نتایج جستجو برای: paleoclimate
تعداد نتایج: 1419 فیلتر نتایج به سال:
We investigate the effects of varying Saturn’s orbit on the atmospheric circulation and surface methane distribution of Titan. Using a new general circulation model of Titan’s atmosphere, we simulate its climate under four characteristic configurations of orbital parameters that correspond to snapshots over the past 42 kyr, capturing the amplitude range of long-period cyclic variations in eccen...
s with Programs 1980, v. 12, p. 501. Robaszynski, F., Alcayde', G., Amedro, F. Badillet, Guy, Damott, R., Foucher, J. C., Jardine, S., Legoux, O., Manivit, H., Monclardin, C., and Sornay, J., 1982, Le Turonien de la region-type: Saumiorois et Touraine, stratigraphique, biozonations, sedimentologique: Bulletin Centres Recherches Exploration et Production, Elf-Aquitaine, v. 6, no. 1, p. 119-225. ...
Introduction Conclusions References
This paper briefly surveys areas of paleoclimate modeling notable for recent progress. New ideas, including hypotheses giving a pivotal role to sea ice, have revitalized the low-order models used to simulate the time evolution of glacial cycles through the Pleistocene, a prohibitive length of time for comprehensive general circulation models (GCMs). In a recent breakthrough, however, GCMs have ...
Some of the most valuable paleoclimate archives yet recovered are the multi-proxy records from the Greenland GISP2 and GRIP ice cores. The crucial importance of these data arises in part from the strong correlations that exist between the Greenland δ18O records and isotopic or other proxies in numerous other Northern Hemisphere paleoclimate sequences. These correlations could, in principle, all...
A large number of investigations of paleoclimate have noted the influence of a ∼ 200 year oscillation which has been related to the De Vries/Suess cycle of solar activity. As such studies were concerned mostly with local climate, we have used extensive northern hemispheric proxy data sets of Büntgen and of 5 Christiansen/Ljungqvist together with a southern hemispheric tree-ring set, all with 1 ...
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