2.4   The semi-linear and non-linear zones

The semi-linear ‘Code Red Zone’ and the non-linear ‘Danger of Death Zone’ of Earth's climate control – a conceptual model

The Earth’s Climate Control system may only behave like an LTI system within a small range of CO2 levels from about 170 ppm to 290 ppm. 

Until about 200 years ago the Average Earth Temperatures had been generally oscillating between about 9.0 degrees Celsius and 15.0 degrees Celsius for over 400,000 years. The Earth’s average temperatures stayed in a “Life Nurturing & Growth Zone”. 

Climate Scientists do not know with absolute certainty what will happen outside of this temperature zone, except they certainly know it will be dangerous for life on Earth.

The world has already warmed about 1.1 degrees Celsius. So right now, the Earth is on average 16.1 degrees Celsius, and it is likely to be in a Semi-Linear “Code Red Zone”.

Climate Scientists generally seem to believe it is likely there is a Non-Linear upward “Tipping Point” above which the Earth’s Climate Control System becomes highly Non-Linear, causing a rapid accelerated increases in the Average Earth Temperature.

From a systems engineering perspective, it cannot be overstated just how bad this situation could be for all life on Earth. This Non-Linear temperature range is the “Danger of Death Zone” where Average Earth Temperature increases accelerate uncontrollably.