• PRO

    Is Global Warming (now on GW) real or is it myth? ... The...

    Global Warming is Real.

    Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth’s climate. Is Global Warming (now on GW) real or is it myth? Rules : 1. The first round is for acceptance. No argument will be posted. 2. We are dealing with facts and evidences, here. 3. The maximum number of videos allowed to be posted per round for each user is 2 (two). 4. The maximum number of images allowed to be posted per round for each user is 5 (five).

    • https://www.debate.org/debates/Global-Warming-is-Real./1/
  • CON

    The earth is about 4.54 billion years old. ... The fact...

    Climate denial is unusual in the scientific community

    "You presumed that because a claim has been poorly argued, or a fallacy has been made, that the claim itself must be wrong." I have assumed no such thing. But Mr. Merrill's admission that his argument is poorly made is interesting. I would like to point out 2 things wrong with Climate Alarmists' arguments: 1) There are a very large number of Climate and Climate related scientists that do not believe in, or are skeptical of Climate Alarmists assertions. One flaw in this particular branch of science is how the "community" is dealing with "discenters". Most of those who "deny" AGW are treated with Ridicule and Scorn, have their jobs threatened, and have simply opted to leave because of the treatment they receive. http://goo.gl... http://goo.gl... http://goo.gl... http://goo.gl... 2) To understand abnormal, we must first have the baseline for which the discussion can be built. In the Climate Alarmist v. Climate Denier argument, there are 3 critical pieces of information that have not been fully addressed: What is "Normal" or "Optimal" when it comes to Temperature, Carbon Dioxide, and Climate. How can we know what is "out of the ordinary" if what is "normal" is never exposed? Do we simply assume that the climate of the past 50, 100, 1000, years is "normal" and any deviation from that "normalcy" is "abnormal"? At what point do we say we have a good idea of what "normal" is? And what is "normal"? How about the period in our recent history where the Earth hit a point called "the Holocene Climate Optimum". It was between 4c and 6c warmer than our current temperatures today. Is this "normal"? Is it "optimal"? Or the Little Ice Age? Is that "normal" or "optimal"? Please define both NORMAL and OPTIMAL ... Mr. Merrill continues: "Pointing out the logical fallacies of an argument is not Ad Hominem, Blind Loyalty, or 'ignoring every argument.'" When the BULK of an argument concentrates on perceived fallacies, without benefit of using verifiable sources to argue the points made, it is. For instance, Mr. Merrill perceived an "appeal to nature" fallacy but ignore that a great many things ARE natural. Like the fluctuations of climate, for which we are having this discussion. How is an appeal to a scientific fact a logical fallacy? Mr. Merrill does the same here, in this reply. He has stopped arguing the points of contention to spend his time dealing with perceived fallacies, as explained below. Mr. Merrill: "I took three paragraphs to explain the science of the Greenhouse Effect and its associated concerns, and that they had been ignored by Con and misrepresented with concerns about wildfires and hurricanes." Ignored? Misrepresented? To your first paragraph (Atmospheric CO2), I responded with 6 of my own. I discuss everything from the positive effects of increased CO2 and Biomassing to the evidence that shows CO2 increases FOLLOW, not PRECEDE the Temperature Increases. I also discuss the lack of definition of "OPTIMAL" and question why events such as "warming", "wetting", "cooling" and "drying" are witnessed before the "industrial age" before MAN can be blamed for the anomalies. Instead of dealing with these issues, Mr. Merrill wants to "drop" this subject, "Could we perhaps call this a 'dropped point'?" Sorry, Mr. Merrill, I will not let you ignore the scientific facts that the climate is in flux, has been for millions (billions) of years, and will continue to be. Mr. Merrill continues: "Please observe the image from [4], "NASA: How Do We Know?" Showing the PPM chart." The earth is about 4.54 billion years old. 650,000 years is only approximately .0143% of the geologic timescale available. See: http://goo.gl... Mr. Merrill then misrepresents the facts in his statement, "The image from [32] 'NASA: Global Climate Change Consensus' shows the spike in 'temperature anomaly' in the last seventeen years". The chart shows a change in temperature over the past 132 years. The last 17 years are shown in the far right side of that graph, which does, clearly, show a slowing in temperatures. See: http://goo.gl... http://goo.gl... http://goo.gl... Mr. Merrill continues: "... greenhouse gases." Logical Fallacy: Red Herring -- I have not taken issue with "greenhouse effect" or "greenhouse gases", I have taken issue with what the Climate Alarmists are calling "unprecedented global warming due to man's activity". Mr. Merrill: "we should also recognize that air content has very real potential to change air temperature." Which may be true AND ignores the proofs given in my previous argument that Temperature has been shown to PRECEDE increases in CO2. The fact that CO2 increases AFTER the Temperature increases is interesting and should merit further study. The science is most definitely not settled. Further, Mr. Merrill, here and in [35] below, demonstrates an inability to draw parallels, "I appreciate that Con has dropped his Appeal to Nature, but drawing parallels between religious extremism (apocolypse predictions and geocentrism) and empirical climate change is not an ideal upgrade." Finally, we note, Mr. Merrill, that you fail to deal with the other portions of my response to your arguments; the second paragraph, "Atmospheric Ozone", and the third paragraph, "Oceanic". Instead, he continues his fallacious denial, which I will now deal with: 35. "This is about the non-existent link between MMR and autism, and Con is hoping that it disproves the link between greenhouse gases and climate temperatures." Alarmism does not good science make. 36. See [35] 37. "In addition to neglecting complexity, this has nothing to do with whether climate change is anthropogenic." Mr. Merrill is ignoring the science which shows that higher concentrations of CO2 are not "bad" but "good" for the Biosphere. This goes to the NATURAL nature of Climate Change and the Earth's response to those changes. Ignoring the science to make a point is, well, a fallacy. 38, 39, 40. See [37] 41. "Con posted this to support his claim that scientists are still arguing whether CO2 levels cause high temperatures, or whether high temperatures cause high CO2 levels." Correct. Because it is hard to claim, as Climate Alarmists do, "man made CO2 is causing warming" if in fact the warming comes BEFORE the increase in CO2 levels. Thank you for conceding that point. 42, 43, 44. Mr. Merrill already conceded this point in [41]. "but is by Joannenova, a 'scientist' who never lists her accredidation and whose whose living is based off this blog." Logical Fallacy. If the information presented is correct, credentials or other factors are irrelevant. 45. "Con hopes this will disprove the idea that modern changes in air content could ever affect global temperatures." Assumption. If changes have happened, are happening and will happen, there is little we can do to change or alter those changes. Especially in the LONG TERM, as is shown, previously, by taking ALL the information, not less than 1% of the information available. 46. "Con hasn't really specified what he hopes this will prove." Logical Fallacy: Straw Man. I have said exactly what I hope to prove. The science is there to back it up. Ignoring it doesn't help your argument, dealing with it might. 47. "Con points to despite increasing CO2 levels. This is more evidence that he did not properly read my round 2: CO2 levels have nothing to do with ozone." Your attempt here is to ignore your own argument. In Round 2 you posted un-cited information that Ozone is one of the Anthropogenic causes for Global Warming. The science says this may be correct, and the science says the Ozone is on the mend, which removes this factor from the argument. 48. "but it's listed as a myth. " The only myth here is that CO2 causes warming, Mr. Merrill already conceded this point in [41]. 49. "Con meant to use this to demonstrate that arctic ice is normal" Maybe Mr. Merrill can explain what "standard deviation" means? 50. "Con is once again insisting on using polar bear populations as our primary whether forecast." Mr. Merrill is using yet another Logical Fallacy: Straw Man. Mr. Merrill is ignoring the fact that Climate Alarmists have been using things like "melting ice caps" and "disappearing polar bears" for years to make their point (also a Logical Fallacy, as pointed out, "Appeal to Emotion"). Yet, this is proven incorrect, polar bear populations are well on the increase. I will take Mr. Merrill's response here to mean he agrees with this point, and move on. 51. See [50] 52. "It's another blogger's un-peer-reviewed attempt at science, see [44]." Here Mr. Merrill ignores the actual evidence on the page cited. He uses a Logical Fallacy: Poisoned Well, because its a blog. On that page we find a reference to peer-reviewed science that states, "This suggests that this warming episode is mainly due to internal dynamics of the ocean rather than external radiative forcing.", http://goo.gl... Using Logical Fallacies in this way only hurts Mr. Merrill's arguments, not helps them. 53, 54, 55. See [37] 56. "This shows only slight ocean warming over the course of eight years - not even a decade." Mr. Merrill either didn't read the whole article, or is hoping it will "go away" as there are charts that show data from the 1950s. That is far more than 8 years. The data of the last 8 years simply shows the trend, as with the last 15-18 years of Global Temperatures, to have slowed its warming trend. This is valid information, because as above, Mr. Merrill has denied that any such thing happened, when it has been shown that it has happened. See the posted charts above. 57. Mr. Merrill is again misrepresenting the facts of the article presented. The fact is, as the opening statement suggests, "The fact is that we can"t account for the lack of warming at the moment and it is a travesty that we can"t." -- Kevin Trenberth, head of the Climate Analysis Section at the US National Center for Atmospheric Research.

    • https://www.debate.org/debates/Climate-denial-is-unusual-in-the-scientific-community/1/
  • CON

    The changes take place over a long period of time, yes....

    Global Warming is Real.

    Thank you to my opponent for allowing me to participate in this debate! I look forward to an intellectually challenging discussion. Now to my opening arguments. The key to determining whether or not "Global Warming" as defined by my opponent is a myth or not, is the definition he provided: "Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth’s climate." Firstly, the belief that a warming period observed by our scientists and thought to be caused by man is permanent is misguided. The simple reality is, these changes are in no way permanent. We know that the climate millions of years ago was different, more humid and warm, and we also know that we have had ice ages in the past. We know that the climate during the first millenias of earth's existence were exceedingly moist and warm as well. We can, therefore, rightly acknowledge that it is not simply global warming that we see, but climate change. But is it permanent? The answer, of course, is no. For support, I point to the Great Oxygen Event, which took place nearly 2.4 billion years ago. Cyanobacteria, living organisms on earth, produce oxygen through photosynthesis. The Great Oxygen Event occurred when the cyanobacteria began to produce so much oxygen that the natural consumers of their oxygen could not keep up, and the earth's atmosphere became saturated with free and pure oxygen. Pure oxygen was not seen extensively in that time, and as such, the result of the increase in oxygen's concentration in the atmosphere was a mass extinction event of all organisms who did not require oxygen to live. Furthermore, the oxygen reacted with the methane in the atmosphere to produce the Huronian Glaciation, a 300 million year long period of cold temperatures and formations of glaciers.[1] And yet, here today we see that life as moved on. The earth has grown, experienced many more changes in climate, from more ice ages to warm humid climates yet again. The changes take place over a long period of time, yes. But the changes that lead to the Great Oxygen Event were extremely rapid in the reckoning of geology. Modern estimates believe that photosynthesis taking place at the rate we see today could have generated the Great Oxygen Event in roughly 2,000 years. [2] The driving point behind this argument is that Rapid climate change is not new, nor should it be unexpected. It has happened before, and it very well may happen again. Now, I will move to a key argument against the fears propagated by Climate Change enthusiasts. Humans exist naturally on earth, we evolved to this point of intelligence and biological stability as a species through nature. Our very existence is a natural thing. How then, can anything we do be considered unnatural? We were not plopped down on earth suddenly. It is not as if we use magic to convert these natural materials into fuel and gases. We operate under the confines of nature's laws, being of nature herself. Our use of fossil fuels, then, is not unnatural at all. We are simply utilizing the tools nature gave us to promote our livelihood, much like the Cyanobacteria were doing. And arguably, the cyanobacteria operated at a much faster rate than we do. The warming of oceans by mere fractions of degrees per decade will not spell the end of Earth, nor will it wipe out all life. Just as after the Great Oxygen Event and Huronian Glaciation nature survived and thrived, so too will life on earth survive and thrive even after we are gone, whatever the cause of our disappearance may be. If, then, the use of fossil fuels is natural, having occurred by a natural process and set in motion by a natural life form, and rapid climate change originates not just from man, but from the rest of nature as well, what is all the fuss about? The threat posed by climate change is not directed towards the Earth, or even towards Nature itself. It is directed towards us. Humans are the ones who will be in danger if we continue to burn fossil fuels. Not nature. Nature survives, nature has survived more devastating occurrences than man could ever hope to throw at it. Whole continents have crashed together, been torn apart, mountain ranges have been battered down and raised up, violent volcanic eruptions and earthquakes, monstrous meteors and asteroids, and massive extinction events have all occurred during the span of Earth's life. Is it not prideful, arrogant even, to think that Man can possibly compete with such devastating forces? To think that man might be able to destroy nature, when we have barely left a mark with our most powerful weapons of destruction? To sum up my arguments: 1) It is not Global Warming specifically that we observe, but Climate Change, both warming and cooling. The effects of Global Climate change in one direction or another are not permanent. Nature adapts and moves on after every great event. 2) Global Climate Change, whether rapid or slow, is a natural occurrence, and the example of the Great Oxygen Event shows that organisms on Earth have been altering the climate for hundreds of millions of years. We cannot, therefore, expect to leave the climate completely untouched. Nor is it wrong for us to utilize the intelligence nature gave us to promote our livelihood. 3) Because Global Climate Change is a natural occurrence, whether or not it originates from Man, it is nothing for nature or the Earth to fear, and nor is it our duty to fear for Nature or the Earth. Rather, we are the ones who will be adversely affected. I now hand the debate back to Pro. [1]http://www.bbc.co.uk... [2]http://www.ncbi.nlm.nih.gov...

    • https://www.debate.org/debates/Global-Warming-is-Real./1/
  • CON

    This would not be the best way to determine if climate...

    The best method to determine whether or not man made climate change is true is reduction of Co2.

    This would not be the best way to determine if climate change is man made because we alread know that it isn't, and if we reduced our CO2 emmissions this would cripple our economies severely.

  • PRO

    Well, take disease - it's natural, that's a scientific...

    Climate denial is unusual in the scientific community

    Far from being alarmists, scientists ground themselves in uncertainty because “The whole problem with the world is that fools and fanatics are always so certain of themselves, and wise people so full of doubts” (Bertrand Russell). Politics and business reward leadership qualities, drawing fools and fanatics, while science and academia draw thinkers who question themselves. “Not to be absolutely certain is, I think, one of the essential things in rationality” (Russell). The IPCC rightly holds that "There will always be uncertainty in understanding a system as complex as the world’s climate” [58]. But although politics by nature is unscientific, the scientific community takes firm stances on issues that relate solely to science. “When one admits that nothing is certain one must, I think, also admit that some things are much more nearly certain than others” (Russell). And on that note, the IPCC continues its statement, “However there is now strong evidence that significant global warming is occurring. The evidence comes from direct measurements of rising surface air temperatures and subsurface ocean temperatures and from phenomena such as increases in average global sea levels, retreating glaciers, and changes to many physical and biological systems. It is likely that most of the warming in recent decades can be attributed to human activities" [58] Con appears confused: “Mr. Merrill's admission that his argument is poorly made is interesting,” so it seems I must rephrase with greater specificity: Con presumed that because he could provide nine links that highlight second-decimal mistakes in climate prediction (round 1), climate science itself is a mistake, not unlike presuming that because one could find nine physicists who made mathematical mistakes, astronomy itself is a mistake. This I referenced as "the fallacy fallacy," to which Con responded with incredulity [59], "this is the first time that I have ever seen someone employ the "logical fallacy" card in a way as to be, in itself, a logical fallacy" (round 2). . . though I am sure Con would love to believe I admitted to making a poor argument myself! To Con’s question on the Appeal to Nature fallacy, how is an appeal to a scientific fact a logical fallacy? Well, take disease - it's natural, that's a scientific fact. "Appealing to" that fact doesn't just mean pointing out that it's natural, it means concluding that nothing can or should be done about it. "Because something is 'natural' it is therefore valid, justified, inevitable, good or ideal" [30]. This is Con’s argument that because climate fluctuations occur naturally, they cannot result from human activity. I did misrepresent that temperature anomalies chart, it showed 132 years. My apologies. It showed highly fluctuating anomalies in the last 17 years. If Con agrees with the Greenhouse Theory as he so surely claims, he cannot deny that significant increases in CO2 stand to boost global temperature. Con appreciates that my summary of source 41 conceded his point. I wrote it, I just re-read it, and I don’t know what he’s talking about. “A causes B” and “B causes A” - it’s a simple positive feedback loop. "The scientific evidence is clear: global climate change caused by human activities is occurring now, and it is a growing threat to society" AAAS [60] This is not to be confused with political tactics like naming hurricanes after climate deniers. Science is defined by method which involves peer-review, and is not to be confused with the claims of political bloggers, activists or pundits. "Comprehensive scientific assessments of our current and potential future climates clearly indicate that climate change is real, largely attributable to emissions from human activities, and potentially a very serious problem." - ACS [61] Nothing about the end of the world, just that it’s a growing threat to society - probably one of many. "It is clear from extensive scientific evidence that the dominant cause of the rapid change in climate of the past half century is human-induced increases in the amount of atmospheric greenhouse gases, including carbon dioxide (CO2), chlorofluorocarbons, methane, and nitrous oxide." AMS [62] The AMS view is important here, because of Con’s source that headlines, “Meteorologists are Global Warming Skeptics.” It’s a strange headline for an article whose actual content states that “According to American Meteorological Society (AMS) data, 89% of AMS meteorologists believe global warming is happening, but only a minority (30%) is very worried about global warming.” Not skeptics, just not alarmists either. It’s ironic that Con is the only debate participant here who believes scientists are alarmists on this issue. "The evidence is incontrovertible: Global warming is occurring. If no mitigating actions are taken, significant disruptions in the Earth’s physical and ecological systems, social systems, security and human health are likely to occur. We must reduce emissions of greenhouse gases beginning now." APS [63] No threats or bargains here, nothing about whether it’s America’s fault or China’s fault, or whether this means we have to stop driving cars. This is about science, and science with a political target or without proper peer review is not science. It’s easy to find geologists who are skeptical of global warming - they’re paid to find oil, not think about its effect on the air. They don’t perform peer-reviewed research. But the Geological Society of America, speaking for the science of geology over the business of it, concurs that Global Warming is anthropogenic. "The Geological Society of America (GSA) concurs with assessments by the National Academies of Science (2005), the National Research Council (2006), and the Intergovernmental Panel on Climate Change (IPCC, 2007) that global climate has warmed and that human activities (mainly greenhouseR08;gas emissions) account for most of the warming since the middle 1900s." GSA [64] And the American Geophysical Union agrees, "The Earth's climate is now clearly out of balance and is warming. Many components of the climate system — including the temperatures of the atmosphere, land and ocean, the extent of sea ice and mountain glaciers, the sea level, the distribution of precipitation, and the length of seasons — are now changing at rates and in patterns that are not natural and are best explained by the increased atmospheric abundances of greenhouse gases and aerosols generated by human activity during the 20th century." - AGU [65] Sometimes the medical community even chips in: "Our AMA ... supports the findings of the Intergovernmental Panel on Climate Change’s fourth assessment report and concurs with the scientific consensus that the Earth is undergoing adverse global climate change and that anthropogenic contributions are significant." - AMA [66] 58. http://t.co... 59. https://t.co... 60. http://t.co... 61. http://t.co... 62. http://t.co... 63. http://t.co... 64. http://t.co... 65. http://t.co... 66. https://t.co...

    • https://www.debate.org/debates/Climate-denial-is-unusual-in-the-scientific-community/1/
  • PRO

    The laws and regulations are at issue. ... There are a...

    Global climate change should not be a major factor in US energy policy

    "Global climate change" means the climate effects, whatever they might be, of humans introducing carbon dioxide into the atmosphere. "US" is the United States of America. "US energy policy" in this debate means prohibitions or incentives provided by the US government with regard to the US development or use of carbon-based fuels for energy. This includes outright prohibitions on the development of oil, oil shale, tar sands, natural gas, and coal, as well as disincentives and obstacles aimed at minimizing their use. Energy policy includes subsidies and mandates for use of non-carbon alternatives. Restrictions or incentives aimed at other purposes are not a subject of this debate, nor is the funding of research projects. The US does not have an official energy policy, but it has many laws and regulations that constitute a de facto policy. The laws and regulations are at issue. A "major factor" is one that may determine a policy outcome, as distinct from factors that might either accrue as side benefits or weigh as disadvantages of a policy. Standard dictionary definitions are used, with the context used to select the appropriate definition. In this debate, "flow through sources" are allowed. If a blog, book, popular article, or Wikipedia is used as a reference, and if the data cited is referenced from another source the implication is that the original source is referenced. Sometime a blogger plots some data in a convenient form for presentation, so it's helpful to reference the graph. The data is argued from it's source. Cited opinions stand or fall on their individual merits as being authoritative or not. Reference lists or arguments beyond the debate 8000 character limits are not allowed. The first round is for acceptance and definitions. There are a total of four rounds.

  • CON

    IE I think ALL power needs to come specifically from...

    "Fixing the Climate" should be a Low Priority for the USA

    As a reminder to the judges and my opponent, The debate is on whether or not the US should make the terraforming of our earth a LOW priority or a med-high priority. I'm going to rephrase some of my opponent's arguments to be yes/no questions. See how many you agree with. 1. Scientists are sure there will be a catastrophe, But since they can't us exactly how many trillions of dollars it will cost it should be a low priority. 2. Since I as a non-scientist deem the scientist's proposed solutions unappealing, We should not fund their research fully until they have already developed solutions that appeal to me 100%. 3. If there isn't ONE solution to climate change we should not take the proposed solutions seriously. I don't think 20 different solutions that get us small portions of the way there is a viable way to deal with climate change. IE I think ALL power needs to come specifically from solar, Wind, Geothermal, Or nuclear. We can't use all of them. 4. I think when climate research is funded that money disappears off the face of the planet instead of being circulated back through the economy. All $2T of research (if that is true) is completely gone off the face of the Earth. (This is not how economies work) 5. I said funding for climate change should be the equivalent of the space race which was high priority but that doesn't mean I conceded that climate change should be high priority. 6. It shouldn't be governments that have to answer to the people that should deal with the terraforming of our planet, It should be private companies who aren't answerable to the people. 7. Other problems exist. We can't solve those other problems at the same time as we solve climate change, Because the scientists who study those problems definitely stop studying those problems and working on solutions to those problems and focus instead on areas of research outside of their field of study. Definitely. This is the problem with my opponent's line of reasoning. There need not be ONE solution to climate change. If something gets us 5% of the way there, That's great. If research is funded for solutions, We will find better and more practical solutions as well, Which may allow us more control over the climate in case the climate scientists are wrong and the climate starts cooling. Solar power CAN give us more than 100% of current power requirements easily. I'm not sure why he is pretending it cannot. I gave sources for this. The sun is a literal fusion reactor many times the size of our planet. I couldn't even get him to concede this point. We can work on multiple problems simultaneously. I can list hundreds of different problems. The sad fact is most of them don't lead to catastrophes. Diseases, Malnutrition, Poverty, And malaria in particular would all be significantly increased with a warmer climate. No economist agrees with tariffs and those can be gone whenever Trump wants. The negative terraforming of our planet is the most serious problem we face today.

  • CON

    I know this sounds like a semantic distinction but it's...

    CMV: There is no legal way to bring real change in the USA.

    Legal for who? Because there are absolutely legal ways for people in government to bring real change in the USA. Just because they don't make certain needed changes doesn't mean they aren't possible. I know this sounds like a semantic distinction but it's not. You have to keep in mind that there is no universal law saying, for instance, that politicians have to listen to lobbyists. They choose to do so, and they can choose not to. Just because it isn't simple, because it might harm their future prospects, because in reality it would take a while to untangle the repercussions, doesn't mean they can't choose not to. Saying otherwise is defeatism and downplays their responsibility. Following from that, one legal way to bring real change in the USA for someone currently not in government is to run for office. Which by no means is easy or guaranteed or something everyone wants, and when they're in office they can always, again, just not make the change, but it's been very effective for the Tea Partiers/Trump supporters and the changes they wanted.

    • https://www.reddit.com/r/changemyview/comments/l77o8v/cmv_there_is_no_legal_way_to_bring_real_change_in/
  • CON

    http://m.washingtonpost.com... ... The true debate is...

    Climate Shift

    I understand why you're confused about my argument. You seem to be equally confused about the scientific consensus which was claimed by the following article. http://m.washingtonpost.com... If you read the article again and pay special notice to the update the author added at a later time. 97% of scientists "who took a position" support global warming. However the reality is that 67% of published papers on the subject took no position at all. So 33% of scientist are the only ones being considered. That is not a very overwhelming consensus. As a matter of fact that is filtering the results to support a preconceived conclusion. The true debate is about the cause of climate change, as we already know it has changed many times before now.

    • https://www.debate.org/debates/Climate-Shift/2/
  • PRO

    An independent study published the same year found that...

    Global Warming is Real and is Manmade!

    In ROUND 1 my opponent provides us with numerous sources (primarily a list of doctors and Ph.D's with apparent expertise on the subject) that discredit the claim that global warming is happening or that it is a human created phenomenon. If we pay close attention to what these sources are saying, we'll find that they're actually arguing two different, incompatable things--revealing that my opponent isn't solidly defending exactly where elevations in surface temperature are coming from. One of his sources asserts that the gradual increase in the Earth's surface temperatures can be hocked up to "flawed temperature measurements", because of expanding cities and urban development, which traps heat; hence recordings that show an elevation in Earth's surface temperature over the years are actually showing spikes in artificial heat caused by expanding city development. His other sources argue that global warming is a natural phenomona and that the measurements of gradually rising temperatures are authentic but should be attributed to natural long-term climate patterns on Earth. From these two positions we see that my opponent is arguing that global warming is either (1) not happening, or (2) happening but not human created. In this debate I will demonstrate why the third option--global warming is happening and is manmade--is the best, most credible point-of-view, particularly in light of the multitude of scientific data [1]. The Overwhelming Majority of Climate Scientists and Climate Experts Say Global Warming is Real, Manmade In ROUND 1 my opponent cites an impressive but brief list of "experts" that claim global warming is either not real or isn't human facilitated. Here he's using the fallacy of appeal to authority to sell us his position, particularly since he's not posting any solid data (only assertions) to back up his claims. How can I possibly defend myself against his impressive (but brief) list of experts? Simple. By posting an even larger list of climate scientists and climate experts that hold the opposing view. Of course if I did only this I would be commiting the same fallacy. So I must also provide data and solid evidence to demostrate that global warming is both authentic and manmade. My opponent posted a seemingly impressive list of "experts" to show that there are scientists and capable professionals that oppose the popular view on global warming and climate change. (Some of those "experts" he cites have no qualifications in climatology and meteorology.) So how many authentic climate scientists (the ones that actually do research on this subject) believe in anthropogenic (manmade) global warming? According to the surveys and studies conducted to answer this, virtually all of them do [2][3][4]! The truth is the experts my opponent cites belong to a tiny but vocal minority (the ones that actually do research in this field, I mean). A study published in 2013 that quantified the scientific concensus on manmade global warming in scientific literature found that an overwhelming 97% of all scientific research studies that investigated the issue in some way agreed with or confirmed anthropogenic global warming [2][3]. The authors that conducted the study meticulously sifted through 12,000 research journals published over the span of decades to reach their findings [2][3]. An independent study published the same year found that 2259 peer-reviewed climate articles authored by 9136 scientists agreed with manmade global warming; only one author out of all the climate articles reviewed in that study rejected anthropogenic global warming [4]. And the world's foremost authorities on climate change--like the UN's International Panel on Climate Change (IPCC), the NASA Goddard Institute for Space Studies (NASA GISS), and the Japanese Metereological Agency, to name a few--all insist that global warming is real and manmade [5][6][7]. The UN's International Panel on Climate Change is by far the world's leading authority on climate change; made up of 195 member nations and consisting of 900 contributing scientists that investigate and report on the impact of a warming Earth, the panel is now 95% certain that global temperatures are rising and that humans are at fault [8][5]. Irrefutable Evidence that Global Warming is Authentic and that Humans are to Blame There is a plethora of unassailable evidence to show that global warming is real. Graphic data provided by the IPCC in one of its climate reports shows that most of the Earth's surface experienced an increase in temperature between 0.2 and 1.0 degree celsius between 1970 and 2004 (some places experienced a greater temperature increase; few places saw a temperature decrease): North America in particular has seen a dramatic increase in temperature (about 1 degree celsius) between 1955 to 2005, as depicted here (with some locations observing a more severe increase): To affirm the IPCC's data on the global temperature trend, data from the NASA Goddard Institute for Space Studies (NASA GISS) shows that with comparison to the base year 1945 (taken as the surface temperature average), temperatures have been increasing since 1910, and have been increasing more rapidly over the last 3 decades (see graph directly below) [1]. This data is consistent with other global temperature records provided by the U.S. National Climatic Data Center, the Japanese Metereological Agency and the Met Office Hadley Center [1]. Since the base year 1945, the Earth's average surface temperature has risen by 0.56 degrees celsius; since 1910, the Earth's average surface temperature has risen by 1.02 degrees celsius [1]. NASA shows that 2013 was the 7th warmest year on record, with the years 1998, 2002, 2003, 2005, 2007, 2010 only being hotter--and the hottest years being 2010, 2005, 2007 (in that order) [1]. Data shows no reversal in the Earth's average temperature change, toward the 1945 base year average. The Japanese Metereological Agency shows global warming data almost identical to NASA's: The NASA website has a lengthy page devoted entirely to the evidence for anthropogenic global warming [1]. Like the IPCC and the Japanese Metereological Agency, the NASA website asserts that global warming is a real phenomenon impacting the globe. And what evidence is there of this? A lot. Satellite data shows that 2012 had the lowest quantity of Artic Sea Ice on record--a shocking 3.62 million square kilometers, or less than 50% of the quantity recorded in 1980 (see graph immediately below) [1]! Since 2012, some of that Artic Sea Ice has returned, but year-to-year oscillation is to be expected. NASA's Grace satellites "show that the land ice sheets in both Antarctica and Greenland are losing mass. The continent of Antarctica has been losing more than 24 cubic miles of ice per year since 2002" (see graph directly below) [1]. And satellite sea level measurements show oceanic sea levels rising rapidly--with the trend accelerating in the last two decades. Data from NASA missions Jason-1, Jason-2/OSTM shows oceanic sea levels rising on average 3.16 mm per year from 1993 to 2013; this is nearly twice the oceanic sea level increase from 1870 to 2000 (see graph immediately below) [1]. NASA points out that increasing sea levels is caused by two factors: "the added water coming from the melting of land ice, and the expansion of sea water as [the Earth] warms" [5]. As you can see, NASA takes the issue of global warming seriously, and the impacting effects of disappearing land and Artic Ice and rising sea levels refute the notion that global warming is only a metropolitan heat Island phenomena--one of the arguments that my opponent makes in ROUND 1. As data provided by the UN's IPCC, the Japanese Metereological Agency and NASA confirm, global surface temperatures are indeed rising. The 10 warmest years on record have occured in the last 16 years. The warmest year ever directly recorded was 2010--just four years ago [1]. The effects of global warming continue to be felt and show no sign of halting. Sea levels are rising, coastal land is disappearing, polar sea ice is vanishing, land ice is melting. And the greenhouse gas with the most radiative impact in the atmosphere--CO2--continues to be churned out at crippling levels [1]. Year after year the concentration only increases and the Earth gets hotter [1]. In ROUND 1, my opponent falsely claims that increases in atmospheric carbon dioxide concentrations are caused by global warming--that they do not contribute to it. These are his exact words: "Rising CO2 levels are a result of global warming, not a cause of it." But here he's being blatantly dishonest. It's a well-established scientific fact that carbon dioxide is a heat-trapping greenhouse gas; its heat-trapping effects have been studied in laboratories throughout the world [9]. With the boom of the industrial revolution, which continues to expand into and dominate new countries on a yearly basis, human-induced global warming--through such actions as the burning of fossil fuels and deforestation--has led to an unprecendented increase in CO2 concentrations. Never in the last 400,000 years has the CO2 concentration been quite so high, as the graph below provided by NASA indicates [1]. This is something I will go over in the next ROUND. [1] (http://climate.nasa.gov...) [2] (http://www.washingtonpost.com...) [3] (http://iopscience.iop.org...) [4] (http://www.policymic.com...) [5] (https://uk.news.yahoo.com...) [6] (http://www.giss.nasa.gov...) [7] (http://www.data.kishou.go.jp...) [8] (http://ipcc.ch...) [9] (http://en.wikipedia.org...)

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