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Thwaites: The Future of Thwaites Glacier and its Contribution to Sea-level Rise
Considerable uncertainty remains in projections of future ice loss from West Antarctica. Reducing this uncertainty is an international priority that was recently underscored by the Scientific Committee on Antarctic Research in its “Horizon Scan 2020” (SCAR, 2015). The recent U.S. National Academy of Sciences, Engineering, and Medicine report (A Strategic Vision for NSF Investments in Antarctic and Southern Ocean Research, 2015) places prediction of ice mass loss from the West Antarctic Ice Sheet (WAIS) as the top priority for Antarctic research, and singles out Thwaites Glacier as a “region of particular concern”.
Building on this community priority, and recognizing that such research is becoming an increasingly global endeavor with demands that exceed the capacities of any one nation, NSF and the UK Natural Environment Research Council (NERC) have developed this joint program with the objective to substantially improve both decadal and longer-term (century-to-multi-century) projections of ice loss and sea-level rise originating from Thwaites Glacier.
Since the 1990s, satellites have shown accelerating ice loss driven by ocean change in five neighboring glacier catchments, including Thwaites Glacier, that drain more than one third of the WAIS. The rate of ice loss there doubled in six years and now accounts for about 10 percent of global sea-level rise. The most rapid ice loss is currently from Pine Island Glacier, which has been the focus of the NERC iSTAR Programme and NSF-funded science. Recent studies indicate the greatest risk for future rapid sea-level rise now arises from Thwaites Glacier due to the large changes already underway, the potential contribution to sea-level rise, and the societally relevant timescales of decades to centuries over which major, irreversible changes are possible in the system.
The program will have a direct and significant impact on understanding the stability of marine ice sheets and specifically the West Antarctic Ice Sheet in the vicinity of Thwaites Glacier, and will contribute to the ice-sheet modeling community capability to simulate ice sheets and to reduce the uncertainties in sea-level projections. In addition, the program will contribute to improving risk assessments that coastal communities need for decisions about adaptation and long-range planning.
Full Proposal Deadline Date: March 1, 2017
Each proposal must have a US and UK Principal Investigator (PI). An individual may appear as PI on no more than one proposal and appear on no more than two proposals in total, whether as co-PI, Senior Personnel, or consultant (or any similar designation).
Estimated Number of Awards: 5 to 8
Total (combined US and UK) project research budgets may be up to a maximum of $4,000,000 for up to five years.
Anticipated Funding Amount: $20,000,000 to $25,000,000
Awards are anticipated to begin after October 1, 2017, pending availability of funds. The total anticipated funding amount is the combined total of NSF and NERC research funds. If a project is recommended for funding, NSF will support the US component of the project and NERC will separately support the UK component of the project.