What scientific literature is there that supports anthropogenic global warming?
A recent statement by one of our fellow regulars caught my eye:
"You keep going on about scientific literature.... THERE IS NONE!!!!!
It is all theories and studies linked to theories and studies linked to studies
Let me repeat "THERE IS NO SCIENTIFIC LITERATURE!!!!!" "
http://answers.yahoo.com/question/index;_ylt=AjQoD0cKM7WxkBgQ3sSowlv_5nNG;_ylv=3?qid=20110119112651AAYDdXt
How true is this? What are some examples of papers published in respected scientific journals that support anthropogenic global warming? That refute other mechanisms for the warming? Ideally, papers that elaborate on observation and evidence, aside from models, would be preferred, as such was implied in the question before. Is "THERE IS NONE!!!!!" a statement well-established in reality, or is it completely farcical? If it is false, why is it being perpetuated?
Please, try to refrain from opinion only - examples of scientific literature are what I'm foremost looking for. Unless, of course, you accept the above statement, in which case I won't ask you to prove a negative.
c: thanks - is there a specific link to the full list of sources that the IPCC used?
Well jim, if I asked for papers that proved AGW, I would be quite dismayed if I got any because that's not how science works. "Support" is general and specific enough for the intent of my question, which was to address the statement that there is no scientific literature [supporting the theory (as I understood it to mean)]. I did not ask for evidence for climate sensitivity or any other specific item, because that's too focused; and I didn't ask for papers like Chapman et al 1996 (random choice off of the IPCC list given in some other answers) that did not even address how we think global warming is caused. Why? Because I AM careful in what words I choose and understand the extent and scope of "support." I do not want a full analysis to know what is important, I want the thousands of jigsaw pieces; it is, for example, the IPCC's job to help form the picture.
Ottawa Mike: I agree with most of what you're saying: there has been literature published that either goes against accepted
(grr, I was well under the letter limit)
Ottawa Mike: I agree with most of what you're saying: there has been literature published that either goes against accepted conclusions about effects of climate change/global warming. I disagree with Baccheus (hi Baccheus) that there is no literature and no climate scientists that go against the theory. Also, even though I didn't ask for it, thanks (you too Richie) for the link to the 850+ papers. I've started skimming through to look at the titles and google up a couple names to test to see if they really support skepticism of AGW - Oreskes 2008 was listed, which I think rather humorous, and a couple don't really seem to deal with AGW at all: Davis et al 2003 and Rondanelli et al 2009 for example. A lot from Energy and Environment, too.
(An aside: the title of the article is "850 Peer-Reviewed Papers Supporting Skepticism of "Man-Made" Global Warming (AGW) Alarm." Hm, supporting?)
Mickey: this question was with an agenda, if you will: it was not my intent to gather sources for both sides. I'm not basing many conclusions off of the results of this question besides what the statement above I wanted to address.
De facto anyways, I'm getting sources for both sides :)
amancalledchuda: Whether or not models qualify as evidence is unfortunately (for your argument) something that I specifically asked be left out of the equation altogether for the intents here. Several sources have already been given here to literature that gives observed evidence of an enhanced greenhouse effect and/or a human-induced greenhouse effect (or links to studies). If you're going to rant about there being no evidence while at the same time ranting on about how Baccheus for example turned the scientific process on its head, you may want to rethink your own understanding of the process of debating. The evidence was given. Saying it wasn't, or that it doesn't exist, is not a sufficient, nor even logical, nor even intellectually acceptable, rebuttal. At all.
amancalledchuda: Arguing that an enhanced greenhouse effect will not cause warming because it is being masked by cooling effects is a stance that requires evidence. Several studies have already concluded there will be positive feedbacks:
atmospheric water vapor content:
http://atoc.colorado.edu/~dcn/ATOC6020/papers/Soden_etal_727.pdf
http://www.pnas.org/content/104/39/15248.full.pdf
melting permafrost:
http://www.nature.com/nature/journal/v443/n7107/abs/nature05040.html
sea ice melting, decreasing ocean albedo:
http://www.cosis.net/abstracts/EGU2007/01362/EGU2007-J-01362.pdf
http://nsidc.org/sotc/sea_ice.html
diminishing capability of ocean to absorb CO2:
http://www.sciencemag.org/content/316/5832/1735.abstract
http://www.agu.org/pubs/crossref/2007/2006JC003941.shtml
Climate sensitivity in general: the warming due to a doubling of CO2 is about 3˚C, which is mainly due to positive feedback mechanisms:
http://www.skepticalscience.com/climate-sensitivity-advanced.htm
(Too many links for
*(Too many links for that topic to list all here)
(I'll continue in another details)
Continued:
Evidence for greenhouse effect causing warming:
- CO2 up 40% from pre-industrial levels
http://www.esrl.noaa.gov/gmd/ccgg/trends/global.html
http://maps.grida.no/go/graphic/historical-trends-in-carbon-dioxide-concentrations-and-temperature-on-a-geological-and-recent-time-scale
- More warming during the nights than days
http://www.met.sjsu.edu/~wittaya/journals/diurnalTempRange.pdf
- Decreasing outgoing long wave radiation in the wavelengths CO2 best absorbs at
http://www.eumetsat.int/Home/Main/Publications/Conference_and_Workshop_Proceedings/groups/cps/documents/document/pdf_conf_p50_s9_01_harries_v.pdf
- Increase in downward long wave radiation in those same wavelengths
http://ams.confex.com/ams/Annual2006/techprogram/paper_100737.htm
- Upper atmosphere cooling while lower atmosphere is warming
http://www.ufa.cas.cz/html/climaero/topics/global_change_science.pdf
Evidence of man's involvement:
- Isotopic analysis: 13C ratio falling
http://www.bgc.mpg.de/service/iso_gas_lab/publications/PG_WB_IJMS.pdf
- Accounting for human emissions
- Oceanic acidification - net uptake, not release, of CO2
http://www.antarctica.gov.au/about-antarctica/fact-files/climate-change/ocean-acidification-and-the-southern-ocean
- Volcanoes emit >100 times less CO2 than we do
http://volcanoes.usgs.gov/hazards/gas/climate.php
- Decrease in atmospheric oxygen content
http://adsabs.harvard.edu/full/2006TellB..58...95M
An enhanced greenhouse effect will lead to warming. There is no large negative feedback mechanism that would be able to stop warming past the "danger threshold" of ~2˚C, unless you'd like to provide some sources for such a feedback.
>>>Well, how about the complete lack of the tropospheric ‘hotspot’ - which is the predicted ‘fingerprint’ of greenhouse gas warming?
It's not. The hot spot is a predicted result of the decrease in the adiabatic lapse rate over the tropics due to warming. There is no need to have warming due to an enhanced greenhouse effect, as what causes the hot spot is not CO2. Short time scales reveal there is a hot spot:
http://www.cgd.ucar.edu/cas/Trenberth/trenberth.papers/JClimTvertStruct.pdf
http://pubs.giss.nasa.gov/docs/2005/2005_Santer_etal.pdf
though there is still uncertainty over long time scales. The evidence however does not say that there is no hot spot.
>>>I never asked for them and I am at a loss to explain why you felt the need provide them.
My bad - I had included them as a precaution in the case that you did not accept that the greenhouse effect is becoming enhanced. Since you do accept this, my links are thus, as you say, irrelevant.
>>But that is beside the point. We’re back to the Null Hypothesis again
Yes, we are. I'll reiterate: if you assert that there are going to be negative feedbacks that will stop any significant amount of warming, then you need to provide evidence for such feedbacks. I have provided links to studies that confirm that there will be positive feedbacks - which means warming. Enhanced greenhouse effect = warming, then. The null hypothesis is not anymore that there will not be warming due to an enhanced greenhouse effect, it is that there will not be negative feedbacks to mask warming.
>>>Yes, but this figure is derived from same computer models mentioned above, of course, and are, therefore, not empirical evidence.
Not true. There are climate models used in some circumstances to calculate climate sensitivity, but empirical data in others:
http://homepages.see.leeds.ac.uk/%7Eearpmf/papers/ForsterandGregory2006.pdf
http://www.amath.washington.edu/research/articles/Tung/journals/solar-jgr.pdf
http://www.gfdl.noaa.gov/bibliography/related_files/jmgregory0201.pdf
(oh, guess what? These were in the link I gave you before)
I also reject your adamant attitude toward rejecting all models for the simple reason that they're models, but I digress and will appease you.
>>>Your “Evidence for greenhouse effect causing warming:” is actually only evidence for the greenhouse effect itself, with the exception of “- More warming during the nights than days” which, as pointed out in the very first paragraph, relies on computer models as well.
Again, not true (though I digress on the warming more during nights part). The links I gave show not static realities but dynamic change - *increasing* downward long wave radiation in CO2's bands; *decreasing* outgoing long wave radiation in those bands; 40% higher CO2 than normal cyclical levels as seen for the past several hundreds of thousands of years and *increasing* still; *cooling* upper atmosphere. Perhaps though I miss your point, in which case I think that leads us back to *you* supporting your assertion that there will be negative feedbacks.