edu.ucar.opensky::articles:18438 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T02:51:30.273902 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7f76f5g Evolution of moisture transport to the western U.S. during the last deglaciation 2016-04-16T00:00:00Z publication https://n2t.org/ark:/85065/d7f76f5g https://doi.org/10.1002/2016GL068389 Wong, C. author Potter, G. author Montañez, I. author Otto-Bliesner, Bette author Behling, P. author Oster, J. author UCAR/NCAR - Library publisher 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. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2016 American Geophysical Union. None eng geoscientificInformation