DOI: 10.1002/2014GL059499
论文题名: Ocean-atmosphere forcing of centennial hydroclimate variability in the Pacific Northwest
作者: Steinman B.A. ; Abbott M.B. ; Mann M.E. ; Ortiz J.D. ; Feng S. ; Pompeani D.P. ; Stansell N.D. ; Anderson L. ; Finney B.P. ; Bird B.W.
刊名: Geophysical Research Letters
ISSN: 0094-10214
EISSN: 1944-9945
出版年: 2014
卷: 41, 期: 7 起始页码: 2553
结束页码: 2560
语种: 英语
英文关键词: isotope geochemistry
; lake sediment
; Little Ice Age
; Medieval Climate Anomaly
; paleoclimatology
; paleolimnology
Scopus关键词: Atmospheric pressure
; Climate change
; Climate models
; Drought
; Exploratory geochemistry
; Isotopes
; Paleolimnology
; Sediments
; Isotope geochemistry
; Lake sediments
; Little Ice Age
; Medieval climate anomalies
; Paleoclimatology
; Lakes
; atmospheric forcing
; climate variation
; El Nino-Southern Oscillation
; lacustrine deposit
; Little Ice Age
; Medieval Warm Period
; paleoclimate
; paleolimnology
; timescale
; Pacific Northwest
英文摘要: Reconstructing centennial timescale hydroclimate variability during the late Holocene is critically important for understanding large-scale patterns of drought and their relationship with climate dynamics. We present sediment oxygen isotope records spanning the last two millennia from 10 lakes, as well as climate model simulations, indicating that the Little Ice Age was dry relative to the Medieval Climate Anomaly in much of the Pacific Northwest of North America. This pattern is consistent with observed associations between the El Niño-Southern Oscillation (ENSO), the Northern Annular Mode, and drought as well as with proxy-based reconstructions of Pacific and Atlantic ocean-atmosphere variations over the past 1000-years the large amplitude of centennial variability indicated by the lake data suggests that regional hydroclimate is characterized by longer-term shifts in ENSO-like dynamics and that an improved understanding of the centennial timescale relationship between external forcing and drought is necessary for projecting future hydroclimatic conditions in western North America. Key Points Lake sediment isotope records exhibit coherent centennial timescale variability The Little Ice Age was dry in much of the Pacific Northwest Climate model simulations support drought patterns evinced by lake sediment data © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899039041&doi=10.1002%2f2014GL059499&partnerID=40&md5=3667651c85185398a1070cf7f3881b1d
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7478
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Meteorology, Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA, United States
Recommended Citation:
Steinman B.A.,Abbott M.B.,Mann M.E.,et al. Ocean-atmosphere forcing of centennial hydroclimate variability in the Pacific Northwest[J]. Geophysical Research Letters,2014-01-01,41(7).