The Global Calculator puts you in control
of the world’s energy, land and food systems to 2050
and allows you to explore different scenarios for reducing emissions and avoiding dangerous
climate change. This video will give you a quick overview
of how to use it. When you first open the Global Calculator,
it automatically shows you the International Energy Agency’s “business as usual”
future pathway to 2050. This shows you what the world would be like
if no further action is taken to tackle climate change.
As you can see, greenhouse gas emissions are growing and the world could warm by 6°C.
How would you put the world on track to meet the international commitment to a 2°C target?
Here are three tips for creating a pathway. Firstly: set the levers.
There are around 40 levers which drive global emissions, across the whole of the energy,
land and food system. Each lever has four levels, representing progressively
more effort to reduce emissions. This represents experts’ views of the full
range of what could be achieved. But be wary of selecting level 4: this is
an extraordinarily ambitious level of effort, which would be very difficult to achieve.
Detailed information on each lever is available. You can either set each lever one at a time,
or you can choose one of the example pathways, many of which were built by businesses and
NGOs. The second tip for creating a pathway is to
check the cumulative emissions. Cumulative emissions between now and 2100
will determine global mean temperature change. If you want to have a 50% chance of limiting
temperature increase to 2C, you need to keep cumulative emissions below the orange line.
The third tip is to check the warnings. These turn red to inform you of any potential
problems with your pathway. The Global Calculator has many other graphics
you can explore. For example, the lifestyle tab shows you how
much people are eating, heating or cooling their homes and travelling within your pathway.
Clicking on the “lifestyle” levers will change these outcomes.
The technology and fuel tab shows the efficiency of technologies, the roll out of low carbon
technologies, and the fuel mix. For example, you can see how electricity is
supplied. Clicking on the “technology and fuel”
levers will change these graphics. The land and food tab shows how land is used.
Clicking on the “land and food” levers will change these results.
You can also view the impact of your pathway on the climate.
You can even view the cost implications of your pathway.
Finally, you can also view how your pathway compares to others.
Once you’re happy with your pathway, if you want to share it with others, just click
on “share” and copy/paste the unique URL. The Global Calculator – informing the climate
debate.

How to use the Global Calculator
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