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Monday, June 10, 2019

#Global Warming Driving Sixth Mass #Extinction


" to resist change and, in the interests of maximising profit, continue to move far too slowly to avert increasingly dangerous outcomes.  Young people rightly protest against this and those responsible for killing flora and fauna (which includes humans), destroying their habitat and giving impetus to the 6thmass extinction now in progress."





Effects of Global Warming

Why are young – and not so young – people becoming more vociferous in their protests about global warming?  Why has climate change become a political and partisan issue at democratic elections?  Why do ‘greenies’ try to stop the development of new coal mines and call for speedier reduction of our greenhouse gas emissions?  The answer is that the effects of greenhouse gas emissions, particularly Carbon Dioxide (CO2), are becoming increasingly evident and dangerous – although relatively mild at present, compared to what they could soon become.
Much is being said about the cost of reducing greenhouse gas emissions in terms of lost jobs, lost income and harm to national and global economies but we hear relatively little about the catastrophic consequences of not reducing emissions.  Prioritising short term profit and ideology ahead of emissions reduction will inevitably result in an uncontrollable, unpredictable and destructive climate resulting in socio-economic collapse.
Image result for global warming projections 2070

Analysis of air trapped in ice cores shows that over the past 800,000 years the normal concentration of CO2 in the atmosphere varies between 170 parts per million (ppm) during cold periods (so called Ice Ages) to 260-300 ppm when the planet reaches its warmest.  Concentration of COin the atmosphere now stands at over 415 ppm and is continuing to rise at an accelerating rate as we burn ever increasing amounts of fossil fuels.
For well over a century it has been widely known that COabsorbs infra-red light reflected from the earths’ surface then re-emits it, much of it back to the surface.  The higher the concentration of COin the atmosphere, the warmer the surface temperature gets, a phenomenon known as global warming which has a number of effects including 1. ocean warming, 2. loss of land-based ice and permafrost, 3. climate change which becomes less predictable and 4. sea level rise.  Below is an outline of these effects.


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