https://scholars.lib.ntu.edu.tw/handle/123456789/391527
Title: | Gradual onset and recovery of the Younger Dryas abrupt climate event in the tropics | Authors: | CHUAN-CHOU SHEN | Issue Date: | 2015 | Journal Volume: | 6 | Source: | Nature Communications | Abstract: | Proxy records of temperature from the Atlantic clearly show that the Younger Dryas was an abrupt climate change event during the last deglaciation, but records of hydroclimate are underutilized in defining the event. Here we combine a new hydroclimate record from Palawan, Philippines, in the tropical Pacific, with previously published records to highlight a difference between hydroclimate and temperature responses to the Younger Dryas. Although the onset and termination are synchronous across the records, tropical hydroclimate changes are more gradual (>100 years) than the abrupt (10-100 years) temperature changes in the northern Atlantic Ocean. The abrupt recovery of Greenland temperatures likely reflects changes in regional sea ice extent. Proxy data and transient climate model simulations support the hypothesis that freshwater forced a reduction in the Atlantic meridional overturning circulation, thereby causing the Younger Dryas. However, changes in ocean overturning may not produce the same effects globally as in Greenland. © 2015 Macmillan Publishers Limited. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84940688690&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/391527 |
DOI: | 10.1038/ncomms9061 | SDG/Keyword: | climate modeling; climate variation; last deglaciation; meridional circulation; overturn; proxy climate record; sea ice; temperature; tropical environment; Younger Dryas; air temperature; Article; Atlantic Ocean; atmospheric moisture; chronology; climate change; deglaciation; global climate; greenhouse gas; Greenland; humidity; Indian Ocean; last glacial maximum; ocean current; Pacific islands; paleoclimate; Philippines; precipitation; sea ice; sea surface temperature; seasonal variation; summer; temperature; tropics; water vapor; Younger Dryas; Arctic; Atlantic Ocean; Atlantic Ocean (North); Greenland; MIMAROPA; Pacific Ocean; Pacific Ocean (Tropical); Palawan [Mimaropa]; Palawan [Palawan (PRV)]; Philippines |
Appears in Collections: | 地質科學系 |
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