Knobby22
Mmmmmm 2nd breakfast
- Joined
- 13 October 2004
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Heat - note that it was "almost" the hottest summer since records began. But then consider the huge amount of heat added by non-greenhouse gas sources. Fuel combustion, nuclear energy, land use change, hydro-electricity and wind energy are all adding plenty of heat directly to the atmosphere regardless of any CO2 they may emit. This alone would cause some warming, with or without the CO2 issue. Heat emission from these sources in the US are very much higher now than they were in 1936 when the use of coal, oil and hydro plus heat effects of land use change was very much lower whilst nuclear energy and electricity from wind power didn't exist at all (old style wind mills pumping water aren't really adding heat so far as I can work out).
Tornados - I'm no expert on them but there was a weather expert on Financial Sense Newshour a few years ago who predicted this based on some natural cycle that is already well understood.
Floods - Land use change since 1927 in the US has been on a massive scale and I don't think anyone would dispute that. Such changes have major impacts on runoff and that is something you can witness even outside your own home (assuming you have asphalt roads or concrete etc). No doubt there have been other changes too - dams, diversions, works along the river banks, water extraction etc which also impact flows. As such, measuring the flow is essentially meaningless unless your purpose relates directly to the flow in the river, water supply, navigation etc. It tells you nothing about the climate or rainfall due to the sheer number of changes upstream in the catchment.
True, tornados come in cycles but they were the worst ever, the flooding is also effected by all the concret culverts but again it was the worst ever, this combined with the worst Texans drought ever in the same year! Pretty amazing.
Warming of the atmosphere would be expected to increase the severity of weather extremes and we have a lot more warming to come.
Channel 7 news said the weirdness and severity of the storms that hit Melbourne on Christmas day were caused due to the red centre hitting a new 47 degree record. Interesting times ahead in my opinion as we have a lot more warming to come over the next 30 years.