Global warming audit - better or worse ?

Global warming - on track for 40C increase and beyond

With the IPCC's latest assessment due out towards the end of this year (and given some of the leaks of the draft report have been manipulated by a climate change sceptic), the question arises of where the world's environment currently sits and forward projections. Looking through the various aspects of the measurement of climate and geoinformation available the trend of serious climate change appears to be unstoppable with the reality that current generations will also experience the effects, first-hand. 

  
Loss of sea ice in the polar regions: sea ice has fallen to its lowest levels for at least 1400 years which means heat reflecting white ice has been replaced by heat absorbing black ice. The effect of this change is more extreme weather events in the Northern Hemisphere, melting of the higher level permafrost and hence the  release of more carbon into the atmosphere and faster melting of the Greenland ice sheet which affects ocean levels.

Extreme weather increases: Russia experienced extraordinary hot temperatures above 400C in 2010, North America (Canada and the US) had the converse with record snow  and rainfall  and superstorm 'Sandy' demonstrated the impact of more extreme weather events. 2012 and early 2013 have followed similar weather trends The warming in the Arctic is believed now to have caused the polar jet stream to have slowed thus reducing the movement of patterns of weather. In this sense storms can  become locked in place.

Falling food production: Global production of staple food stocks such as wheat, maize, rice and soybeans between 1980 to 2008 which were expected to increase, in fact have fallen 1%. Extreme rainfall and extreme heat are considered the likely culprits.

Rising sea levels faster than expected: the Greenland and Antarctic ice sheets have been losing enough ice each year to raise sea levels by 1.3 millimetres per annum which is increasing each year. The expected sea rise is projected at 2 metres which would render many major coastal urban cities vulnerable to flooding and storm surges.

Greenhouse gas levels continue to rise: half of the  CO2 which is emitted is absorbed by land and oceans but with global warming, the capacity for this absorption is reduced and conversely the risk increases of CO2 releases from both may occur instead. The various climate change models which have been used for forecasting did not include the permafrost melting or methane hydrate's being released from the ocean.   

The reality which now underpins all projections of increases in global temperature is that carbon emissions have actually been rising not reducing so the planet is well on course to be between 50C and 60C hotter by 2100 and will reach 40C many years before that.  As yet however the necessary levels of mandatory steps have not been taken as the imperative for immediate action on a greater scale has not been accepted or is being denied. Surely there are few species on the planet that could do more to render their own home uninhabitable.