climate and the carbon cycle
DESCRIPTION
Climate and the Carbon Cycle. Gretchen Keppel-Aleks California Institute of Technology 16 October 2010. The Global Carbon Cycle. Fossil Fuel Source ~8. Atmosphere. Ocean exchange ~70. Land exchange ~120. Ocean Uptake ~ 2. Land Uptake ~ 3. Ocean. Biosphere. (LeQuere 2009). - PowerPoint PPT PresentationTRANSCRIPT
Climate and the Carbon Cycle
Gretchen Keppel-Aleks
California Institute of Technology
16 October 2010
(LeQuere 2009)
Land exchange ~120 Ocean exchange ~70
Fossil Fuel Source ~8
Land Uptake ~3Ocean Uptake ~2
fluxes [PgC yr-1]
Carbon is transported through natural reservoirs: the atmosphere, the biosphere, and the ocean
The Global Carbon Cycle
Atmosphere
OceanBiosphere
Earth’s Carbon Cycle
Respiration
Decomposition
Photosynthesis
NOAA ESRL
Fluxes between the biosphere and the atmosphere set the seasonal patterns in atmospheric CO2
Earth’s Carbon Cycle
Atmospheric CO2
Respiration Photosynthesis
Earth’s Carbon Cycle
Atmospheric CO2
Temperature
Respiration Photosynthesis
?
Feedbacks between climate and the carbon cycle affect natural fluxes of CO2
Terrestrial Carbon Cycle
Atmospheric CO2
Temperature
Respiration Photosynthesis
Humidity, Precipitation,Regional Climate
???
Feedbacks between climate and the carbon cycle affect natural fluxes of CO2
Changes in the concentration of atmospheric CO2 impact the ocean
(Hoegh-Guldberg et al., 2007 , Doney et al., 2009)
Ocean CO2 and Acidification
Changes in the concentration of atmospheric CO2 impact the ocean
(Hoegh-Guldberg et al., 2007 , Doney et al., 2009)
Ocean CO2 and Acidification
Climate - Carbon Cycle Links
Carbon is present in natural reservoirs (atmosphere, ocean, biosphere)
The growth of carbon in the atmospheric reservoir is the major contributor to climate change
Climate change will affect the cycling of carbon through natural reservoirs
Understanding carbon cycle feedbacks is crucial to predicting future climate