• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >Absence of 21st century warming on Antarctic Peninsula consistent with natural variability
【24h】

Absence of 21st century warming on Antarctic Peninsula consistent with natural variability

机译：与自然变异相一致的南极半岛缺乏21世纪变暖

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

Since the 1950s, research stations on the Antarctic Peninsula have recorded some of the largest increases in near-surface air temperature in the Southern Hemisphere(1). This warming has contributed to the regional retreat of glaciers(2), disintegration of floating ice shelves(3) and a 'greening' through the expansion in range of various flora(4). Several interlinked processes have been suggested as contributing to the warming, including stratospheric ozone depletion(5), local sea-ice loss(6), an increase in westerly winds(5,7), and changes in the strength and location of low-high-latitude atmospheric teleconnections(8,9). Here we use a stacked temperature record to show an absence of regional warming since the late 1990s. The annual mean temperature has decreased at a statistically significant rate, with the most rapid cooling during the Austral summer. Temperatures have decreased as a consequence of a greater frequency of cold, east-to-southeasterly winds, resulting from more cyclonic conditions in the northern Weddell Sea associated with a strengthening mid-latitude jet. These circulation changes have also increased the advection of sea ice towards the east coast of the peninsula, amplifying their effects. Our findings cover only 1% of the Antarctic continent and emphasize that decadal temperature changes in this region are not primarily associated with the drivers of global temperature change but, rather, reflect the extreme natural internal variability of the regional atmospheric circulation.
机译：自1950年代以来，南极半岛的研究站记录了南半球近地表气温的最大增幅（1）。这种变暖导致了冰川的区域性退缩（2），浮冰架的解体（3）以及各种植物种类范围的扩大（4）的“绿化”。已经提出了一些相互联系的过程来促进变暖，包括平流层臭氧消耗（5），局部海冰损失（6），西风增加（5,7）以及低空强度和位置的变化。高纬度大气遥相关（8,9）。在这里，我们使用堆积的温度记录来显示自1990年代后期以来一直没有区域变暖。年平均温度以统计学上显着的速度下降，在南方夏季降温最快。由于北魏德海北部的气旋条件与中纬度喷气机的加强相关，气温从东风到南风的出现频率增加，温度有所降低。这些环流变化还增加了海冰对半岛东海岸的平流，扩大了其影响。我们的研究结果仅覆盖南极大陆的1％，并强调该地区的年代际温度变化主要与全球温度变化的驱动因素无关，而是反映了区域大气环流的极端自然内部变化。

著录项

  • 来源
    《Nature》 |2016年第7612期|411-415|共5页
  • 作者

    Turner John; Lu Hua; White Ian; King John C.; Phillips Tony; Hosking J. Scott; Bracegirdle Thomas J.; Marshall Gareth J.; Mulvaney Robert; Deb Pranab;

  • 作者单位

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

    British Antarctic Survey, NERC, Madingley Rd, Cambridge CB3 0ET, England;

  • 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