LAST GLACIAL TERMINATION
; GLOBAL CARBON-CYCLE
; GREENLAND ICE-CORE
; YOUNGER DRYAS
; SEA-ICE
; OCEAN CIRCULATION
; NORDIC SEAS
; RADIOCARBON MEASUREMENTS
; OVERTURNING CIRCULATION
; MERIDIONAL CIRCULATION
WOS学科分类:
Multidisciplinary Sciences
WOS研究方向:
Science & Technology - Other Topics
英文摘要:
Constraining the response time of the climate system to changes in North Atlantic Deep Water (NADW) formation is fundamental to improving climate and Atlantic Meridional Overturning Circulation predictability. Here we report a new synchronization of terrestrial, marine, and ice-core records, which allows the first quantitative determination of the response time of North Atlantic climate to changes in high-latitude NADW formation rate during the last deglaciation. Using a continuous record of deep water ventilation from the Nordic Seas, we identify a similar to 400-year lead of changes in high-latitude NADW formation ahead of abrupt climate changes recorded in Greenland ice cores at the onset and end of the Younger Dryas stadial, which likely occurred in response to gradual changes in temperatureand wind-driven freshwater transport. We suggest that variations in Nordic Seas deep-water circulation are precursors to abrupt climate changes and that future model studies should address this phasing.
1.Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England 2.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA 3.NORCE Norwegian Res Ctr, N-5007 Bergen, Norway 4.Bjerknes Ctr Climate Res, N-5007 Bergen, Norway 5.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA 6.Univ Sheffield, Sch Math & Stat, Sheffield S3 7RH, S Yorkshire, England 7.Coll William & Mary, Dept Geol, Williamsburg, VA 23187 USA 8.Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA 9.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA 10.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA 11.Univ Cambridge, Godwin Lab Palaeoclimate Res, Dept Earth Sci, Cambridge CB2 3EQ, England
Recommended Citation:
Muschitiello, Francesco,D',Andrea, William J.,et al. Deep-water circulation changes lead North Atlantic climate during deglaciation[J]. NATURE COMMUNICATIONS,2019-01-01,10