Gomez, N.Gregoire, L. J.Mitrovica, JerryPayne, A. J.2019-09-252015Gomez, N., L. J. Gregoire, J. X. Mitrovica, and A. J. Payne. 2015. “Laurentide‐Cordilleran Ice Sheet Saddle Collapse as a Contribution to Meltwater Pulse 1A.” Geophysical Research Letters 42 (10): 3954–62. https://doi.org/10.1002/2015gl063960.0094-82761944-8007http://nrs.harvard.edu/urn-3:HUL.InstRepos:41401419The source or sources of meltwater pulse 1A (MWP-1A) at similar to 14.5ka, recorded at widely distributed sites as a sea level rise of similar to 10-20m in less than 500years, is uncertain. A recent ice modeling study of North America and Greenland has suggested that the collapse of an ice saddle between the Laurentide and Cordilleran ice sheets, with a eustatic sea level equivalent (ESLE) of similar to 10m, may have been the dominant contributor to MWP-1A. To test this suggestion, we predict gravitationally self-consistent sea level changes from the Last Glacial Maximum to the present day associated with the ice model. We find that a combination of the saddle collapse scenario and melting outside North America and Greenland with an ESLE of similar to 3m yields sea level changes across MWP-1A that are consistent with far-field sea level records at Barbados, Tahiti, and Sunda Shelf.en-USJournal Article2019-09-2510.1002/2015GL063960