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The Medieval Climate Anomaly in the Mediterranean Region

机译：地中海地区的中世纪气候异常

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摘要

The Medieval Climate Anomaly (MCA) is a preindustrial phase of pronounced natural climate variability with a core period from 1000 to 1200 CE. The paper presents a synthesis that integrates palaeotemperature records from the Greater Mediterranean Region encompassing the past 1,500 years based on multiproxy data from 79 published land and marine sites. MCA warming dominated the Western Mediterranean (Iberia, NW Africa) as well as the northern land areas of the Central and Eastern Mediterranean region. MCA cooling prevailed in the Canary Current Upwelling System, southern Levant, and some sea areas of the Central and Eastern Mediterranean. Previous palaeoreconstructions suggest persistent positive Atlantic Multidecadal Oscillation (AMO+) and North Atlantic Oscillation (NAO+) conditions during the MCA, while the Little Ice Age was dominated by an AMO? and NAO? regime. During the past 150 years, AMO+ conditions are typically associated with warming episodes in the Mediterranean area. A similar relationship appears to have also been established during the MCA as the majority of all Mediterranean land sites experienced warm climate conditions. In contrast, the NAO typically leads to a characteristic west-east temperature dipole pattern in the basin, as documented for the last decades. During NAO+ conditions the Western Mediterranean is generally warm (and dry), while large parts of the Central and Eastern Mediterranean are cold. Similar trends seem to have been developed during the MCA when the NAO+ regime led to consistent warming in the Western Mediterranean, while a significant number of sites with MCA cooling existed in the Central and Eastern Mediterranean.
机译：中世纪气候异常（MCA）是一个明显的自然气候变化的前工业化阶段，其核心周期为1000至1200 CE。本文根据79个已公布的陆地和海洋遗址的多道数据，综合了大地中海地区过去1500年的古温度记录。地中海西部（伊比利亚，非洲西北部）以及地中海中部和东部地区的北部陆地地区主要是MCA变暖。MCA冷却盛行于加那利洋流上升流系统、黎凡特南部以及地中海中部和东部的一些海域。先前的古重建表明，在MCA期间，大西洋多年代际振荡（AMO+）和北大西洋振荡（NAO+）条件持续正，而小冰期则由AMO？NAO呢？政体在过去150年中，AMO+条件通常与地中海地区的变暖事件有关。在MCA期间，似乎也建立了类似的关系，因为大多数地中海陆地遗址都经历了温暖的气候条件。相比之下，NAO通常会在盆地中形成一种典型的东西向温度偶极子模式，这是过去几十年的记录。在NAO+条件下，地中海西部通常是温暖（和干燥）的，而地中海中部和东部的大部分地区是寒冷的。MCA期间似乎也出现了类似的趋势，当时NAO+制度导致西地中海持续变暖，而地中海中部和东部存在大量MCA冷却的地点。

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  • 来源
    《Paleoceanography》 |2019年第10期|共25页
  • 作者

    S. Lüning; L. Schulte; S. Garcés-Pastor; I.B. Danladi; M. Ga?ka;

  • 作者单位

    Institute for Hydrography Geoecology and Climate Sciences ?geri Switzerland;

    FluvAlps Research Group Department of Geography University of Barcelona Barcelona Spain;

    Troms? Museum UiT-Arctic University of Norway Troms? Norway;

    Department of Geological Engineering Faculty of Engineering Mugla Sitki Ko?man University Mugla Turkey;

    Department of Geobotany and Plant Ecology Faculty of Biology and Environmental Protection University of Lodz Lodz Poland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 海洋学;
  • 关键词

    The Medieval; Climate Anomaly; Mediterranean Region;

    机译：中世纪;气候异常;地中海地区;

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