IMPLICC Implications and risks of engineering solar radiation to limit climate change An EU FP7 proj

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IMPLICC Implications and risks of engineering
solar radiation to limit climate change-An EU
FP7 project to study geoengineering options with
Earth system models

• Hauke Schmidt
• Max Planck Institute for Meteorology, Hamburg,
  Germany

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Project Partners
Scientific Advisors L. Bengtsson, P. Crutzen
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Geoengineering - Definition
Geoengineering may be defined as the
deliberate manipulation of the Earth system to
manage the climatic consequences of human
population and economic expansion. (Schneider,
2001)
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Some suggested options to engineer Earths energy
budget

• Long wave radiation
• Removal of CO2 from the atmosphere
• Plant Trees
• Carbon sequestration
• Ocean fertilization

• Short wave radiation
• Reduction of the absorbed solar radiation
• Whiten surfaces
• Whiten clouds
• Add particles in the middle atmosphere
• Space borne reflectors

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Two guidelines of the proposal

• Current Earth System Models have uncertainties
  and deficiencies -gt geoengineering experiments
  should be performed by a number of ESMs in a
  unified experimental setup
• Experiments should be designed in accordance to
  the CMIP5 protocol

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Simulation strategy for transient experiments
(proposal)
geoengineering
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New Scenarios for CMIP5, i.e. For IPCC-AR5

• So-called Representative Concentration Pathway
  (RCP) scenarios named by their radiative forcing
  in 2100 w.r.t. 1860.
• 4 RCPs from the published literature (cf. Moss et
  al., 2008)RCP8.5, RCP6.0, RCP4.5, RCP2.X

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Earth system models to be used

• ECHAM5-HAMMOZ/MPIOM
• based on ECHAM5 in a version as complete as
  feasible
• including at least atmospheric dynamics and
  physics, aerosols, atmospheric chemistry,
  ocean/ice but preferably also land vegetation,
  ocean BGC
• EMAC (ECHAM5-MESSY)
• CAM-Oslo
• LMDzT4

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The End

• For more information
• Contact me (hauke.schmidt_at_zmaw.de)
• http//implicc.zmaw.de