Open letter to Dr Rajendra K. Pachauri, IPCC chair
Dear Dr Pachauri,
The Climate Congress presents an important opportunity to present all facets of the current situation, explore the ramifications, and suggest appropriate actions. The aim must be, as far as possible, to address the threat of a disastrous multi-metre rise in sea level and catastrophic multi-degree rise in temperature – whenever they might occur.
We would like to suggest a rather simple division of the problem/solution domain:
About: Reducing emissions of greenhouse gases into the atmosphere.
Target: Achieve near-zero carbon economies throughout the world by end century.
Difficulties: International agreement, life-style changes, high cost.
Rationale: Long-term sustainability.
Part B : Carbon stock management
About: Removing CO2 from the atmosphere by various means.
Target: Reduce levels below 350 ppm over next three decades.
Difficulties: May involve change in agricultural practice, worldwide. Side-effects may be difficult to anticipate.
Part C : Heat transfer and radiation management
About: Mainly about albedo engineering and solar radiation management.
Priority target: Cool the Arctic sufficient to halt retreat of Arctic sea ice within three years.
Difficulties: Seen as tampering with the environment, and therefore intrinsically dangerous; but cost is low and side-effects should be manageable.
Rationale: Reduce risk of massive methane discharge and stabilise the Greenland ice sheet.
 Climate Safety report, which can be downloaded from:
 Climate Congress, Session 1, in:
 Solar Radiation Management: