Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1618201114 |
Pacific North American circulation pattern links external forcing and North American hydroclimatic change over the past millennium | |
Liu, Zhongfang1; Tang, Yanlin2; Jian, Zhimin1; Poulsen, Christopher J.3; Welker, Jeffrey M.4; Bowen, Gabriel J.5,6 | |
2017-03-28 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:13页码:3340-3345 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Land and sea surface temperatures, precipitation, and storm tracks in North America and the North Pacific are controlled to a large degree by atmospheric variability associated with the Pacific North American (PNA) pattern. The modern instrumental record indicates a trend toward a positive PNA phase in recent decades, which has led to accelerated warming and snowpack decline in northwestern North America. The brevity of the instrumental record, however, limits our understanding of long-term PNA variability and its directional or cyclic patterns. Here we develop a 937-y-long reconstruction of the winter PNA based on a network of annually resolved tree-ring proxy records across North America. The reconstruction is consistent with previous regional records in suggesting that the recent persistent positive PNA pattern is unprecedented over the past millennium, but documents patterns of decadal-scale variability that contrast with previous reconstructions. Our reconstruction shows that PNA has been strongly and consistently correlated with sea surface temperature variation, solar irradiance, and volcanic forcing over the period of record, and played a significant role in translating these forcings into decadal-to-multidecadal hydroclimate variability over North America. Climate model ensembles show limited power to predict multidecadal variation in PNA over the period of our record, raising questions about their potential to project future hydroclimatic change modulated by this circulation pattern. |
英文关键词 | paleoclimate atmospheric circulation Holocene climate change North America |
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:000397607300050 |
WOS关键词 | ATMOSPHERIC CIRCULATION ; MOUNTAIN SNOWPACK ; DROUGHT ; OSCILLATION ; CLIMATE ; VARIABILITY ; HEMISPHERE ; TEMPERATURE ; TELECONNECTIONS ; RECONSTRUCTION |
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/204682 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China; 2.Tongji Univ, Sch Math Sci, Shanghai 200092, Peoples R China; 3.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA; 4.Univ Alaska Anchorage, Dept Biol Sci, Anchorage, AK 99508 USA; 5.Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA; 6.Univ Utah, Global Change & Sustainabil Ctr, Salt Lake City, UT 84112 USA |
推荐引用方式 GB/T 7714 | Liu, Zhongfang,Tang, Yanlin,Jian, Zhimin,et al. Pacific North American circulation pattern links external forcing and North American hydroclimatic change over the past millennium[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(13):3340-3345. |
APA | Liu, Zhongfang,Tang, Yanlin,Jian, Zhimin,Poulsen, Christopher J.,Welker, Jeffrey M.,&Bowen, Gabriel J..(2017).Pacific North American circulation pattern links external forcing and North American hydroclimatic change over the past millennium.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(13),3340-3345. |
MLA | Liu, Zhongfang,et al."Pacific North American circulation pattern links external forcing and North American hydroclimatic change over the past millennium".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.13(2017):3340-3345. |
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