Guest Jake.f Posted March 30, 2011 Posted March 30, 2011 Sorry for two rather pointless posts of links in one night, but I thought I might share this: http://www.abc.net.au/science/articles/2011/03/30/3177693.htm Interesting idea... Global* If someone could edit...
Exadios Posted March 31, 2011 Posted March 31, 2011 Sorry for two rather pointless posts of links in one night, but I thought I might share this:http://www.abc.net.au/science/articles/2011/03/30/3177693.htm Interesting idea... Global* If someone could edit... Actually, the article starts with the statement, "A new study has found clouds left behind by aeroplanes [sic] are causing more global warming than the carbon dioxide they release." That is, both the the contrail and the CO_2 are airplane emissions. In fact, when you read further on, you will discover the aircraft emissions cause over twice the short term global warming (28mW/M^2 + 31mW/M^2) when considering both the emissions. However, the water comes out of suspension relatively quickly and the long term global warming is a result of the CO_2 emissions.
fly_tornado Posted March 31, 2011 Posted March 31, 2011 google global dimming. this was around a couple of years after 9/11 shutdown air traffic into the US. interesting ideas contained within
Guest davidh10 Posted March 31, 2011 Posted March 31, 2011 While councils have banned incinerators and the Federal Government is going to tax our carbon emissions, government agencies and farmers continue to burn large swathes of bush and paddock stubble. Since the Victorian Bushfire Royal Commission, the DSE (Department of Sparks and Embers) has promised to triple its undergrowth burns. While I recognise the need, the two policies seem to be at odds. I'm sure there is a better way of using paddock stubble, than turning it to ash, smoke and CO2. On Monday evening at 5,000', the visibility, locally, was down to two miles in places (no, not just over a fire, but much more generally, partly due to a temperature inversion). Vis at lower altitudes was better, but the quantity of smoke every fine day since the start of Autumn is both unpleasant and makes you think.
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