Holocene forest dynamics in central and western Mediterranean: periodicity, spatio-temporal patterns and climate influence.
Holocene forest dynamics in central and western Mediterranean: periodicity, spatio-temporal patterns and climate influence.
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DOI：
10.1038/s41598-018-27056-2
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发表时间：
2018-06-12
影响因子：
4.6
通讯作者：
Magri D
中科院分区：
文献类型：
--
作者：
Di Rita F;Fletcher WJ;Aranbarri J;Margaritelli G;Lirer F;Magri D
众所周知，全新世表现出千年规模的气候变化。然而，其周期性、时空模式和潜在过程尚未完全破译。这里我们重点关注地中海中部和西部地区。我们表明，加埃塔湾（第勒尼安海中部）的森林周期性衰退揭示了 1860 年的周期性，与大约 1860 年的周期性一致。由气候模式大规模变化引起的 1800 年气候波动，与太阳活动和/或 AMOC 强度有关。我们发现，地中海中南部的一些花粉和古水文学代理记录中也记录了周期性的森林衰退和干旱事件。我们在地中海西南部的一些古水文记录中也发现了同时代的事件，但这些记录普遍显示出潮湿的气候条件，表明与地中海中南部相反的时空水文模式，并表明这两个地区同时出现了不同的气候模式表现。我们认为，这些相反的水文气候状况表明类 NAO 环流的盛行或主要阶段、东大西洋模式以及北非反气旋的延伸和位置之间存在复杂的相互作用。在更大的地理范围内，受太阳活动和/或 AMOC 强度调节的 ITCZ 位移也可能间接影响观测到的模式。
It is well-known that the Holocene exhibits a millennial-scale climate variability. However, its periodicity, spatio-temporal patterns and underlying processes are not fully deciphered yet. Here we focus on the central and western Mediterranean. We show that recurrent forest declines from the Gulf of Gaeta (central Tyrrhenian Sea) reveal a 1860-yr periodicity, consistent with a ca. 1800-yr climate fluctuation induced by large-scale changes in climate modes, linked to solar activity and/or AMOC intensity. We show that recurrent forest declines and dry events are also recorded in several pollen and palaeohydrological proxy-records in the south-central Mediterranean. We found coeval events also in several palaeohydrological records from the south-western Mediterranean, which however show generally wet climate conditions, indicating a spatio-temporal hydrological pattern opposite to the south-central Mediterranean and suggesting that different expressions of climate modes occurred in the two regions at the same time. We propose that these opposite hydroclimate regimes point to a complex interplay of the prevailing or predominant phases of NAO-like circulation, East Atlantic pattern, and extension and location of the North African anticyclone. At a larger geographical scale, displacements of the ITCZ, modulated by solar activity and/or AMOC intensity, may have also indirectly influenced the observed pattern.
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影响因子：
3.9
作者：
Berger, WH;von Rad, U
通讯作者：
von Rad, U
DOI：
10.1002/joc.973
发表时间：
2003-12-01
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Dünkeloh, A;Jacobeit, J
通讯作者：
Jacobeit, J
影响因子：
4.6
作者：
Lechleitner FA;Breitenbach SF;Rehfeld K;Ridley HE;Asmerom Y;Prufer KM;Marwan N;Goswami B;Kennett DJ;Aquino VV;Polyak V;Haug GH;Eglinton TI;Baldini JU
通讯作者：
Baldini JU
影响因子：
4.3
作者：
Brandimarte, Luigia;Di Baldassarre, Giuliano;Montanari, Alberto
通讯作者：
Montanari, Alberto
影响因子：
4.6
作者：
Comas-Bru, L.;McDermott, F.;Werner, M.
通讯作者：
Werner, M.