Coherent high- and low-latitude climate variability during the holocene warm period
Coherent high- and low-latitude climate variability during the holocene warm period
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DOI：
10.1126/science.288.5474.2198
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发表时间：
2000-06-23
期刊：
影响因子：
56.9
通讯作者：
Sarnthein, M
中科院分区：
文献类型：
--
作者：
deMenocal, P;Ortiz, J;Sarnthein, M
西非海洋表面温度（SST）变化的动物记录记录了一系列突然的、千年尺度的冷却事件，这些事件打断了全新世的温暖期。这些事件显然是由于较冷的温带或次极地水域向亚热带地区增加的向南平流或区域上升流增强所致。这些事件中最近的是小冰期，发生在公元1300年至1850年之间，当时副热带海温降低了3至4摄氏度。这些事件与全新世北大西洋亚极海温的变化同步，记录了全新世期间高纬度和低纬度气候在千年尺度上的变化之间存在强烈的相位联系。
A faunal record of sea-surface temperature (SST) variations off West Africa documents a series of abrupt, millennial-scale cooling events, which punctuated the Holocene warm period. These events evidently resulted from increased southward advection of cooler temperate or subpolar waters to this subtropical location or from enhanced regional upwelling. The most recent of these events was the Little Ice Age, which occurred between 1300 to 1850 A.D., when subtropical SSTs were reduced by 3 degrees to 4 degrees C. These events were synchronous with Holocene changes in subpolar North Atlantic SSTs, documenting a strong, in-phase link between millennial-scale variations in high- and Low-latitude climate during the Holocene.