Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1073/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
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ISSN | 0027-8424 |
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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