Soooooo, how's this weather?

[Psyber]

This site may help with the cycle debate, but it does only go back about 500 million years, and I can't vouch for its sources beyond saying I saw some similar charts on display at the Museum of Natural History, in London, in 2011: http://en.wikipedia.org/wiki/Paleoclimatology

And I do have this chart which is similar:

CO2 and mass extinctions.jpg (35.91 KiB) Viewed 1676 times

[Bully]

its interesting to see that asteriods and volcanos are included into that graph on how the CO2 in the air caused mass extinctions. and also interesting to see that from jaround 300 million years till 200 million years ago, there was a massive rapid CO2 increase (whilst humans didnt exist)

[Ian]

Natural occurances that produce CO2 being included are very relevant. When a volcano erupts it produces massive amounts of CO2, I didn't know about asteroids but that makes sense as well.

[Bully]

didnt an asteriod hit russia a few weeks ago , see the humans can survive everything

[Sky Pilot]

didnt an asteriod hit russia a few weeks ago , see the humans can survive everything

Yeah George W Bush caused that

[fish]

This site may help with the cycle debate, but it does only go back about 500 million years, and I can't vouch for its sources beyond saying I saw some similar charts on display at the Museum of Natural History, in London, in 2011: http://en.wikipedia.org/wiki/Paleoclimatology

And I do have this chart which is similar:

CO2 and mass extinctions.jpg

Thanks for posting that graph compiled by climate scientists - the same group who have concluded that the current warming is primarily caused by human activity rather than natural variability.

[dedja]

Maybe I'm blind but doesn't that graph show that CO2 levels are less today than about 100M years ago? ... and also have been dropping in the 50M odd years?

[fish]

#-o

i give up honestly. Dont wish to be banned for trolling.

We should only look at records of since when humans have been taking records..............rrrrrrriiiiiiiggggghhhhhttttttttttt. So we will just forget about how life began huh?

Bully I'm wondering how much climate science you've studied - as you seem to be under the misconception that climate scientists have not considered past climate in their analysis of the current climate - they have.

The 2007 IPCC Fourth Assessment Report contains a large section on Paleoclimate it might be good to have a look at this sometime.

[dedja]

Science is only 'correct' as per the peer reviewed published evidence based results of the day.

Some of these results and conclusions can (and have) changed over the years.

Some past examples ...

http://blog.chron.com/sciguy/2010/11/th ... -theories/

Just saying ...

[fish]

Maybe I'm blind but doesn't that graph show that CO2 levels are less today than about 100M years ago? ... and also have been dropping in the 50M odd years?

Carbon dioxide levels are certainly not dropping at present - here is the record over the last 400,000 years or so:

[dedja]

Psyber's graph shows the last 550 million years ... my comment was in relation to the last 100 million years, a much larger sample than the last 400,000 years.

Is Psyber's graph incorrect?

[therisingblues]

Maybe I'm blind but doesn't that graph show that CO2 levels are less today than about 100M years ago? ... and also have been dropping in the 50M odd years?

You are correct. The reason that recent CO2 increases aren't apparent could be because on a scale of 50M years, the last 200 years would not take up a millimeter. Basically impossible to represent the trend.
I guess that's why there's a future graphed on there, to show the direction of current trend?

[therisingblues]

No, i dont understand it, hence the reason i keep asking you to show me graphs from both when humans didnt walk the planet like before the dinosaurs,and the weather to show it back then,which you cant and no one can,yet you can only show me graphs and information of when 100% confirmed that scientists have taken correct 100% confirmed records whilst humans have walked the planet..I dont understand it, hence the reason i keep asking for it.........I dont understand the science of it no. I have clearly stated this more then 30 times now.

No you haven't. What you have said is no one can prove it to you. Big difference
I am also not saying you are wrong with what you are telling me, but i want to see the weather 100% i.e. Scientist Long John Silver was there for that period and recorded it back then, to compair it till now. This, odviously can not be done. hence the reason i am saying, we just dont know if the earth is going through a natural phase of warming more than normal, or it is not, and it is humans causing it.
You have already said in this post that you don't understand the science. On those grounds alone you should stop with this "Can't be proven" line of yours.
This is i believe, and so do others, so its not just me including some of the most experienced scienetists have said "it maybe the earth just going through a natuarl warming"
There is no peer reviewed evidence from any scientist that proves this is just a natural phase. There is alot of peer reviewed evidence that proves it's a man made phenomena however
So, do you understand that??

Yep, got it.

[therisingblues]

I think we got modded.

[Bully]

it has?

[Bully]

[Psyber]

This site may help with the cycle debate, but it does only go back about 500 million years, and I can't vouch for its sources beyond saying I saw some similar charts on display at the Museum of Natural History, in London, in 2011: http://en.wikipedia.org/wiki/Paleoclimatology

And I do have this chart which is similar:

CO2 and mass extinctions.jpg

Thanks for posting that graph compiled by climate scientists - the same group who have concluded that the current warming is primarily caused by human activity rather than natural variability.

I don't dispute all their work as you know already. I accept current CO2 levels have exceeded the last peak from about 325 million years ago shown on the Milankovitch Cycle related charts, and that the excess implies a probable human contribution.

However, I do struggle to work out how they get from that to stating that "the current warming is primarily caused by human activity rather than natural variability." in the light of all the other operating factors. (It doesn't help that when that is challenged the short-term post-1890 meteorological data tends to get trotted out again.)

[Bully]

certain station in QLD is doing very well after the recent rains here

i know a certain forum user with the first letter of C will LOVE to hear this

[CENTURION]

BUT...........................are they letting water past??

[Roxy the Rat Girl]

Which catchment is it Bully?