Antarctica's orbital beat

Science

Volumn 325, Issue 5944, 2009, Pages 1085-1086

  Huybers, Peter ^a  

^a HARVARD UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CARBON DIOXIDE; DEUTERIUM;

CLIMATE CHANGE; GLACIATION; ICE CORE; INSOLATION; MARINE ENVIRONMENT; ORBITAL FORCING; PRECIPITATION (CLIMATOLOGY); SEASONALITY; SIMULATION; SOUTHERN HEMISPHERE;

ANTARCTICA; ASTRONOMY; CLIMATE CHANGE; ENVIRONMENTAL TEMPERATURE; ICE CORE RECORD; ISOTOPE ANALYSIS; LOW TEMPERATURE; POLAR ICE CAP; PRIORITY JOURNAL; RADIATION DETECTION; SEASONAL VARIATION; SHORT SURVEY;

ANTARCTIC PLATEAU; ANTARCTICA; EAST ANTARCTICA;

EID: 69549122043     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1176186     Document Type: Short Survey

References (17)

1. J. Mercer, Climate Processes and Climate Sensitivity, Geophysical Monograph 29, M. Ewing, Ed. (American Geophysical Union, 1984), pp. 307-313.
2. J. Imbrie et al., Paleoceanography 7, 701 (1992).
3. M. Milankovitch, Kanon der Erdbestrahlung und seine Andwendung auf das Eiszeitenproblem (Royal Serbian Academy, Belgrade, 1941).
4. J. Jouzel et al., Science 317, 793 (2007).
5. J.-E. Lee, I. Fung, D. J. DePaolo, B. Otto-Bliesner, J. Geophys. Res. 113, D19109 (2008).
6. K. Kawamura et al., Nature 448, 912 (2007).
7. J. Kaiser et al., Paleoceanography 20, PA4009 (2005).
8. D. Rubincam, Theor. Appl. Climatol. 79, 111 (2004).
9. P. Huybers, G. Denton, Nat. Geosci. 1, 787 (2008).
10. A. Timmermann et al., J. Clim. 22, 1626 (2009).
11. Summer duration is defined as the number of days on which diurnal average insolation exceeds 250 W/m2 at 77°S, and austral spring insolation is the diurnal average insolation on 10 September at 65°S. Other definitions substantially alter the structure of the variability.
12. C. Lorius et al., Nature 347, 139 (1990).
13. P. Huybers, C. Wunsch, Geophys. Res. Lett. 30, 2011 (2003).
14. T. Laepple et al., Geophys. Res. Abstr. 11, EGU2009-9137 (2009).
15. M. Hutterli, L. Sime, Geophys. Res. Abstr. 11, EGU2009-2806 (2009).
16. Eccentricity mostly amplifies the effect of precession and thus is not treated as a separate orbital forcing, ignoring its small influence on annual mean insolation. In this sense, the orbital period variability is distinct from the ̃100,000 year glacial/interglacial variations that account for most of the temperature changes.
17. A fourth-order Butterworth filter with a passband between 1/41,000 and 1/19,000 years was used for filtering. The insolation variability has statistically significant coherence with the Antarctic?Drecord (9), which also holds when the full 800,000 years of the record is used.