Less ice, less tilt, less chill: The influence of a seasonally ice-free Arctic Ocean and reduced obliquity on early Paleogene climate

Geology

Volumn 32, Issue 6, 2004, Pages 477-480

  Sewall, Jacob ^a   Sloan, Lisa Cirbus ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Eocene; Obliquity; Paleocene; Paleoclimate; Paleogene

Indexed keywords

GREENHOUSE GASES; SEA-SURFACE TEMPERATURES;

CLIMATOLOGY; GREENHOUSES; ICE;

GEOLOGY;

CLIMATE FORCING; GREENHOUSE GAS; OBLIQUITY; PALEOCLIMATE; PALEOGENE; SEA SURFACE TEMPERATURE;

ARCTIC OCEAN;

EID: 3142678003     PISSN: 00917613     EISSN: None     Source Type: Journal    
DOI: 10.1130/G20295.1     Document Type: Article

References (31)

1. Barron, E.J., 1984, Climatic implications of the variable obliquity explanation of Cretaceous-Paleogene high-latitude floras: Geology, v. 12, p. 595-598.
2. Basinger, J.F., 1991, The fossil forests of the Buchanan Lake Formation (early Tertiary), Axel Heiberg Island Canadian Arctic Archipelago: Preliminary floristics and paleoclimate, in McMillan, N.J., ed., Tertiary fossil forests of the Geodetic Hills, Axel Heiberg Island, Arctic Archipelago: Geological Survey of Canada Bulletin 403, p. 39-65.
3. Boville, B.A., Kiehl, J.T., Rasch, P.J., and Bryan, F.O., 2001, Improvements to the NCAR CSM-1 for transient climate simulations: Journal of Climate, v. 14, p. 164-179.
4. Coffin, M.F., and Gahagan, L.M., 1995, Ontong-Java and Kerguelen Plateaus-Cretaceous Iceland: Geological Society [London] Journal, v. 152, p. 1047-1052.
5. Greenwood, D.R., and Wing, S.L., 1995, Eocene continental climates and latitudinal temperature gradients: Geology, v. 23, p. 1044-1048.
6. Huber, M., and Sloan, L.C., 2001, Heat transport, deep waters, and thermal gradients: Coupled simulation of an Eocene greenhouse climate: Geophysical Research Letters, v. 28, p. 3481-3484.
7. Jiang, X.H., and Peltier, W.R., 1996, Ten million year histories of obliquity and precession: The influence of the ice age: Earth and Planetary Science Letters, v. 139, p. 17-32.
8. Johnson, K.R., and Ellis, B., 2002, A tropical rainforest in Colorado 1.4 million years after the Cretaceous-Tertiary boundary: Science, v. 296, p. 2379-2383.
9. Lamb, S., and Hoke, L., 1997, Origin of the high plateau in the Central Andes, Bolivia, South America: Tectonics, v. 16, p. 623-649.
10. Laskar, J., Joutel, F., and Boudin, F., 1993, Orbital, precessional, and insolation quantities for the Earth from -20 Myr to ±10 Myr: Astronomy and Astrophysics, v. 270, p. 522-533.
11. LePage, B.A., 2003, A new species of Thuja (Cupressaceae) from the Late Cretaceous of Alaska: Implications of being evergreen in a polar environment: American Journal of Botany, v. 90, p. 167-174.
12. Levrard, B., and Laskar, J., 2003, Climate friction and the Earth's obliquity: Geophysical Journal International, v. 154, p. 970-990.
13. McIntyre, D.J., 1991, Pollen and spore flora of an Eocene forest, eastern Axel Heiberg Island, N.W.T., in McMillan, N.J., ed., Tertiary fossil forests of the Geodetic Hills, Axel Heiberg Island, Arctic Archipelago: Geological Survey of Canada Bulletin 403, p. 83-97.
14. Molnar, P., and Tapponnier, P., 1975, Cenozoic tectonics of Asia-Effects of a continental collision: Science, v. 189, p. 419-426.
15. 2-rich ancient polar environment: Nature, v. 424, p. 60-62.
16. Sewall, J.O., and Sloan, L.C., 2001, Equable Paleogene climates: The result of a stable, positive Arctic oscillation?: Geophysical Research Letters, v. 28, p. 3693-3695.
17. Sewall, J.O., Sloan, L.C., Huber, M., and Wing, S., 2000, Climate sensitivity to changes in land surface characteristics: Global and Planetary Change, v. 26, p. 445-465.
18. 2 levels in the early-middle Paleogene: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 193, p. 113-123.
19. Sloan, L.C., 1994, Equable climates during the early Eocene-Significance of regional paleogeography for North American climate: Geology, v. 22, p. 881-884.
20. Sloan, L.C., and Barron, E.J., 1992, A comparison of Eocene climate model results to quantified paleoclimatic interpretations: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 93, p. 183-202.
21. Sloan, L.C., and Pollard, D., 1998, Polar stratospheric clouds: A high latitude warming mechanism in an ancient greenhouse world: Geophysical Research Letters, v. 25, p. 3517-3520.
22. Sloan, L.C., and Rea, D.K., 1996, Atmospheric carbon dioxide and early Eocene climate: A general circulation modeling sensitivity study: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 119, p. 275-292.
23. Sloan, L.C., Walker, J.C.G., and Moore, T.C., 1995, Possible role of oceanic heat transport in early Eocene climate: Paleoceanography, v. 10, p. 347-356.
24. Sloan, L.C., Huber, M., Crowley, T.J., Sewall, J.O., and Baum, S., 2001, Effect of sea surface temperature configuration on model simulations of "equable" climate in the early Eocene: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 167, p. 321-335.
25. Tripati, A., Zachos, J., Marincovich, L., and Bice, K., 2001, Late Paleocene Arctic coastal climate inferred from molluscan stable and radiogenic isotope ratios: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 170, p. 101-113.
26. Valdes, P.J., and Sellwood, B.W., 1992, A palaeoclimate model for the Kimmeridgian: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 95, p. 47-72.
27. Wilf, P., 2000, Late Paleocene-early Eocene climate changes in southwestern Wyoming: Paleobotanical analysis: Geological Society of America Bulletin, v. 112, p. 292-307.
28. Wilf, P., Wing, S.L., Greenwood, D.R., and Greenwood, C.L., 1998, Using fossil leaves as paleoprecipitation indicators: An Eocene example: Geology, v. 26, p. 203-206.
29. Wing, S.L., and Greenwood, D.R., 1993, Fossils and fossil climate-The case for equable continental interiors in the Eocene: Royal Society of London Philosophical Transactions, ser. B, v. 341, p. 243-252.
30. Wolfe, J.A., 1978, Paleobotanical interpretation of Tertiary climates in the Northern Hemisphere: American Scientist, v. 66, p. 694-703.
31. Wolfe, J.A., 1980, Tertiary climates and floristic relationships at high latitudes in the Northern Hemisphere: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 30, p. 313-323.