globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068389
论文题名:
Evolution of moisture transport to the western U.S. during the last deglaciation
作者: Wong C.I.; Potter G.L.; Montañez I.P.; Otto-Bliesner B.L.; Behling P.; Oster J.L.
刊名: Geophysical Research Letters
ISSN: 0094-9132
EISSN: 1944-8863
出版年: 2016
卷: 43, 期:7
起始页码: 3468
结束页码: 3477
语种: 英语
英文关键词: hydroclimate ; last deglaciation ; paleoclimate simulation ; southwest U.S ; speleothem ; younger dryas
Scopus关键词: Atmospheric pressure ; Glacial geology ; Moisture ; Hydroclimate ; Last deglaciation ; Paleoclimates ; Southwest U.S ; Speleothem ; Younger Dryas ; Storms
英文摘要: We investigate climate dynamics and teleconnections governing moisture transport to the western U.S. during past warm and cool intervals of the last deglaciation using paleoclimate simulations of the Bølling warm (∼14 ka) and Younger Dryas cool (∼12 ka) events. Results suggest that the waning continental ice sheet weakened atmospheric pressure centers in the region leading to a progression from a more sinuous to more zonal Pacific winter storm track throughout the deglaciation. Furthermore, variations in meltwater flux to the Atlantic influenced the meridional temperature gradient over the Pacific and thereby modulated storm track intensity. Changing sinuosity of the storm track may be reflected in broad increases in modeled δ18Oprecip and observed δ18Ospeleothem values from the western U.S. over the last deglaciation, whereas abrupt δ18Ospeleothem shifts are dynamically consistent with the response of storm track intensity to variations in meltwater flux to the Atlantic. © 2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979724519&doi=10.1002%2f2016GL068389&partnerID=40&md5=1ded2528f3dbeefbaabcf077afa9aef0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10095
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Earth and Environmental Science, Boston College, Chestnut Hill, MA, United States

Recommended Citation:
Wong C.I.,Potter G.L.,Montañez I.P.,et al. Evolution of moisture transport to the western U.S. during the last deglaciation[J]. Geophysical Research Letters,2016-01-01,43(7).
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