Atmospheric Carbon Dioxide and Aerosols: Effects of Large Increases on Global Climate

Science ◽  
1971 ◽  
Vol 173 (3992) ◽  
pp. 138-141 ◽  
Author(s):  
S. I. Rasool ◽  
S. H. Schneider
Keyword(s):  
Carbon Dioxide ◽  
Atmospheric Carbon Dioxide ◽  
Global Climate ◽  
Atmospheric Carbon

Southern Ocean upwelling, Earth’s obliquity, and glacial-interglacial atmospheric CO2 change

Science ◽  
2020 ◽  
Vol 370 (6522) ◽  
pp. 1348-1352
Author(s):  
Xuyuan E. Ai ◽  
Anja S. Studer ◽  
Daniel M. Sigman ◽  
Alfredo Martínez-García ◽  
François Fripiat ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Late Pleistocene ◽  
Atmospheric Carbon Dioxide ◽  
Global Climate ◽  
Nitrogen Isotope ◽  
Ice Ages ◽  
Glacial Cycles ◽  
Atmospheric Carbon ◽  
Carbon Dioxide Levels ◽  
The Antarctic

Previous studies have suggested that during the late Pleistocene ice ages, surface-deep exchange was somehow weakened in the Southern Ocean’s Antarctic Zone, which reduced the leakage of deeply sequestered carbon dioxide and thus contributed to the lower atmospheric carbon dioxide levels of the ice ages. Here, high-resolution diatom-bound nitrogen isotope measurements from the Indian sector of the Antarctic Zone reveal three modes of change in Southern Westerly Wind–driven upwelling, each affecting atmospheric carbon dioxide. Two modes, related to global climate and the bipolar seesaw, have been proposed previously. The third mode—which arises from the meridional temperature gradient as affected by Earth’s obliquity (axial tilt)—can explain the lag of atmospheric carbon dioxide behind climate during glacial inception and deglaciation. This obliquity-induced lag, in turn, makes carbon dioxide a delayed climate amplifier in the late Pleistocene glacial cycles.

Modelling the global climate response to orbital forcing and atmospheric carbon dioxide changes

Nature ◽  
1984 ◽  
Vol 310 (5980) ◽  
pp. 757-759 ◽  
Author(s):  
Nicklas G. Pisias ◽  
Nicholas J. Shackleton
Keyword(s):  
Carbon Dioxide ◽  
Atmospheric Carbon Dioxide ◽  
Global Climate ◽  
Climate Response ◽  
Orbital Forcing ◽  
Atmospheric Carbon
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