Print Email Facebook Twitter The pattern of anthropogenic signal emergence in Greenland Ice Sheet surface mass balance Title The pattern of anthropogenic signal emergence in Greenland Ice Sheet surface mass balance Author Fyke, J.G. Vizcaino, M. Lipscomb, W.H. Faculty Civil Engineering and Geosciences Department Geoscience & Remote Sensing Date 2014-08-18 Abstract Surface mass balance (SMB) trends influence observed Greenland Ice Sheet (GrIS) mass loss, but the component of these trends related to anthropogenic forcing is unclear. Here we study the simulated spatial pattern of emergence of an anthropogenically derived GrIS SMB signal between 1850 and 2100 using the Community Earth System Model. We find emergence timing heterogeneity, with a bimodal structure reflecting interior snowfall increases against a background of low SMB variability, and peripheral surface melting increases against a backdrop of high SMB variability. We also find a nonemerging intermediate region. We conclude that (1) a bimodal pattern of GrIS SMB change will unambiguously reflect the impact of anthropogenic forcing; (2) present-day peripheral and interior SMB trends likely have an underlying anthropogenically forced component; (3) local emergence occurs well before emergence of a spatially integrated signal; and (4) the GrIS summit region may be an ideal location for monitoring regional/global climate change. Subject Greenlandsurface mass balanceanthropogenic signalclimate changecryosphere To reference this document use: http://resolver.tudelft.nl/uuid:ae3e1d1a-fefc-4a05-96a7-978bc2c902f4 DOI https://doi.org/10.1002/2014GL060735 Publisher American Geophysical Union Embargo date 2015-02-18 ISSN 0094-8276 Source Geophysical Research Letters, 41 (16), 2014 Part of collection Institutional Repository Document type journal article Rights © 2014 American Geophysical Union Files PDF Vizcaino_2014.pdf 1.58 MB Close viewer /islandora/object/uuid:ae3e1d1a-fefc-4a05-96a7-978bc2c902f4/datastream/OBJ/view