| NSF Org: |
OPP Office of Polar Programs (OPP) |
| Recipient: |
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| Initial Amendment Date: | May 26, 2009 |
| Latest Amendment Date: | May 26, 2009 |
| Award Number: | 0838871 |
| Award Instrument: | Standard Grant |
| Program Manager: |
Peter Milne
OPP Office of Polar Programs (OPP) GEO Directorate for Geosciences |
| Start Date: | June 1, 2009 |
| End Date: | May 31, 2012 (Estimated) |
| Total Intended Award Amount: | $495,539.00 |
| Total Awarded Amount to Date: | $495,539.00 |
| Funds Obligated to Date: |
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| ARRA Amount: | $495,539.00 |
| History of Investigator: |
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| Recipient Sponsored Research Office: |
3090 CENTER GREEN DR BOULDER CO US 80301-2252 (303)497-1000 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
P.O. Box 3000 Boulder CO US 80307-3000 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): | ANT Ocean & Atmos Sciences |
| Primary Program Source: |
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| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.078 |
ABSTRACT
Abstract
Researchers at NCAR aim to address Antarctic climate variability on interannual, multidecadal and longer timescales over the past ~250 years as a means to better understand the underlying physical mechanisms controlling climate change in the southern polar region. A range of observational, modeling and proxy (e.g. ice core) information will be combined and interpreted.
Effort will be focused on the analysis and mechanistic interpretation of the interannual-to-multidecadal variability in the Antarctic ice core records over the past ~250 years. Analyses of observational ice core records will be used to define the leading patterns of variability and relate those to existing Antarctic temperature reconstructions and to tropical climate anomalies from various instrumental data sets. In particular, modeling experiments will be used to examine the relative roles of sea surface temperature forcing (tropical vs. extra-tropical) and direct atmospheric radiative forcing associated with changes in greenhouse gas and stratospheric ozone concentrations on Antarctic climate variability.
The modeling component will use existing and modified atmospheric general circulation simulations driven with observational history from 1870 to the present. An augmentation of the most recent CCSM CAM (Community Climate System Model, Community Atmospheric Model) model explicitly incorporating a water isotope tracer scheme will be used to evaluate the isotope model performance, and to broaden current interpretation of ice core records.
Participation in an ongoing and independently funded NCAR minority serving education effort (SOARS - Significant Opportunities in Atmospheric Research) is offered as a means of broadening participation in the atmospheric and related sciences.
"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
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