Carbon Dioxide Concentrations in the Atmosphere
A closer look at the carbon dioxide changes within the last thousand
years can be seen in the graphic on the left. The concentrations
of carbon dioxide in the atmosphere, were measured in the bubbles
from an Antarctic ice core from Law Dome near Australia's Casey
Station. The Law Dome ice core is at a location where the snow
accumulation is much higher than at Vostok. Thus, the time scale
for the Law Dome core is expanded and it can provide us with
more detailed information about recent climate changes.
Concentrations of carbon dioxide measured in the air bubbles
trapped in the ice are shown in Antarctic ice core from Law
Dome near Australia's Casey Station.
Concentration of Carbon Dioxide from trapped
air measurements for the DE08 ice core near the summit of Law
Dome, Antarctica. (Data measured by CSIRO Division of Atmospheric
Research from ice cores supplied by Australian Antarctic Division).
Dr. T.H. Jacka, Glaciology Program,Antarctic Cooperative Research
Centre and Australian Antarctic Division.
QUES. a: Explain what is significant about
the change in carbon dioxide concentration with time as viewed
in the graphic?
QUES. b: What energy consuming and carbon
dioxide producing events were taking place in most of the Northern
Hemisphere at the time, (1850, 1900 and years following), of
the dramatic increase in the carbon dioxide concentration?