Climate Change Models

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

Related tagsGreenhouse EffectClimate

 A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth ( primary source ). And a simple model of carbon dioxide sources and sinks in the atmosphere ( primary source ).
A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth (primary source). And a simple model of carbon dioxide sources and sinks in the atmosphere (primary source).

The energy model assumes inflowing short-wave solar radiation that does not interact with the atmosphere. A fraction of this is reflected immediately (e.g. by snow and ice cover). The remaining is absorbed 🌎 and re-radiated as long-wave infrared which can be captured by the atmosphere ☁️. The fraction captured by the atmosphere is related to the level of Carbon Dioxide in the atmosphere.

This model tracks Carbon Dioxide emissions from burning fossil fuels 🏭 and land use changes 🚜 (e.g. deforestation). It also tracks removal of Carbon Dioxide from the atmosphere into a land sink 🌲 (e.g. vegetation) and the an ocean sink 🏖.

🧪 Experiment with different levels of emissions to see their impact on global average temperatures. You can also compare predicted temperatures and Carbon Dioxide levels to historical data.
11 months ago
People, generally, do not seem to be conscious of, or care
about, the enormous dangers of climate change and even the possibility of a
devastating war in the Korean peninsula that could turn nuclear. They carry on
with their routine and banal conversations as if that was all that mattered. In
the 60
People, generally, do not seem to be conscious of, or care about, the enormous dangers of climate change and even the possibility of a devastating war in the Korean peninsula that could turn nuclear. They carry on with their routine and banal conversations as if that was all that mattered. In the 60s there were peace demonstration, there was more awareness and public engagement in the face of the thread of nuclear war. Could the pressures and demands of modern capitalism, now no longer tamed by a competing communist system that could potentially appear to be more attractive, be a causal factor? People caught up in the turmoil of a positive feedback loop rarely perceive reality beyond it. This simple CLD tries to illustrate the dynamic and feedback loops that could be responsible for this strange apathy and how our present day economic system could be blinding us to imminent danger.

DRAFT conceptual model of climate change connections in Yamuna river project.
DRAFT conceptual model of climate change connections in Yamuna river project.
last month
People, generally, do not seem to be conscious of, or care
about, the enormous dangers of climate change and even the possibility of a
devastating war in the Korean peninsula that could turn nuclear. They carry on
with their routine and banal conversations as if that was all that mattered. In
the 60
People, generally, do not seem to be conscious of, or care about, the enormous dangers of climate change and even the possibility of a devastating war in the Korean peninsula that could turn nuclear. They carry on with their routine and banal conversations as if that was all that mattered. In the 60s there were peace demonstration, there was more awareness and public engagement in the face of the thread of nuclear war. Could the pressures and demands of modern capitalism, now no longer tamed by a competing communist system that could potentially appear to be more attractive, be a causal factor? People caught up in the turmoil of a positive feedback loop rarely perceive reality beyond it. This simple CLD tries to illustrate the dynamic and feedback loops that could be responsible for this strange apathy and how our present day economic system could be blinding us to imminent danger.

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 she
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/

simulation oc carbon dioxide in the atmosphere
simulation oc carbon dioxide in the atmosphere
Various factors affecting South East Queensland's koala population. 
Various factors affecting South East Queensland's koala population. 
 A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth ( primary source ). And a simple model of carbon dioxide sources and sinks in the atmosphere ( primary source ).
A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth (primary source). And a simple model of carbon dioxide sources and sinks in the atmosphere (primary source).

The energy model assumes inflowing short-wave solar radiation that does not interact with the atmosphere. A fraction of this is reflected immediately (e.g. by snow and ice cover). The remaining is absorbed 🌎 and re-radiated as long-wave infrared which can be captured by the atmosphere ☁️. The fraction captured by the atmosphere is related to the level of Carbon Dioxide in the atmosphere.

This model tracks Carbon Dioxide emissions from burning fossil fuels 🏭 and land use changes 🚜 (e.g. deforestation). It also tracks removal of Carbon Dioxide from the atmosphere into a land sink 🌲 (e.g. vegetation) and the an ocean sink 🏖.

🧪 Experiment with different levels of emissions to see their impact on global average temperatures. You can also compare predicted temperatures and Carbon Dioxide levels to historical data.
 A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth ( primary source ). And a simple model of carbon dioxide sources and sinks in the atmosphere ( primary source ).
A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth (primary source). And a simple model of carbon dioxide sources and sinks in the atmosphere (primary source).

The energy model assumes inflowing short-wave solar radiation that does not interact with the atmosphere. A fraction of this is reflected immediately (e.g. by snow and ice cover). The remaining is absorbed 🌎 and re-radiated as long-wave infrared which can be captured by the atmosphere ☁️. The fraction captured by the atmosphere is related to the level of Carbon Dioxide in the atmosphere.

This model tracks Carbon Dioxide emissions from burning fossil fuels 🏭 and land use changes 🚜 (e.g. deforestation). It also tracks removal of Carbon Dioxide from the atmosphere into a land sink 🌲 (e.g. vegetation) and the an ocean sink 🏖.

🧪 Experiment with different levels of emissions to see their impact on global average temperatures. You can also compare predicted temperatures and Carbon Dioxide levels to historical data.
 A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth ( primary source ). And a simple model of carbon dioxide sources and sinks in the atmosphere ( primary source ).
A model of Global Climate Change driven by the impact of Carbon Dioxide on the Greenhouse Effect. This model contains a physical model of energy inflows ☀️ and outflows from the Earth (primary source). And a simple model of carbon dioxide sources and sinks in the atmosphere (primary source).

The energy model assumes inflowing short-wave solar radiation that does not interact with the atmosphere. A fraction of this is reflected immediately (e.g. by snow and ice cover). The remaining is absorbed 🌎 and re-radiated as long-wave infrared which can be captured by the atmosphere ☁️. The fraction captured by the atmosphere is related to the level of Carbon Dioxide in the atmosphere.

This model tracks Carbon Dioxide emissions from burning fossil fuels 🏭 and land use changes 🚜 (e.g. deforestation). It also tracks removal of Carbon Dioxide from the atmosphere into a land sink 🌲 (e.g. vegetation) and the an ocean sink 🏖.

🧪 Experiment with different levels of emissions to see their impact on global average temperatures. You can also compare predicted temperatures and Carbon Dioxide levels to historical data.
9 months ago
 The fact
that we all strive to reduce psychologically inconsistent thoughts  is a well-researched phenomenon. When we hold
two conflicting thoughts in our heads we feel an overwhelming desire to reduce
this conflict. This desire can be a powerful driver in the way we behave. Most
of us are aware at

The fact that we all strive to reduce psychologically inconsistent thoughts  is a well-researched phenomenon. When we hold two conflicting thoughts in our heads we feel an overwhelming desire to reduce this conflict. This desire can be a powerful driver in the way we behave. Most of us are aware at some level that if we took the threat of climate change seriously we would need to completely change our routines and the way we behave. Flying off on holiday would be out of the question. Swimming pools would be a past luxury. Most of us would need to give up our cars and become vegetarians. The list can be extended almost endlessly. Very often, subconsciously, we try to reduce troubling and inconvenient facts by minimizing, ignoring or even by denying them. Could this be why we hardly talk about climate change even in the face of increasingly frequent extreme weather events and obvious signs that it is occurring now?

This subject needs to be openly talked about between us and in the press. The seriousness of global warming makes it a necessity.  Only when this happens will politicians have the space and incentive to act on our behalf. But before this can happen we need to be aware of the reason why we avoid talking about this subject – this graph tries to illustrate the harmful dynamic that could be responsible for it.