Equilibrium Climate Sensitivity

Click For Summary

Discussion Overview

The discussion centers on the concept of Equilibrium Climate Sensitivity (ECS) and the significance of the term 'equilibrium' in this context. Participants explore its relevance in understanding climate dynamics, particularly in relation to energy imbalances caused by increased CO2 levels. The scope includes theoretical implications and applications in various fields.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions the necessity of the term 'equilibrium' in ECS, seeking clarification on its relevance compared to 'climate sensitivity.'
  • Another participant provides a link to a definition and suggests that the term 'climate sensitivity' is not fully accurate without 'equilibrium,' implying a need for precision in terminology.
  • A different viewpoint emphasizes the importance of equilibrium in applied sciences, noting that small deviations from equilibrium can have significant consequences in various systems, including health.
  • One participant discusses the theory of anthropogenic global warming (AGW), explaining that doubling CO2 levels leads to an energy imbalance that affects atmospheric temperatures, while other components of the climate system may take longer to reach equilibrium.

Areas of Agreement / Disagreement

Participants express differing views on the relevance and implications of the term 'equilibrium' in ECS. There is no consensus on the necessity of the term or its implications for understanding climate sensitivity.

Contextual Notes

Some participants express uncertainty about the clarity of the initial question, suggesting it may be vague or lacking in focus. The discussion also highlights the complexity of climate systems and the time scales involved in reaching equilibrium.

Gondur
Messages
25
Reaction score
0
Equilibrium Climate Sensitivity - what is the relevance of the word 'equilibrium' - why not 'climate sensitivity?'
Hope you can help.
 
Earth sciences news on Phys.org
Here is the precise definition and the math behind the term:
https://www.ipcc.ch/ipccreports/tar/wg1/345.htm

And not climate sensitivity, that is the correct full term according to the paper.

This question is vague and seems like what some folks might term as a throwaway or a lead-in question. What actually are you trying to find or explain?
 
Gondur said:
Equilibrium Climate Sensitivity - what is the relevance of the word 'equilibrium' - why not 'climate sensitivity?'
Hope you can help.
The emphasis is the equilibrium or balanced state and the sensitivity of the system to a departure from equilibrium. Much of applied science, e.g., process engineering such as power generation, operation of aircraft or spacecraft , chemical manufacturing, is concerned about control and how the system responds to deviations or perturbations from steady-state. In health care, doctors would be concerned if one's temperature deviated more than a few degrees F, e.g., having a temperature of 104°F as compared to 97.4 to 99°F, means one has a fever. If the temperature drops much lower (body temperature falls below 95 F (35 C)), one is experiencing hypothermia.

When one's body temperature drops, one's heart, nervous system and other organs can't work normally. Left untreated, hypothermia can eventually lead to complete failure of your heart and respiratory system and eventually to death.
Ref: https://www.mayoclinic.org/diseases-conditions/hypothermia/symptoms-causes/syc-20352682

Seemingly small temperature differences from equilibrium can have significant consequences to a system.
 
  • Like
Likes   Reactions: jim mcnamara
Gondur said:
Equilibrium Climate Sensitivity - what is the relevance of the word 'equilibrium' - why not 'climate sensitivity?'
Hope you can help.
At the very center of the theory of AGW, is the idea that doubling the CO2 level would create an energy imbalance
between the energy entering the top of the atmosphere and the energy leaving the top of the atmosphere for space.
This imbalance will force portions of the atmosphere to increase in temperature.
The forcing of the atmospheric gas temperature would be rather quick, but other parts of the system (Oceans, soil, ect.)
could talk much longer, even decades to come back into equilibrium with the new energy level.
 

Similar threads

  • · Replies 18 ·
Replies
18
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 13 ·
Replies
13
Views
4K
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
Replies
3
Views
4K
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 6 ·
Replies
6
Views
3K
Replies
5
Views
2K