Arid
DOI10.1073/pnas.1201083109
1,500 year quantitative reconstruction of winter precipitation in the Pacific Northwest
Steinman, Byron A.1,2; Abbott, Mark B.2; Mann, Michael E.1,3; Stansell, Nathan D.4; Finney, Bruce P.5
通讯作者Steinman, Byron A.
来源期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
出版年2012
卷号109期号:29页码:11619-11623
英文摘要

Multiple paleoclimate proxies are required for robust assessment of past hydroclimatic conditions. Currently, estimates of drought variability over the past several thousand years are based largely on tree-ring records. We produced a 1,500-y record of winter precipitation in the Pacific Northwest using a physical model-based analysis of lake sediment oxygen isotope data. Our results indicate that during the Medieval Climate Anomaly (MCA) (900-1300 AD) the Pacific Northwest experienced exceptional wetness in winter and that during the Little Ice Age (LIA) (1450-1850 AD) conditions were drier, contrasting with hydroclimatic anomalies in the desert Southwest and consistent with climate dynamics related to the El Nino Southern Oscillation (ENSO) and the Pacific Decadal Oscillation (PDO). These findings are somewhat discordant with drought records from tree rings, suggesting that differences in seasonal sensitivity between the two proxies allow a more compete understanding of the climate system and likely explain disparities in inferred climate trends over centennial timescales.


英文关键词lake modeling oxygen isotopes American West
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000306837100033
WOS关键词DECADAL CLIMATE VARIABILITY ; CLOSED-BASIN LAKES ; TROPICAL PACIFIC ; UNITED-STATES ; HYDROLOGIC RESPONSE ; LAST MILLENNIUM ; DROUGHT ; OSCILLATION ; AMERICA ; TELECONNECTIONS
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/174627
作者单位1.Penn State Univ, Dept Meteorol, University Pk, PA 16802 USA;
2.Univ Pittsburgh, Dept Geol & Planetary Sci, Pittsburgh, PA 15260 USA;
3.Penn State Univ, Earth & Environm Syst Inst, University Pk, PA 16802 USA;
4.Ohio State Univ, Byrd Polar Res Ctr, Columbus, OH 43210 USA;
5.Idaho State Univ, Pocatello, ID 83209 USA
推荐引用方式
GB/T 7714
Steinman, Byron A.,Abbott, Mark B.,Mann, Michael E.,et al. 1,500 year quantitative reconstruction of winter precipitation in the Pacific Northwest[J],2012,109(29):11619-11623.
APA Steinman, Byron A.,Abbott, Mark B.,Mann, Michael E.,Stansell, Nathan D.,&Finney, Bruce P..(2012).1,500 year quantitative reconstruction of winter precipitation in the Pacific Northwest.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,109(29),11619-11623.
MLA Steinman, Byron A.,et al."1,500 year quantitative reconstruction of winter precipitation in the Pacific Northwest".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 109.29(2012):11619-11623.
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