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Air Quote by Nigel Calder

“It's likely that CO2 has some warming effect, but real proof of that hypothesis is tricky. You have to confirm by observation exactly how the CO2 changes the situation at different altitudes in the atmosphere and in different regions of the world. For example, CO2 is supposed to warm the upper air…” quote by Nigel Calder
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“It's likely that CO2 has some warming effect, but real proof of that hypothesis is tricky. You have to confirm by observation exactly how the CO2 changes the situation at different altitudes in the atmosphere and in different regions of the world. For example, CO2 is supposed to warm the upper air faster than the surface, but the measurements don't show that happening. When the CO2 effect is eventually pinned down, it will probably turn out to be weaker and much less worrisome than predicted by the global warming theorists.”

Nigel Calder

About This Quote

Source Article: Climate Science Discussion, 2005

CO2’s warming impact is debated; observational data at various altitudes and regions is needed to confirm its strength, which may be less than predicted.

In simple terms: CO2 warming effect is uncertain.

Key Takeaway

Seek detailed atmospheric data.

Themes

climate science uncertainty measurement

Mood

skeptical analytical

Type

scientific informative

When to use this quote

  • policy making
  • research planning
  • public communication
  • education

Key Concepts

radiative forcing feedback loops modeling

Questions to Reflect On

  • What evidence would strengthen the case?
  • How to address public concerns?
A Different Perspective

Complex climate systems make precise attribution difficult.

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