Climate change...

Anything!

Do you believe Climate Change/Global Warming is a result of modern society

Strongly believe
21
24%
Believe
14
16%
50/50 , not yet sure
12
13%
dont believe
25
28%
Strongly dont believe
17
19%
 
Total votes : 89

Re: Climate change...

Postby fish » Sat Feb 19, 2011 9:20 pm

auto wrote:Gday fish, im currently doing a science degree and can either go geoscience or environmental options, but not sure which way to jump yet and im interested to know what someone in the environmental field does on a daily basis.
My best advice auto would be to go into the field that interests you the most. I did my postgraduate course over 15 years ago so I'm not really up to speed about the available courses and employment options in each area.

If you're looking for security of employment I'd go for the water or agriculture fields - these will become crucial as climate change really bites and expertise in these areas will be highly valuable.
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Re: Climate change...

Postby fish » Mon May 23, 2011 9:43 pm

The Climate Commision has just released a major report on climate change, which brings together the latest science on climate change.

I've just started reading it and it's pretty grim.

The evidence that the Earth ’s surface is warming rapidly is now exceptionally strong, and beyond doubt. Evidence for changes in other aspects of the climate system is also strengthening. The primary cause of the observed warming and associated changes since the mid-20th century – human emissions of greenhouse gases – is also known with a high level of confidence.
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Re: Climate change...

Postby Dancing in the rain » Tue May 24, 2011 12:17 am

funny how this report gets released just when labour are trying to push through an unpopular carbon tax.
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Re: Climate change...

Postby fish » Wed May 25, 2011 8:24 pm

Dancing in the rain wrote:funny how this report gets released just when labour are trying to push through an unpopular carbon tax.
It makes sense to me that the Parliament and the public have this info now rather than after the vote on the carbon tax.
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Re: Climate change...

Postby White Line Fever » Wed May 25, 2011 9:36 pm

Listening to 5AA last night, Bob Francis...

He was reading out a report on how the ice caps are melting, significant glaciers are gone, seals no longer in places, coastal towns in big trouble etc etc then he goes.. and this report was written in 1920!!

Pretty amusing
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Re: Climate change...

Postby fish » Wed May 25, 2011 10:43 pm

White Line Fever wrote:Listening to 5AA last night, Bob Francis...

He was reading out a report on how the ice caps are melting, significant glaciers are gone, seals no longer in places, coastal towns in big trouble etc etc then he goes.. and this report was written in 1920!!

Pretty amusing
LOL funny if it's true. Also amazing foresight!
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Re: Climate change...

Postby gossipgirl » Thu May 26, 2011 2:13 pm

seemingly the world is flat :shock:
Adelaide Crows World champions 2017 - Crows 4.11 to Lions 4.5
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Re: Climate change...

Postby mighty_tiger_79 » Thu May 26, 2011 4:24 pm

Matty Wade is a star and deserves more respect from the forum family!
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Re: Climate change...

Postby fish » Thu May 26, 2011 6:53 pm

mighty_tiger_79 wrote:http://theflatearthsociety.org/cms/
Amazing that people still believe the earth is flat despite the overwhelming evidence to the contrary! :shock:

A bit like the holocaust and climate-change deniers I suppose...
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Re: Climate change...

Postby Barto » Thu May 26, 2011 10:49 pm

Or people who believe a rubber band will give them greater sporting ability.
It's all the SANFL's fault.
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Re: Climate change...

Postby mick » Fri May 27, 2011 8:15 am

I believe climate change is happening at a relatively rapid rate. What I am unsure of is whether human activity caused or is causing it. I don't believe any measures humans take(ETS, carbon taxes) will have any effect on the process, adaptation is the key to surviving climate change.
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Re: Climate change...

Postby Dog_ger » Fri May 27, 2011 8:25 am

http://www.thehindu.com/news/internatio ... 048139.ece

Someone, politically minded, will put a tax on this somehow.... :shock:

Just wait... ;) :D

And some of the public will agree with the tax... #-o 8-}
Smile :)

It's only Money $$$ :)

What is happening to our SANFL guys...
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Re: Climate change...

Postby fish » Fri May 27, 2011 12:51 pm

mick wrote:I believe climate change is happening at a relatively rapid rate. What I am unsure of is whether human activity caused or is causing it. I don't believe any measures humans take(ETS, carbon taxes) will have any effect on the process, adaptation is the key to surviving climate change.
I reckon that view reflects that of many people mick.

Unfortunately what the science tells us is that "business as usual" with no attempt to reduce carbon emissions will only see the climate change more and more, with potentially disastrous results.

Human emissions of carbon dioxide have increased the level of carbon dioxide in the air from about 280ppm (parts per million) prior to the industrial era to about 390ppm at present - an increase of about 40%. Scientists tell us that the global temperature rise of about 0.8 degrees Celcius since industrialisation is primarily due to the increase in carbon dioxide (and other greenhouse gases methane and nitrous oxide) in the air.

If the greenhouse gas levels in the air continue to increase then so will the temperature and that will bring increasingly negative consequences such as droughts, extreme weather events, sea-level rise etc. There is also the prospect of "runaway" climate change if the vast stores of methane frozen in the tundra are released upon melting.

This is why the policy focus around the world is on emission reductions in order to stabilise greenhouse gas levels in the air - if that can be achieved we can avoid the worst effects of climate change...
Last edited by fish on Fri May 27, 2011 1:20 pm, edited 1 time in total.
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Re: Climate change...

Postby fish » Fri May 27, 2011 1:11 pm

Dog_ger wrote:http://www.thehindu.com/news/international/article2048139.ece
Somewhat ironically Dog_ger, volcanoes tend to have a positive impact on climate change, even though they release some carbon dioxide into the atmosphere when active. Fortunately these carbon dioxide releases are relatively small - human emissions of carbon dioxide are about 100 times higher than those of volcanoes.

Volcanoes also release dust and ash particles which have a "shading" impact on the planet - for smaller volcanoes this is probably a very small effect, but large eruptions such as Mount St. Helens in 1980 and Mt. Pinatubo in 1991 had a measurable short term effect of cooling the planet.

Also, if the volcanic dust temporarily grounds the airline industry, particularly in the Northern Hemisphere, there is a reduction in greenhouse gas emissions from the aircraft.
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Re: Climate change...

Postby fish » Sun May 29, 2011 11:43 pm

fish wrote:
White Line Fever wrote:Listening to 5AA last night, Bob Francis...

He was reading out a report on how the ice caps are melting, significant glaciers are gone, seals no longer in places, coastal towns in big trouble etc etc then he goes.. and this report was written in 1920!!

Pretty amusing
LOL funny if it's true.
WLF it appears that the report is bona-fide and I have managed to find it on one of the climate-deniers websites. To read it click here. The article starts about half way down the page and is titled "The Changing Arctic". The article is not a scientific report but a record of the observations from a Norwegian coal finding expedition in the Arctic in August 1922. It is pretty interesting and details significant losses of ice and stocks of fish and seals.

There is no mention of "coastal towns in trouble" though - are you sure that was mentioned WLF?

Anyway, it got me thinking so I had a look back at the historical temperature record and found that, sure enough, temperatures in the 1920's had been increasing steadily since about 1915 or so. This explains the observations of the 1922 Norwegian expedition. The fact that global temperature variations are more pronounced at the poles than at the equators means that the Arctic probably had experienced more warming than the temperature record suggests. The graph shows that the global temperature has continued to rise to the present.

I also had a look back at the historical carbon dioxide levels and found that in the 1920's the levels had already started increasing from the pre-industrial era. From the graph it looks like the carbon dioxide concentration was about 305ppm in the 1920’s compared to 280ppm prior to industrialisation – a rise of 9%.

What I’m thinking is that the Norwegian expedition had observed some of the first manifestations of human-induced climate change!

Interesting stuff I reckon – thanks Bob Francis!
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Re: Climate change...

Postby Psyber » Mon May 30, 2011 9:26 pm

I still have not been able to find an answer to my question about how directly comparable CO2 levels from recent dry flask air samples from Vostok are with levels from older ice core encased air bubbles, but I was interested in one display in the Natural History Museum in London yesterday.

It was a graph displaying average ocean levels and average planetary temperatures over millions of years in various epochs.
It demonstrated that currently both are lower than usual for the planet..
EPIGENETICS - Lamarck was right!
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Re: Climate change...

Postby White Line Fever » Tue May 31, 2011 10:17 am

Coldest May in ten years

Get ready for the ice age tax
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Re: Climate change...

Postby fish » Tue May 31, 2011 8:40 pm

White Line Fever wrote:Coldest May in ten years

Get ready for the ice age tax
WLF it is important to distinguish between short term localised weather and long term global climate change - a cold autumn in Adelaide is just a cold autumn in Adelaide. It is not necessarily colder elsewhere in the world. As the following graph shows, the year-to-year global temperature (the blue line) jumps around from year to year but the long term average (the red line) is creeping upwards.
300px-Instrumental_Temperature_Record_(NASA)_svg.png
300px-Instrumental_Temperature_Record_(NASA)_svg.png (17.78 KiB) Viewed 709 times
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Re: Climate change...

Postby Banker » Tue May 31, 2011 9:26 pm

Im sick of the debate on the science. The debate should be why a tax is the best solution to reduce our emissions without sending our economy down the toilet.
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Re: Climate change...

Postby fish » Tue May 31, 2011 10:48 pm

Banker wrote:Im sick of the debate on the science. The debate should be why a tax is the best solution to reduce our emissions without sending our economy down the toilet.
I couldn't agree more Banker!
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