Post by Firu Post by John Bowes Post by Rich80105
for one area that knows what extreme weather events can do.
Now provide positive proof climate change isn't natural Rich? If we're causing it what caused the iceblock that was once earth to melt? Dinosaurs???
Glaciation happens about every 100,000 years. This can be seen in ice
core samples taken from glaciers. Colder weather means more snow and ice
per year. The cores show this as layers, bit like tree rings.
Another neat thing about ice cores is the gases they trap as the snow
falls. The gas can be analysed. The gases show rising carbon dioxide
corresponding with less snow, it's getting warmer, and lower carbon
dioxide corresponding with more snow, it's getting colder. The amount of
dust particles in the samples follows a similar pattern, more dust,
warmer, less dust colder.
What caused this? Volcanos? Bush fires? too many cook outs? Who knows,
we weren't there. But we know something happened. And this looks to be
Right now on the 100,000 year cycle we (the planet) should be tipping
into a cooling phase. But the carbon dioxide and the dust levels are
rising and the downward trend hasn't happened. This isn't natural.
Thanks, that is a very good presentation. There are of course
fluctuations in the observed results; we are aware of some events that
are likely to have affected climate previously, such as major
eruptions such as the events that led to the formation of Lake Taupo,
or possibly Vesuvius; of an object that landed from space in Russia
forming a large crater, of earthquakes arising from moving tectonic
plates etc. etc. Some of those "natural" events continue, but we now
know that mankind has also had an effect. Deforestation through
burning and harvesting, mining and burning for heating and industry
are often referred to as not being "natural", but the reaction of
nature to such actions of mankind are "natural" - and the "natural
cycle" is be changing as a "natural" effect of the overall actions of
In New Zealand we have been slow to react to these issues. We have not
stopped exploration for oil and gas - although some permit holders
have decided themselves to cease; the decision to not issue new
permits was more a market reaction; bids for additional permits had
fallen in value to the point that the government may not have covered
the risks of a permit holder walking away from polllution and the
results of an accident. We now have a government that is not shackled
by a minor partner, and we will hopefully see action consistent with
the governments stated intentions; and it becoming clear that there
are economic and social benefits from taking those actions in terms of
short term trade and our quality of life. These are natural responses
from a responsible government; but they will not be sufficient to
avoid some of the "natural" effects that will continue to result from
past human actions.