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An Interactive History of Climate Science

Posted on 31 May 2011 by John Cook

For years, I've been casually accumulating a database of peer-reviewed climate papers. A few months ago, some Skeptical Science contributors began brainstorming creative ways to visualise this database - a kind of visual sequel to Naomi Oreskes' famous Science paper on consensus. Paul D decided to take it a step further and began programming a Javascript visualisation that very cleverly packs an incredible amount of information into a single, user-friendly graphic. The visualisation displays the number of climate papers published each year, sorted into skeptic/neutral/pro-AGW categories (more on these categorisations shortly). What really blew me away is the slider at the bottom - drag it from left to right to observe the evolution of climate science research from Joseph Fourier in 1824 to the flood of research in 2011.

How the Interactive History of Climate Science works

The Interactive History of Climate Science displays the number of climate papers published in each year from 1824 to 2011. Each year is represented by a circle with the size of the circle determined by the number of papers. By moving the slider, you change the "current year" - more years are shown as you slide from left to right. The visualisation begins with the slider parked in 1824 when Joseph Fourier first published General remarks on the temperature of the terrestrial globe and the planetary space.

Mouseover any circle and a small box displays the year and number of papers published in that year. Here's the cool part - click on any circle and all the papers published that year are displayed beneath the visualisation with a link to the paper. In one succinct visualisation, Paul D has managed to cram in an incredible amount of information, with links to thousands of climate papers. It captures the ethos of Skeptical Science - multiple layers of information with both a user-friendly version for the layperson and a more detailed layer allowing deeper exploration.

How the papers are categorised

We took a different approach to Naomi Oreskes' Science paper who sorted her papers into "explicit endorsement of the consensus position", "rejection of the consensus position" and everything else (neutral). In the case of Skeptical Science, the backbone of our site is our list of climate myths. Whenever a climate link is added to our database, it is matched to any relevant climate myths. Therefore, each link is assigned "skeptic", "neutral" or "proAGW" whether it confirms or refutes the climate myth.

This means a skeptic paper doesn't necessarily "reject the consensus position" that humans are causing global warming. It may address a more narrow issue like ocean acidification or the carbon cycle. For example, say a paper is published examining the impacts of ocean acidification on coral reefs. If the paper finds evidence that ocean acidification is serious, the paper is categorised as pro-AGW and added to the list of papers addressing the "ocean acidification isn't serious" myth.

There are a large number of neutral papers. Neutral does not mean to say each paper was unable to resolve the climate myth. Sometimes, a paper is relevant to a number of climate myths and the results are mixed as to whether it endorses or rejects all the myths. In many cases, the paper doesn't directly set out to directly resolve the myth or the paper has a regional emphasis rather than global. Some papers are about method development more than obtaining a final result. Papers that met any of these criteria are often categorised as neutral.

So yes, categorisation can get a little complicated and there'll be a blog post shortly discussing these issues in more detail. I'm starting to think Naomi's approach was the better way to go!

How we built the database of peer-reviewed papers

The database of peer-reviewed papers is a crowd sourced effort. Special credit must go to Ari Jokimäki and Rob Painting who both submitted thousands of papers to the database (the horse race between the two was fascinating to watch). Ari runs AGW Observer, a blog that keeps track of peer-reviewed climate papers, so he had a huge collection at his fingertips. I also highly recommend his Twitter account which announces new climate papers on a daily basis and there's been a continuous flow of papers in the Skeptical Science Daily Climate Links email.

How you can join the crowd sourcing effort

You can help by joining the crowd sourcing effort. To add peer-reviewed papers, you can use our web based form or the Skeptical Science Firefox Add-on. I'd suggest using the Firefox Add-on - if you can get into the habit of adding any climate links as you browse around, you'll make this data collecting geek very happy! Check out how you're doing by comparing how many papers everyone has submitted (I'll probably revamp this page, add some more features and extra layers of information).

We consider this visualisation a first step, not a final destination. While we have over 4000 papers in the database, that is just the tip of the iceberg with many more papers yet to be added. As well as build the number of papers, we'd like to experiment with different ways of displaying the papers. In addition to the visualisation, you can also view all the papers grouped by skeptic/neutral/proAGW and grouped by which climate myths they address. But I'm sure there are other creative ways this data could be displayed (eg - by using the categories each paper falls under, it should be possible to determine which papers fall under Naomi Oreskes' "reject/endorse the consensus" categorisation). I'm sure there will be much discussion on the issue of categorisation and how it can be more robust and clearly defined.

If you have any ideas on how this information could be organised and displayed, post a comment here and we'll discuss it further (Paul D's visualisation could have gone in many different directions). As with any social media phenomenon, anything is possible when a community starts brainstorming.

Note - the short URL to An Interactive History of Climate Science is http://sks.to/history

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Comments

Comments 1 to 35:

  1. Great resource, much like the good Gapminder style.

    I moved the mouse over the circle, and the amount of papers on that year appeared. But when I clicked on it, nothing else happened. Is it just me?
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  2. You have to scroll down, Alexandre!
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  3. Oh. Of course. Thanks Mark!
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  4. I'm not sure about that categorization. I think that what's relevant is how many papers agree with the basic consensus that the Earth is warming and we are the primary cause. Many of the skeptic arguments wouldn't undermine that conclusion even if true.
    Overall I think that Oreske's method is simpler, clearer and more relevant to the discussion. If you want tu pursue this type of classification, maybe you could filter by argument. So the graph could tell you, for each argument, how many papers are for, and how many against.
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  5. Daniel@4 one of the ideas for a future version is to have a search option, so that you could select a topic and it will display the number of papers in each year for that topic in the appropriate 'argument'.
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  6. Great job with the app Paul, it's super cool. And nice work by Ari and Rob P to add so many papers, too!
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  7. It might be worth while to add tags that allow this to come up in google searches along side Pop[you-know-who]'s 900 papers.
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  8. Congratulations and kudos to all involved!
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  9. This is very cool and highly useful for tracking recent research, but I have to wonder about the accuracy of the early tabulations.

    For instance, Fourier's 1824 paper is listed as 'pro AGW'... but the concept of AGW wasn't even suggested until Arrhenius in 1896. I can sort of see this as 'pro AGW' in that Fourier detected the existence of additional warming which we now call 'the greenhouse effect', but he thought it was most likely due to cosmic rays... which we would now call a 'skeptic' argument. It could be said that Fourier's paper 'supported basic AGW principles' and the things it got wrong were reasonable mistakes at the time (in contrast to arguing cosmic rays NOW)... but it's a fine line.

    The other thing is that I have to wonder how complete the database is in regards to failed ideas in the early years. There were unquestionably alot of papers on the glacial cycle which suggested all kinds of causes having nothing to do with greenhouse gases. Again, taken a certain way it could be argued that as the AGW theory was not well known (or yet extant) at the time these papers were not 'skeptical' of it per se... but that inherently introduces a paradigm where papers would be classified as 'skeptical' more often as AGW theory became more established.

    Still, a great resource... and these definitional issues fall away as we get closer to the present and the most up to date science. Indeed, I'd love to be able to exclude years and thus easily see just what 'each side' has put out in the past few years.
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  10. Fab!

    I've dropped a heads up to Info is Beautiful.
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  11. Would it be possible to see the raw data in a spreadsheet format? (just like Information is Beautiful usually does)
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  12. The possibilities inherent in this graphic approach are stunning for so many areas of human discourse. However, in this case, I wonder about the use of the term "peer-reviewed" when it seems that a skeptic argument published in a known echo chamber for a specific political agenda is given, at least visually, the same weight as a paper published in a peer-reviewed scientific publication. The first skeptic article I checked was published in "American Thinker" which is not a science based publication.
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  13. @Jampack:
    I would tend to think that those that have been grouping these papers are more careful than that. Did you go to the page that has the papers (so on) sorted by argument? There is an option to only filter down to peer reviewed papers, were you sure to click on that?
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  14. I don't understand what makes a paper neutral. I think this particular graphic is hampered by the large number of neutral. A skeptic will think "well all those neutrals are ACTUALLY skeptical" and all the pro-science people with think "well all those neutrals are ACTUALLY pro-AGW".

    I think a different metric is needed. Maybe "supports current understanding" or "supports climate myths".

    I am not saying it is easy.
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  15. This seems to be a great tool to look for certain types of historical papers, especially after including DaneelOlivaw's (#4) idea. To look at a particular year, I went to the previous year, then slid the bar to add one more year, and watched where the circle landed.

    I've read in Sks, Climate Progress and elsewhere that some scientific papers specifically skeptical about one or another AGW topic have been demonstrated in subsequently published papers to have serious errors, making the skeptical paper's existence (or at least part of it) moot. As I read into CBDunkerson's comment above (#9), all sorts of papers get left behind by developing science. I'm sure there are recently published pro AGW papers that have been effectively refuted by subsequent publications (undoubtedly also pro AGW papers). Could the database identify at least the most grievous of such subsequently refuted or "left behind" papers? Perhaps little circles showing publication years of subsequently refuted papers? Perhaps footnotes by the actual paper titles identifying "partially refuted by subsequent literature" or "substantially refuted by subsequent literature."

    I'm curious about the 1960 CO2 concentrations paper (pro AGW) Table 1 with some hand written numbers and checkmarks!
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  16. Oooh, that's a good idea, Tor B.
    Perhaps add a red circle to the bundle when papers are refuted by subsequent research? That'd be interesting to see where all the red dots ended up, and how big they were.
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  17. Any chance of uploading your full database to Zotero ?

    And creating a guest account with read-only privileges ?
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  18. On a funny, and off topic note, I note that the applet gave a decent representation of the dynamic of granulate segregation. Hence, if you move slowly the slider circle land in a orderly way as the smaller one drop on each other first. But, if you move the slider fast, all circle fall at the same moment. Nevertheless, the smaller one end up in the core as expected from the granulate physical behaviour.

    Double dip science in progress.
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  19. Perhaps the refuted paper should travel to "refuted" bin after the year the refutation has been published?
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  20. Well done. Nice presentation. Tor B's idea above to improve it is important.

    Some are likely to use the same graphic and say "Look! There is a substantial number of papers that argue against AGW. Hardly a consensus!"

    It would be very useful to be able to identify refuted and erroneous papers and even remove them from the graphic as well. This would also reflect the actual nature of scientific consensus: that it is not merely majoritarianism.
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  21. Refutations. Might require a fair bit of faffing about.

    1. Providing a link to a published paper which explicitly refutes the evidence/ conclusions after publication of the relevant item should be fairly straightforward. A little red dot, per paper rather than per refutation, in the relevant circle would be handy.

    2. Some egregiously wrong papers which ignore or try to override others' well-accepted work could also have some indication (with a pale pink dot?) / link to a list of published works which contradicted the paper before it was ever written.

    3. The thorny problem. Many truly dreadful papers are not refuted in formal papers by others after publication because the competent scientists just can't be bothered (again, and again, and again). But there are letters and similar critical responses where bad papers somehow made it into reputable journals. No idea how this might be incorporated.
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  22. Just found this NYT timeline which starts in the same year, although later it deviates from purely research papers:

    http://www.nytimes.com/interactive/2009/12/07/science/20091207_CLIMATE_TIMELINE.html

    However it has a similar groupings of events, with a greater density in modern times.
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  23. This is considered to be a peer reviewed paper opposing AGW? Found in the 2010 skeptic list.

    http://www.americanthinker.com/2010/09/climatism_redoubling_misguided.html
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  24. Thanks for the note on the American thinker paper. I changed it to "online article". The database is not complete and perfect in any sense. There most likely are plenty of mistakes. The interface for adding papers is such that it is very easy accidentally select wrong choice for example for media type.
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  25. Changing Heat-Related Mortality in the United States (2003-11-01) is listed as skeptic. I think it's just irrelevant. From the abstract:

    "This systematic desensitization of the metropolitan populace to high heat and humidity over time can be attributed to a suite of technologic, infrastructural, and biophysical adaptations, including increased availability of air conditioning"

    So it's saying that people buy AC units. I don't see why would this be relevant to global warming.
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  26. Sorry for the double post. From the paper istelf:
    "Evaluations of global surface temperature histories, after accounting for urban warming biases and other influences, indicate that the globe has warmed approximately 0.67°C since 1900.(...)Furthermore, based upon scenarios of future increases in greenhouse gas emissions, climate models estimate a globally averaged temperature rise of 1.4–5.8°C between now and the year 210"

    So even if it's irrelevat to the assessment of the reality of AGW, it implicitly accepts the consensus opinion.
    (link: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1241712/pdf/ehp0111-001712.pdf)
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  27. This is a wonderful visualization. However...

    ...I'm a bit "skeptical" about the numbers. Specifically, they don't seem to square very well with the numbers in Peterson (2008) -- as pointed out in severa SkepticalScience posts (see here, for example: http://www.skepticalscience.com/christy-crock-1-1970s-cooling.html). Petereson found a total of 71 peer-reviewed publications on the topic of global warming and climate change in the 15-year period 1965-1979.

    Yet according to the graphic in this post, the year 1975 alone had 240 publications. Something seems askew...
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  28. Continuing from my previous post... if I do a web of knowledge search for "global warming" or "climate change" in the topic [which is searching (i) Science Citation Index Expanded (SCI-EXPANDED); (ii) Social Sciences Citation Index (SSCI); and (iii) Arts & Humanities Citation Index (A&HCI)], I find only 4 peer-reviewed publications for 1975 -- a far cry from the 230 publications for that year that this graphic indicates. Not sure yet why the spectacular discrepancy, but would be interested to year from the creators...
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  29. Two points Aunt Sally:

    1. the numbers in the interactive graphic are cumulative. There are only 4 "pro-AGW papers" for 1975 in the graphic.

    2. "global warming" and "climate change" are restrictive designators for climate-science related research. If you use a less restrictive designator (e.g. "climate") there are lots of potentially relevant papers from 1975. For example of the 164 hits from a ISI Web of Science search for topic "climate" (year=1975), the following papers are likely to be relevant, and this list is only from the first 40 out of 164 hits:

    PARAMETERIZATION OF CLIMATE - GLACIER - RELATION
    Author(s): HOINKES H, STEINACKER R
    Source: RIVISTA ITALIANA DI GEOFISICA E SCIENZE AFFINI Volume: 1 Pages: 97-104 Supplement: Suppl. I Published: 1975

    THEORY OF ENERGY-BALANCE CLIMATE MODELS
    Author(s): NORTH GR
    Source: JOURNAL OF THE ATMOSPHERIC SCIENCES Volume: 32 Issue: 11 Pages: 2033-2043 Published: 1975

    EFFECTS OF CHANGING SOLAR CONSTANT ON CLIMATE OF A GENERAL CIRCULATION MODEL
    Author(s): WETHERALD RT, MANABE S
    Source: JOURNAL OF THE ATMOSPHERIC SCIENCES Volume: 32 Issue: 11 Pages: 2044-2059 Published: 1975

    CARBON DIOXIDE CLIMATE CONFUSION
    Author(s): SCHNEIDER SH
    Source: JOURNAL OF THE ATMOSPHERIC SCIENCES Volume: 32 Issue: 11 Pages: 2060-2066 Published: 1975

    Title: LONG-TERM CYCLES IN VARIATION OF ATMOSPHERIC RADIOCARBON, RELATED TO CHANGES IN HOLOCENE CLIMATE
    Author(s): MCFADGEN BG
    Source: SEARCH Volume: 6 Issue: 11-1 Pages: 509-511 Published: 1975
    Times Cited: 1

    NONSPHERICAL AEROSOLS AND CLIMATE
    Author(s): CHYLEK P, COAKLEY JA, GRAMS GW
    Source: TRANSACTIONS-AMERICAN GEOPHYSICAL UNION Volume: 56 Issue: 12 Pages: 997-997 Published: 1975

    CLOUD PARAMETERS FOR CLIMATE STUDIES
    Author(s): COAKLEY JA
    Source: TRANSACTIONS-AMERICAN GEOPHYSICAL UNION Volume: 56 Issue: 12 Pages: 997-998 Published: 1975

    ROLE OF DESERTS ON GLOBAL CLIMATE
    Author(s): ELLSAESSER HW
    Source: TRANSACTIONS-AMERICAN GEOPHYSICAL UNION Volume: 56 Issue: 12 Pages: 998-998 Published: 1975

    WEATHER AND CLIMATE MODIFICATION - HESS,WN
    Author(s): SEWELL WRD, FOSTER HD
    Source: HUMAN ECOLOGY Volume: 3 Issue: 4 Pages: 289-291 Published: 1975

    CLIMATE OUTLOOK - VARIABLE AND POSSIBLY COOLER
    Author(s): LANSFORD H
    Source: SMITHSONIAN Volume: 6 Issue: 8 Pages: 140-& Published: 1975

    RECENT SECULAR VARIATIONS IN MID-ATLANTIC WINTER EXTRATROPICAL STORM CLIMATE
    Author(s): RESIO DT, HAYDEN BP
    Source: JOURNAL OF APPLIED METEOROLOGY Volume: 14 Issue: 7 Pages: 1223-1234 Published: 1975

    CLIMATE RESPONSE AND FLUCTUATION DISSIPATION
    Author(s): LEITH CE
    Source: JOURNAL OF THE ATMOSPHERIC SCIENCES Volume: 32 Issue: 10 Pages: 2022-2026 Published: 1975

    NUMERICAL EXPERIMENT ON EFFECTS OF REGIONAL ATMOSPHERIC POLLUTION ON GLOBAL CLIMATE
    Author(s): KOENIG LR
    Source: JOURNAL OF APPLIED METEOROLOGY Volume: 14 Issue: 6 Pages: 1023-1036 Published: 1975

    APPLICATION OF SOIL DUST OPTICAL-PROPERTIES IN ANALYTICAL MODELS OF CLIMATE CHANGE
    Author(s): RUSSELL PB, GRAMS GW
    Source: JOURNAL OF APPLIED METEOROLOGY Volume: 14 Issue: 6 Pages: 1037-1043 Published: 1975
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  30. If Climatologists could accurately predict the weather a year in advance, then people would have a reason to trust predictions made for 20 or 100 years out. For now, no one has any reason to accept the climate studies.
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    Moderator Response: [Dikran Marsupial] climate modelling does not depend on the ability to predict weather, only simulate weather with similar statistical patterns. They are based on Monte Carlo simulation methods, a well established branch of statistics developed for the Manhattan project, and have been successfully used to model a very wide range of complex dynamical systems. Climate is the long term statistical behaviour of the weather. Weather is chaotic and unpredictable, its long term statistical behaviour however is not, and can be predicted with useful skill, see for example Hansens 1988 pojections. The above comment is commonly encountered in discussions about climate models, however it is indicative of a lack of understanding of the way in which climate models operate and of the difference between climate and weather.
  31. Based on a quick perusal of some of the 'skeptic' papers from just one year (2010) I found that 4 of the 6 papers I actually read (out of 27, I'm busy today) were *NOT* skeptic papers. In fact, in these papers the authors were in general looking at local climatological patterns, and short temporal scales, and in most cases implicitly or explicitly taking climate change into account. This is a small sample, but based on it I'm somewhat dubious about the proper classification of a sizable fraction of the papers in these sets.
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  32. Your widget to add papers is being gamed. Take a look at the Skeptic papers for 2011.


    I found multiple papers that were assigned to 2011 to be years and sometimes decades earlier:

    http://www.sciencedirect.com/science/article/pii/S0273117797004997

    http://resources.metapress.com/pdf-preview.axd?code=t341350850360302&size=largest

    http://ruby.fgcu.edu/courses/twimberley/EnviroPhilo/ProgressReport.pdf

    And that is only the first couple of dozen cites. You have others that duplicates and some that not even peer reviewed. I would like to give a more complete list but I am afraid I will get caught in the spam filter.
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  33. More evidence of shenanigans:

    I know that moderators on this site do not consider Energy and Environment a peer reviewed journal but yet here they are being listed:

    http://www.eike-klima-energie.eu/uploads/media/EE_21-4_paradigm_shift_output_limited_3_Mb.pdf


    Some of the papers do appear in professional journals but are opinion articles entirely unrelated to any science. For example here is a opinion piece found in a Law Review Journal:

    http://ojs.ubvu.vu.nl/alf/article/view/127/233


    Others are double wammies of being not only decades out away from 2011 but are cited twice. I noticed that the duplicated were done within a week of each other:

    http://www-eaps.mit.edu/faculty/lindzen/127co2~1.pdf
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  34. More inappropriate year papers:

    http://eaps.mit.edu/faculty/lindzen/cooglobwrm.pdf

    http://eaps.mit.edu/faculty/lindzen/dsttrotrov.pdf

    http://www.dvgu.ru/meteo/library/19955332865.pdf

    I am not being thorough here at all. I am just beginning to recognize that the multiple submissions that occurred on the same date such as 2011-9-15 warrant being clicked on.
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  35. And here is cite that does not go to a peer reviewed paper at all:

    http://www.c3headlines.com/peer-reviewed-studies/


    Another Energy and Environment paper from 2010 listed in 2011:

    http://multi-science.metapress.com/content/c47t1650k0j2n047/?p=7857ae035f62422491fa3013c9897669&pi=4


    And again more inappropriate year cites:

    http://www.mendeley.com/research/climate-change-detection-attribution-trends-longterm-geologic-data/

    I will stop now but please consider that is just a perusal of the year 2011. I have not even begun to look at 2012 submissions.
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