Climate Change Models

These models and simulations have been tagged “Climate Change”.

Related tagsGreenhouse EffectClimate

Insight diagram
The concept of 'CLOSING A FEEDBACK LOOP'  means that a loop is closed to affect the person or agents that originally are  responsible for an action so that they plainly feel its effects. This almost inevitable leads to corrective action. One of the reasons why climate change does not  arouse passion and action is that it is largely invisible and most people are not aware of it, although extreme weather events are beginning to change this somewhat. The schematic representation shows how systems thinking might help to draw attention to such situations by graphically connecting the dots to promote understand and hopefully action when people realize that there is a price to be paid for inaction.  Please note, however, that the loop does not describe dynamic behaviour in the normal system dynamics sense. 

WHEN THIS LOOP CLOSES SOME WILL SUFFER BADLY
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A model of a typical Australian sheep farm, where wool is the primary product, with first-cross fat lambs a secondary product.

This model attempts to model the behaviour in response to stocking rates and finances
MOULINS_VA Farm - System Dynamics Major Project
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DRAFT conceptual model of climate change connections in Yamuna river project.
Clone of Yamuna River Restoration and Climate Change
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Klimawandel
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Capitalism is in crisis and climate change disruption is now beginning to hit the bottom line. Insurance companies know this well. According to a report by the Bank of England, insured losses have risen from $10 000 million in 1985 to $50 000 million in 2015. Climate change cannot be reversed, and extreme weather events  will undoubtedly get worse in the future strengthening the disruptive effects shown in the CLD.  Another dynamic is that companies will continue to automate and, as The Economic Policy Institute has shown, fail to reflect  productivity gains in workers' salaries. The result, stagnating salaries is disastrous for demand, given that capitalism needs endlessly rising demand and consumption. A further serious problem is that as climate change gets worse there will be increasing demands for companies to assume their responsibility and bear the costs of negative externalities.  The CLD shows these factors which are likely to lead to the collapse of the system: when capitalism can no longer generate 'capital' it has stopped to serves any useful purpose. 

DOES THIS DYNAMIC SPELL THE END OF CAPITALISM
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The 3-machines energy transition model is a global system dynamics model based on energy balances,  and used to explore the energy frontiers for stabilizing the Earth's climate. The model comprises a hypothetical fossil engine, a solar engine including energy storage, and a carbon scrubber. These machines interact with Earth's carbon cycle and satisfy humanity’s energy demand. A detailed description can be accessed here: https://osf.io/fcwt8/
Clone of 3 machines release1
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There is now substantial evidence that three unstoppable reinforcing feedback systems that can only accelerate global warming have been triggered in the Arctic. R2 illustrates a process whereby frozen methane hydrate,  which exists in enormous quantities on the seabed of the shallow Arctic Ocean shelf, is breaking up as the ocean warms. This leads to methane gas, a greenhouse gas about 20 times more powerful than C02, bubbling up to the surface. R1 shows that as the ice cover of the ocean melts and shrinks, less sunlight is reflected back into space and more is absorbed by  the ocean, warming it as a consequence. The warmer ocean water and warmer air temperature will then melt more ice, but it will also break up more methane hydrates.   R3 describes a similar process where melting permafrost releases methane into the atmosphere, making the situation even worse. These processes are multiplicative, they reinforce each other.  Below are links to three articles that provide  evidence that this is going on now. Systems thinking tells us about reinforcing feedback loops and the associated exponential growth. Taking this and the evidence provided by the articles into account the conclusion clearly points to increasing and accelerated global warming. The recent Paris agreement on global warming may have come too late!

http://www.independent.co.uk/news/science/vast-methane-plumes-seen-in-arctic-ocean-as-sea-ice-retreats-6276278.html

http://www.theguardian.com/environment/2005/aug/11/science.climatechange1

https://www.newscientist.com/article/dn23205-major-methane-release-is-almost-inevitable/

Clone of Accelerated Global Warming
Insight diagram
Temperature Stress Mortality Simulator: for the older (70+ years) population of West Dorset, UK using the UKCP09 SRES A1B Emission Scenario.
Clone of Temperature Stress Mortality Simulator
Insight diagram
There is now substantial evidence that three unstoppable reinforcing feedback systems that can only accelerate global warming have been triggered in the Arctic. R2 illustrates a process whereby frozen methane hydrate,  which exists in enormous quantities on the seabed of the shallow Arctic Ocean shelf, is breaking up as the ocean warms. This leads to methane gas, a greenhouse gas about 20 times more powerful than C02, bubbling up to the surface. R1 shows that as the ice cover of the ocean melts and shrinks, less sunlight is reflected back into space and more is absorbed by  the ocean, warming it as a consequence. The warmer ocean water and warmer air temperature will then melt more ice, but it will also break up more methane hydrates.   R3 describes a similar process where melting permafrost releases methane into the atmosphere, making the situation even worse. These processes are multiplicative, they reinforce each other.  Below are links to three articles that provide  evidence that this is going on now. Systems thinking tells us about reinforcing feedback loops and the associated exponential growth. Taking this and the evidence provided by the articles into account the conclusion clearly points to increasing and accelerated global warming. The recent Paris agreement on global warming may have come too late!

http://www.independent.co.uk/news/science/vast-methane-plumes-seen-in-arctic-ocean-as-sea-ice-retreats-6276278.html

http://www.theguardian.com/environment/2005/aug/11/science.climatechange1

https://www.newscientist.com/article/dn23205-major-methane-release-is-almost-inevitable/

Clone of Clone of Accelerated Global Warming
Insight diagram
Pope Francis, in his recent encyclical on climate change, said that social movements are critical in promoting action on global warming. This simple CLD shows how the influence of climate-change movements could affect both public opinion and the government. An important aspect is that the activism of such movements will have a negative influence on the prestige of the fossil-fuel companies. This in turn will weaken their capacity to influence and to exert pressure on the government.  As the movements act, pressure on the government will increase but simultaneously the capacity of the fossil fuel industry to pressure  the government will decrease. As a result, the government will find it easier to push trough legislation to force fossil fuel companies to keep unburnable reserves in the ground. Climate change moments can contribute decisively to bring about urgently needed action on global warming
Climate-Change Movements: Influence on public opinion and government
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L'idée est de percevoir les "dynamiques" des "systèmes" à l'oeuvre dans le changement climatique à l'échelle planétaire. Pour cela comprendre les stocks, flux, boucles de rétroactions (lorsqu'un phénomène X influx sur un autre Y, qui influx à son tour sur X) permet de faire apparaître les liens de causes à conséquences parfois difficilement perceptibles.

L'idée étant de s'adosser sur le succès de la Fresque du Climat, qui a vulgarisé la compréhension du changement climatique pour désormais l'analyser grâce à la dynamique des systèmes (et comprendre ce qu'est un modèle, son utilité).


Sur la base du travail de Scott Formann-Roe
Mise en système du changement climatique
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Clone of Klimawandel
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A model of the potential impact on the elderly population (75+ years) from heat stress, which is increased by climate change in the UK.
Temperature Stress
Insight diagram
Temperature Stress Mortality Simulator: for the older (70+ years) population of West Dorset, UK using the UKCP09 SRES A1B Emission Scenario.
Clone of Temperature Stress Mortality Simulator
Insight diagram
A model of the potential impact on the elderly population (75+ years) from heat stress, which is increased by climate change in the UK.
Clone of Heat Stress from Climate Change
Insight diagram
There is now substantial evidence that three unstoppable reinforcing feedback systems that can only accelerate global warming have been triggered in the Arctic. R2 illustrates a process whereby frozen methane hydrate,  which exists in enormous quantities on the seabed of the shallow Arctic Ocean shelf, is breaking up as the ocean warms. This leads to methane gas, a greenhouse gas about 20 times more powerful than C02, bubbling up to the surface. R1 shows that as the ice cover of the ocean melts and shrinks, less sunlight is reflected back into space and more is absorbed by  the ocean, warming it as a consequence. The warmer ocean water and warmer air temperature will then melt more ice, but it will also break up more methane hydrates.   R3 describes a similar process where melting permafrost releases methane into the atmosphere, making the situation even worse. These processes are multiplicative, they reinforce each other.  Below are links to three articles that provide  evidence that this is going on now. Systems thinking tells us about reinforcing feedback loops and the associated exponential growth. Taking this and the evidence provided by the articles into account the conclusion clearly points to increasing and accelerated global warming. The recent Paris agreement on global warming may have come too late!

http://www.independent.co.uk/news/science/vast-methane-plumes-seen-in-arctic-ocean-as-sea-ice-retreats-6276278.html

http://www.theguardian.com/environment/2005/aug/11/science.climatechange1

https://www.newscientist.com/article/dn23205-major-methane-release-is-almost-inevitable/

Clone of Clone of Accelerated Global Warming
Insight diagram
Clone of Clone of la deforestación y el efecto invernadero
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DRAFT conceptual model of climate change connections in Yamuna river project.
Yamuna River Restoration and Climate Change With MSW
5 months ago
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Narrative influence model sketching influence links in energy-economy-emissions



Basic energy-economy-emissions influence
Insight diagram
Temperature Stress Mortality Simulator: for the older (70+ years) population of West Dorset, UK using the UKCP09 SRES A1B Emission Scenario.
Clone of Temperature Stress Mortality Simulator
Insight diagram

If all Americans believed that extreme weather events, droughts and wildfires are primarily caused by climate change they would soon react and demand immediate action from their political leaders. It is likely that this will happen fairly soon because of the dynamic hidden in the phrase 'Climate Change'. Wolfgang von Goethe the famous German poet and scientist said  ''we only see what we know". Cognitive psychology largely agrees and says that we only understand what we see - and give importance to it -  if we have a schema  (mental model) for what we are looking at.  As the terms 'Climate Change' become more widely used people will try to understand what they mean and start to construct schemas. As a result of this process they will soon  see  extreme weather events and wild fire in a different light as the occur again and again - after all, climate scientists told us that  their numbers and severity would  increase as a result of climate change. This simple CLD tries to illustrate this dynamic. It suggests that if you want to speed up this process, a good strategy would be to point out at every occasion possible that an increase of extreme weather events and droughts is precisely what climate scientists predicted!

THE WORDS 'CLIMATE CHANGE' GENERATE A POWERFUL DYNAMIC
Insight diagram
Temperature Stress Mortality Simulator: for the older (70+ years) population of West Dorset, UK using the UKCP09 SRES A1B Emission Scenario.
Clone of Temperature Stress Mortality Simulator
Insight diagram
Temperature Stress Mortality Simulator: for the older (70+ years) population of West Dorset, UK using the UKCP09 SRES A1B Emission Scenario.
Clone of Temperature Stress Mortality Simulator
Insight diagram
Social movements have a major role to play in forcing politicians to act on climate change. This opinion has been clearly expressed by Pope Francis in his encyclical on climate change and, amongst others, also by Naomi Klein in her book 'This changes Everything'. The CLD suggests the need to strengthen the reinforcing loops R1 and R2 representing the activities of  environmental movements and also to disrupt the reinforcing loop R3 representing climate change  deniers. The most effective way in my opinion  to strengthen R1 and R2 is to weaken R3. This could be done by countering false arguments by pointing out on all occasions that the debate on climate change is over: climate scientists, by an overwhelming consensus, have established that anthropogenic global warming is a scientific fact. It could also be done by educating the public. The urgency of the situation suggests that the most effective way of doing this could be by closing negative feedback loops, for example, by linking extreme weather events, supported by graphic images, to global warming. Global warming can also be linked to inequality, poverty, larger forest fires,  coral reef bleaching, etc. The Pope has started the work by establishing these links in his encyclical. Of course, these are merely suggestions. Looking at the CLD carefully might well reveal other effective points of intervention
Clone of CLIMATE CHANGE INERTIA