• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >North Atlantic forcing of tropical Indian Ocean climate
【24h】

North Atlantic forcing of tropical Indian Ocean climate

机译：北大西洋迫使印度洋为热带气候

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

众所周知，北大西洋冷事件如"新仙女木事HIV-1件"和"海因里希冰段"影响了更广泛的气候HIV-1系统，但印度洋对这种事件的反应因适当代HIV-1用记录的缺乏而仍不清楚。这项研究发表了来HIV-1自东印度洋年代确定极为清楚的沉积层、覆盖HIV-1过去45,000年的高分辨率记录。结合对海因HIV-1里希事件所做的最新模型模拟，这些数据显示HIV-1了由北大西洋的条件所遥控的热带水文的剧HIV-1烈变化。%The response of the tropical climate in the Indian Ocean realm to abrupt climate change events in the North Atlantic Ocean is contentious. Repositioning of the intertropical convergence zone is thought to have been responsible for changes in tropical hydroclimate during North Atlantic cold spells, but the dearth of high-resolution records outside the monsoon realm in the Indian Ocean precludes a full understanding of this remote relationship and its underlying mechanisms. Here we show that slowdowns of the Atlantic meridional overturning circulation during Heinrich stadials and the Younger Dryas stadial affected the tropical Indian Ocean hydroclimate through changes to the Hadley circulation including a southward shift in the rising branch (the intertropical convergence zone) and an overall weakening over the southern Indian Ocean. Our results are based on new, high-resolution sea surface temperature and seawater oxygen isotope records of well-dated sedimentary archives from the tropical eastern Indian Ocean for the past 45,000 years, combined with climate model simulations of Atlantic circulation slowdown under Marine Isotope Stages 2 and 3 boundary conditions. Similar conditions in the east and west of the basin rule out a zonal dipole structure as the dominant forcing of the tropical Indian Ocean hydroclimate of millennial-scale events. Results from our simulations and proxy data suggest dry conditions in the northern Indian Ocean realm and wet and warm conditions in the southern realm during North Atlantic cold spells.
机译：众所周知，北大西洋冷事件如"新仙女木事HIV-1件"和"海因里希冰段"影响了更广泛的气候HIV-1系统，但印度洋对这种事件的反应因适当代HIV-1用记录的缺乏而仍不清楚。这项研究发表了来HIV-1自东印度洋年代确定极为清楚的沉积层、覆盖HIV-1过去45,000年的高分辨率记录。结合对海因HIV-1里希事件所做的最新模型模拟，这些数据显示HIV-1了由北大西洋的条件所遥控的热带水文的剧HIV-1烈变化。%The response of the tropical climate in the Indian Ocean realm to abrupt climate change events in the North Atlantic Ocean is contentious. Repositioning of the intertropical convergence zone is thought to have been responsible for changes in tropical hydroclimate during North Atlantic cold spells, but the dearth of high-resolution records outside the monsoon realm in the Indian Ocean precludes a full understanding of this remote relationship and its underlying mechanisms. Here we show that slowdowns of the Atlantic meridional overturning circulation during Heinrich stadials and the Younger Dryas stadial affected the tropical Indian Ocean hydroclimate through changes to the Hadley circulation including a southward shift in the rising branch (the intertropical convergence zone) and an overall weakening over the southern Indian Ocean. Our results are based on new, high-resolution sea surface temperature and seawater oxygen isotope records of well-dated sedimentary archives from the tropical eastern Indian Ocean for the past 45,000 years, combined with climate model simulations of Atlantic circulation slowdown under Marine Isotope Stages 2 and 3 boundary conditions. Similar conditions in the east and west of the basin rule out a zonal dipole structure as the dominant forcing of the tropical Indian Ocean hydroclimate of millennial-scale events. Results from our simulations and proxy data suggest dry conditions in the northern Indian Ocean realm and wet and warm conditions in the southern realm during North Atlantic cold spells.

著录项

  • 来源
    《Nature》 |2014年第7498期|76-80qt03|共6页
  • 作者

    Mahyar Mohtadi; Matthias Prange; Delia W. Oppo; Ricardo De Pol-Holz; UteMerkel; Xiao Zhang; Stephan Steinke; Andreas Lueckge;

  • 作者单位

    MARUM-Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany;

    MARUM-Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany;

    Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA;

    Department of Oceanography, University of Concepcion, Concepcion, Chile;

    MARUM-Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany;

    MARUM-Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany;

    MARUM-Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany;

    Federal Institute for Geosciences and Natural Resources, 30655 Hannover, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号