Regional and global forcing of glacier retreat during the last deglaciation
- Boston College, Chestnut Hill, MA (United States). Dept. of Earth and Environmental Sciences
- Oregon State Univ., Corvallis, OR (United States). College of Earth, Ocean, and Atmospheric Sciences
- Univ. of Wisconsin, Madison, WI (United States). Nelson Inst. for Environmental Studies; Oregon State Univ., Corvallis, OR (United States). College of Earth, Ocean, and Atmospheric Sciences
- Purdue Univ., West Lafayette, IN (United States)
- Univ. of Wisconsin, Madison, WI (United States). Nelson Inst. for Environmental Studies
- National Center for Atmospheric Research, Boulder, CO (United States). Climate and Global Dynamics Division
The ongoing retreat of glaciers globally is one of the clearest manifestations of recent global warming associated with rising greenhouse gas concentrations. By comparison, the importance of greenhouse gases in driving glacier retreat during the most recent deglaciation, the last major interval of global warming, is unclear due to uncertainties in the timing of retreat around the world. Here we use recently improved cosmogenic-nuclide production-rate calibrations to recalculate the ages of 1,116 glacial boulders from 195 moraines that provide broad coverage of retreat in mid-to-low-latitude regions. This revised history, in conjunction with transient climate model simulations, suggests that while several regional-scale forcings, including insolation, ice sheets and ocean circulation, modulated glacier responses regionally, they are unable to account for global-scale retreat, which is most likely related to increasing greenhouse gas concentrations.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1565327
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 6; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Southern Ocean warming and Wilkes Land ice sheet retreat during the mid-Miocene
|
journal | January 2018 |
Glacier-based climate reconstructions for the last glacial-interglacial transition: Arthur's Pass, New Zealand (43°S): LAST GLACIAL-INTERGLACIAL TRANSITION, NEW ZEALAND
|
journal | November 2016 |
10Be age constraints on latest Pleistocene and Holocene cirque glaciation across the western United States
|
journal | January 2019 |
Climate during the Last Glacial Maximum in the Northern Sawatch Range, Colorado, USA
|
journal | October 2019 |
Similar Records
Rapid and early deglaciation in the central Brooks Range, Arctic Alaska
Local summer insolation and greenhouse gas forcing drove warming and glacier retreat in New Zealand during the Holocene
High-latitude warming initiated the onset of the last deglaciation in the tropics
Journal Article
·
Wed Mar 18 20:00:00 EDT 2015
· Geology
·
OSTI ID:1902021
Local summer insolation and greenhouse gas forcing drove warming and glacier retreat in New Zealand during the Holocene
Journal Article
·
Sun Jul 18 20:00:00 EDT 2021
· Quaternary Science Reviews
·
OSTI ID:1825368
High-latitude warming initiated the onset of the last deglaciation in the tropics
Journal Article
·
Sat Nov 30 19:00:00 EST 2019
· Science Advances
·
OSTI ID:1626013