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THE United Nations climate science panel faces new controversy for wrongly linking global warming to an increase in the number and severity of natural disasters such as hurricanes and floods.
It based the claims on an unpublished report that had not been subjected to routine scientific scrutiny — and ignored warnings from scientific advisers that the evidence supporting the link too weak. The report's own authors later withdrew the claim because they felt the evidence was not strong enough.
We find insufficient evidence to claim a statistical relationship between global temperature increase and catastrophe losses.
Up to 40%of the Amazonian forests could react drastically to even a slight reduction in precipitation.
Up to 40% of the Brazilian forest is extremely sensitive to small reductions in the amount of rainfall. In the 1998 dry season, some 270,000 sq. km of forest became vulnerable to fire, due to completely depleted plant-available water stored in the upper five metres of soil. A further 360,000 sq. km of forest had only 250 mm of plant-available soil water left.
Originally posted by MightyAl
The problem is that the title of the article "Large-scale Impoverishment of Amazonian Forests by Logging and Fire" would show that it has absolutely NOTHING to do with climate change!!
The IPCC just conveniently used it to fit in with their report, even though that claim was only related to those forests damaged by logging and fire...
Large-scale burning of tropical forest during severe ENSO episodes may impoverish vast areas of these species- and carbon-rich ecosystems; such episodes are increasing in frequency, possibly in response to the accumulation of greenhouse gases in the atmosphere
Originally posted by melatonin
The Nepstad study does actually mention what you apparently consider to the only source of AGW - greenhouse gases. It's just not in the title.
Large-scale burning of tropical forest during severe ENSO episodes may impoverish vast areas of these species- and carbon-rich ecosystems; such episodes are increasing in frequency, possibly in response to the accumulation of greenhouse gases in the atmosphere
Nepstad et al. 1999
The biggest issue here, again, is that some crap authors in the crap secondary WGII are relying on grey literature as the primary source.
[edit on 27-1-2010 by melatonin]
Originally posted by MightyAl
Our Earth goes through natural climate change cycles. In 1999, when the above article was written, our planet was going through a warming cycle with severe ENSO episodes. This does not prove that it will continue to occur so in the future from the publication date on, and it especially does not prove that it is caused by humans.
Deforestation is caused by humans of course, and clearly as a result CO2 is emitted into the air. However this will not affect global warming on any significant scale (reportedly 5-10%...sorry, can't find the source right now). The greatest amount of CO2 in the world emitted comes from volcanoes. How can we stop the volcanoes from belching CO2 into the air?
The following image shows how we are going through cycles of warming and cooling:
Originally posted by MightyAl
Up to 40%of the Amazonian forests could react drastically to even a slight reduction in precipitation.
The problem is that the title of the article "Large-scale Impoverishment of Amazonian Forests by Logging and Fire" would show that it has absolutely NOTHING to do with climate change!!
Originally posted by mirageofdeceit
The IPCC are supposed to be a scientific body, using peer reviewed data in its authoritive reports, but it seems they're slacking, and giving science a bad name.
We even had the CRU falsifying data because it couldn't prove global warming in REAL data!!!!!!!
I still find people vehemently defending the IPCC and resorting to ad hom attacks despite the fact it is clear the IPCC is now dead and buried as a serious scientific organization.
Originally posted by mirageofdeceit
reply to post by Essan
I still find people vehemently defending the IPCC and resorting to ad hom attacks despite the fact it is clear the IPCC is now dead and buried as a serious scientific organization.
Land use changes are a part of climate change.
The Nepstad study does actually mention what you apparently consider to the only source of AGW - greenhouse gases …
Large-scale burning of tropical forest during severe ENSO episodes may impoverish vast areas of these species- and carbon-rich ecosystems; such episodes are increasing in frequency, possibly in response to the accumulation of greenhouse gases in the atmosphere
So we essentially have … some crap authors in the crap secondary WGII are relying on grey literature as the primary source.
They should be using the peer-reviewed literature whenever possible. However, it is well-known that the issues for WGII are often poorly studied and understood.
[b ...no rule that says they must use peer-reviewed scientific studies.
I do often wonder what you people think the IPCC actually is...
The funniest thing is one big problem with the IPCC science-by-committee is its overly conservative nature.
I think we should all push for the IPCC to sort a new AR5 report out.
They can fix the typo issue for himalayan glaciers and get the primary peer-reviewed sources in place for WGII, and, obviously, update the rest of the science
Originally posted by melatonin
Aaaaand that's enough for me...
Volcanoes do not produce more CO2 than humans. Humans are emitting twice the amount of CO2 required to account for yearly atmospheric increases.