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DOI | 10.1073/pnas.1615880114 |
Early 20th-century Arctic warming intensified by Pacific and Atlantic multidecadal variability | |
Tokinaga, Hiroki1,2; Xie, Shang-Ping3; Mukougawa, Hitoshi2 | |
2017-06-13 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:24页码:6227-6232 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; USA |
英文摘要 | With amplified warming and record sea ice loss, the Arctic is the canary of global warming. The historical Arctic warming is poorly understood, limiting our confidence in model projections. Specifically, Arctic surface air temperature increased rapidly over the early 20th century, at rates comparable to those of recent decades despite much weaker greenhouse gas forcing. Here, we show that the concurrent phase shift of Pacific and Atlantic interdecadal variability modes is the major driver for the rapid early 20th-century Arctic warming. Atmospheric model simulations successfully reproduce the early Arctic warming when the interdecadal variability of sea surface temperature (SST) is properly prescribed. The early 20th-century Arctic warming is associated with positive SST anomalies over the tropical and North Atlantic and a Pacific SST pattern reminiscent of the positive phase of the Pacific decadal oscillation. Atmospheric circulation changes are important for the early 20th-century Arctic warming. The equatorial Pacific warming deepens the Aleutian low, advecting warm air into the North American Arctic. The extratropical North Atlantic and North Pacific SST warming strengthens surface westerly winds over northern Eurasia, intensifying the warming there. Coupled ocean-atmosphere simulations support the constructive intensification of Arctic warming by a concurrent, negative-to-positive phase shift of the Pacific and Atlantic interdecadal modes. Our results aid attributing the historical Arctic warming and thereby constrain the amplified warming projected for this important region. |
英文关键词 | early 20th-century Arctic warming Pacific decadal variability Atlantic multidecadal variability ocean-atmosphere interaction climate variability |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403179300039 |
WOS关键词 | SEA-ICE ; AIR-TEMPERATURE ; CLIMATE-CHANGE ; NORTH PACIFIC ; WIND SPEEDS ; OSCILLATION ; CIRCULATION ; PRESSURE ; RECONSTRUCTION ; SENSITIVITY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204733 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Kyoto Univ, Hakubi Ctr Adv Res, Kyoto 6068501, Japan; 2.Kyoto Univ, Disaster Prevent Res Inst, Kyoto 6110011, Japan; 3.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Tokinaga, Hiroki,Xie, Shang-Ping,Mukougawa, Hitoshi. Early 20th-century Arctic warming intensified by Pacific and Atlantic multidecadal variability[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(24):6227-6232. |
APA | Tokinaga, Hiroki,Xie, Shang-Ping,&Mukougawa, Hitoshi.(2017).Early 20th-century Arctic warming intensified by Pacific and Atlantic multidecadal variability.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(24),6227-6232. |
MLA | Tokinaga, Hiroki,et al."Early 20th-century Arctic warming intensified by Pacific and Atlantic multidecadal variability".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.24(2017):6227-6232. |
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