新世中期暖期(mPWP：3.264-3.025 Ma BP)的特征。虽然模型和数据之间是一致的，但区域气候的细节有所不同。规定的强制作用和替代数据中的不确定性限制了该间隔在了解比当前气候变暖的动态或评估模型方面的效用。这种不确定性在一定程度上来自时间片的重建，而不是时间片的重建，在时间片上，气候模型所需的强制可以得到更充分的限制。在这里，我们描述了确定上新世环境重建时间片(S)的原理和方法。以3.205 Ma BP(3.204-3.207 Ma BP)为中心的时间片已被确定为优先调查对象。这是一个以海洋同位素阶段KM5c(KM5.3)为中心的负底栖氧同位素漂移(0.21-0.23‰)的暖期。它发生在与现在非常相似的轨道强迫时期。气候模式模拟表明，在至少一个以时间片为中心的进动周期内，代理温度估计不太可能受到轨道强迫的显著影响，北大西洋可能是一个重要的例外。
The characteristics of the mid-Pliocene warm period (mPWP: 3.264–3.025 Ma BP) have been examined using geological proxies and climate models. While there is agreement between models and data, details of regional climate differ. Uncertainties in prescribed forcings and in proxy data limit the utility of the interval to understand the dynamics of a warmer than present climate or evaluate models. This uncertainty comes, in part, from the reconstruction of a time slab rather than a time slice, where forcings required by climate models can be more adequately constrained. Here, we describe the rationale and approach for identifying a time slice(s) for Pliocene environmental reconstruction. A time slice centred on 3.205 Ma BP (3.204–3.207 Ma BP) has been identified as a priority for investigation. It is a warm interval characterized by a negative benthic oxygen isotope excursion (0.21–0.23‰) centred on marine isotope stage KM5c (KM5.3). It occurred during a period of orbital forcing that was very similar to present day. Climate model simulations indicate that proxy temperature estimates are unlikely to be significantly affected by orbital forcing for at least a precession cycle centred on the time slice, with the North Atlantic potentially being an important exception.
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影响因子：
--
作者：
Dekens, Petra S.;Ravelo, Ana Christina;McCarthy, Matthew D.
通讯作者：
McCarthy, Matthew D.
影响因子：
--
作者：
Bartoli, Gretta;Hoenisch, Baerbel;Zeebe, Richard E.
通讯作者：
Zeebe, Richard E.
影响因子：
5.1
作者：
Chan, W. -L.;Abe-Ouchi, A.;Ohgaito, R.
通讯作者：
Ohgaito, R.
影响因子：
5.3
作者：
BERGER, A;LOUTRE, MF
通讯作者：
LOUTRE, MF
DOI：
10.1016/j.palaeo.2011.03.016
发表时间：
2011-08-15
影响因子：
3
作者：
Dowsett, Harry J.;Haywood, Alan M.;Foley, Kevin M.
通讯作者：
Foley, Kevin M.