HR: 16:20h
AN: SH54B-01    [Abstracts]
TI: Solar-Induced Climate and Production-Change Impacts on Beryllium-10
AU: * Field, C V
EM: cfield@giss.nasa.gov
AF: Department of Earth and Environmental Sciences, Columbia University, New York, NY 10025, United States
AU: * Field, C V
EM: cfield@giss.nasa.gov
AF: NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, United States
AU: Schmidt, G A
EM: gschmidt@giss.nasa.gov
AF: NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, United States
AU: Shindell, D
EM: dshindell@giss.nasa.gov
AF: NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, United States
AB: The link between the production of the cosmogenic isotope Beryllium-10 and changes in the sun's magnetic activity makes 10Be archives important resources for understanding how solar activity may have varied in the past. Thanks to the excellent time resolution that ice core records provide, 10Be observations from Greenland and Antarctica have the potential to offer crucial insights. However since Earth's climate is subject to other types of influences aside from those directly related to solar variability, it is important to understand how to disentangle the confounding effects that heliomagnetic change and climate change can both have on 10Be snow concentration. In particular, prolonged solar minima (like the Maunder Minimum) have the potential to affect climate on larger temporal and spatial scales. Our recent climate simulations using the Goddard Institute for Space Studies ModelE general circulation model focus on calibrating the impacts that irradiance changes and climate changes can have on 10Be during periods such as the Maunder Minimum. The experiments illustrate the effects of a range of climate- and production-change scenarios in an effort to better understand the conditions under which simulated 10Be changes correspond to observed values.
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 1626 Global climate models (3337, 4928)
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
DE: 3344 Paleoclimatology (0473, 4900)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Joint Assembly