A recent poll of scientists in different fields has found that 97% of climate scientists who had published at least half of their peer-reviewed research in the climate field (a total of 76 out of 79 who participated in the survey (total number of particpants 3,146), Doran and Kendall Zimmermann, 2009) agreed that global temperatures are rising and that human activity was significant in this process. This is the mainstream scientific position.
It is hard to find any research scientist working in the fields of atmospheric science or climate who actually believes there has not been a rise in average global temperatures since the beginning of the Industrial Age. Richard Lindzen, a professor of Atmospheric Science but widely regarded as a contrarian, agreed that global warming is occurring and could be caused by increased carbon dioxide (CO2) levels but believed that scientists were not in a position to prove the connection. Garth Paltridge, retired Chief Research Scientist at the CSIRO Division of Atmospheric Research, agreed that there are good reasons to believe that burning fossil fuels could lead to global warming, but was uncertain as to how significant this would be.
Richard Muller, a Physics Professor and longtime critic of climate studies, set out to address what he called "the legitimate concerns" of sceptics who believe global warming is exaggerated. But Professor Muller unexpectedly told a congressional hearing the work of the three principal groups that have analysed the temperature trends underlying climate science is "excellent ... We see a global warming trend that is very similar to that previously reported by the other groups." It appears that Muller no longer believes that global warming is not real.
Doran and Kendall Zimmerman found that the members of the scientific community most likely to oppose the mainstream scientific assessment of global warming were economic geologists (typically employed by oil companies and the like), of whom only 47 per cent concurred.
Some other scientists who have opposed the mainstream scientific assessment of global warming are:
David Douglas, solid-state physicist, professor, Department of Physics and Astronomy, at the University of Rochester, argued that global warming was a natural process and stated in an article titled New Study Explodes Human-Global Warming Study: "The observed pattern of warming, comparing surface and atmospheric temperature trends, does not show the characteristic fingerprint associated with greenhouse warming. The inescapable conclusion is that the human contribution is not significant and that observed increases in carbon dioxide and other greenhouse gases make only a negligible contribution to climate warming"
Antonio Zinchini, emeritus professor of nuclear physics at the University of Bologna and president of the World Federation of Scientists has challenged the accuracy of IPCC climate projections, stating: "models used by the Intergovernmental Panel on Climate Change (IPCC) are incoherent and invalid from a scientific point of view [...] It is not possible to exclude that the observed phenomena may have natural causes. It may be that man has little or nothing to do with it"
Another eminent scientist to challenge IPCC projections is Hendrik Tennekes, retired Director of Research, Royal Netherlands Meteorological Institute who wrote in his article "A Sceptical View of Climate Models": "The blind adherence to the harebrained idea that climate models can generate 'realistic' simulations of climate is the principal reason why I remain a climate skeptic. From my background in turbulence I look forward with grim anticipation to the day that climate models will run with a horizontal resolution of less than a kilometer. The horrible predictability problems of turbulent flows then will descend on climate science with a vengeance"
Tim Patterson, paleoclimatologist and Professor of Geology at Carleton University, Canada, went even further. Giving evidence before (the Canadian) Commons Committee on Environment and Sustainable Development in 2006, he stated: "There is no meaningful correlation between CO2 levels and Earth's temperature over this [geologic] time frame. In fact, when CO2 levels were over ten times higher than they are now, about 450 million years ago, the planet was in the depths of the absolute coldest period in the last half billion years. On the basis of this evidence, how could anyone still believe that the recent relatively small increase in CO2 levels would be the major cause of the past century's modest warming?"
Another respected meteorologist to challenge "alarmist" claims, such as those made by ex-presidential candidate Al Gore in his film "An Inconvenient Truth" is Dr Dick Morgan. The former World Meteorological Organization and climatology researcher at the University of Exeter, contradicted claims made in the film, stating: "There has been some decrease in ice thickness in the Canadian Arctic over the past 30 years but no melt down. The Canadian Ice Service records show that from 1971-1981 there was average, to above average, ice thickness. From 1981-1982 there was a sharp decrease of 15% but there was a quick recovery to average, to slightly above average, values from 1983-1995. A sharp drop of 30% occurred again 1996-1998 and since then there has been a steady increase to reach near normal conditions since 2001." He went on to criticise the projections of the IPCC, stating: "Had the IPCC used the standard parameter for climate change and used an equal area projection, instead of the Mercator warming and cooling would have been almost in balance."
Another eminent scientist to Challenge the IPCC's findings is Professor Mojib Latif, a leading member of the IPCC, and head of a research team at the world-renowned Lebniz Institute, At Kiel University, Germany. Prof. Mojib and his team developed new methods to measure ocean temperatures at depths of upto a kilometre, where the cooling and warming cycles begin, and predicted a new cooling trend in a paper published in 2008 and reiterated his findings at an IPCC conference in Geneva in September 2009. On 10 Januray 2010, in an interview with the British Mail on Sunday newspaper he stated: "A significant share of the warming we saw from 1980 to 2000 and at earlier periods in the 20th Century was due to these cycles - perhaps as much as 50 per cent. 'They have now gone into reverse, so winters like this one will become much more likely. Summers will also probably be cooler, and all this may well last two decades or longer. The extreme retreats that we have seen in glaciers and sea ice will come to a halt. For the time being, global warming has paused, and there may well be some cooling."
Most scientists and scientific organizations round the world agree that global warming is happening. A few scientists disagree.
The work of 15 climate scientists is helping to educate the public about the overwhelming scientific evidence for human-caused global warming.
No. Although Al Gore himself is not a scientist, he has listened carefully to what scientists have to say about global warming. He is concerned about scientific predictions about the potential effects of global warming on society and the world as a whole, because that is what most scientists are telling him.
Yes, I respect the scientific opinion on this. Most climate scientists say that there is no doubt that global warming is happening and that we are contributing to that change.
This 2007 documentary suggested that climate scientists were influenced by funding and politics. It also suggested that there was no scientific consensus that humans were causing global warming.
There are many fears of scientists who write about global warming. Ozone depletion, floods, warming etc are some of them.
There are two views on whether global warming is real: the view of the overwhelming majority of climate scientists and the views of non-scientists. Most children are being taught the scientific view of global warming, which is that global warming is really happening. After all, by the time many of them are adults, they will have to cope with some of the problems expected to occur as a result of global warming.
Very few scientists are wrong about global warming, and most of those who are wrong are not climate scientists. Most scientists agree, ("there is broad scientific consensus", among scientific organizations around the world) that global warming is happening and it is predominantly caused by humans. We burn too much fossil fuel (coal, oil and natural gas), thus releasing carbon dioxide into the greenhouse gases in the atmosphere. We also cut down trees and forests all over the world. Forests absorb carbon dioxide and turn it into oxygen. The scientists who are wrong about global warming tend to be financed by the fossil fuel industry, or have strong religious or political motivations for denying reality.
A small minority of scientists, approximately 3%, do not believe in global warming.
Yes. The application of scientific knowledge has proven that global warming is real and has established that it is, amongst other factors, the result of human activities such as burning fossil fuels (coal, oil and natural gas).
A sentence using theory in its scientific sense would be " Many scientists have a theory about why global warming exists." Theories are based off experiments and facts.
Most scientists believe global warming is one of the major problems facing our planet at the present time. Humans release 30 billion tons of CO2 from fossil sources each year, which is accumulating faster than it can be absorbed, and this "greenhouse" gas is driving up the planet's temperature. If we poll just climate scientists on this issue, close to 97% concur with this assessment.
As with all issues, not ALL scientists believe in the link between human activity and global warming. However, the majority of scientists feel that the evidence for global warming is adequate to prove its existence. The majority of scientists who reaffirm the theory of global warming believe there is a link between climate and human activity. According to the Union of Concerned Scientists, "The Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) states: it is a greater than a 90 percent certainty that emissions of heat-trapping gases from human activities have caused "most of the observed increase in globally averaged temperatures since the mid-20th century." "
Pragmatic people do. Also climate scientists, scientists in general, and for that matter most of the general public. Even in the US, the one industrial nation which has the lowest rate of acceptance of general scientific findings for some odd reason, about 70% are currently convinced global warming is real.
Most climate scientists agree that global warming is caused by human activities. Scientists predict many worrying consequences if global warming is not stopped. Some people don't want to do anything about global warming.
Just routine practice. Must be in their constitution or something. Hot air from scientific debate is suspected of being the main contributor to global warming.
Many scientists hypothesize that deforestation intensifies global warming trends.
Scientists as a group do not take measures to prevent global warming other than those taken by individuals.
Yes, 99% of peer-reviewed climate scientists agree that we are experiencing man-made Global Warming.
No, 97% of scientists agree the earth is warming due to human means.
Most scientists do believe in global warming. "There is broad scientific consensus", according to Scientific Organizations around the world that global warming is happening and it is being caused by humans.We burn too much fossil fuel (coal, oil and natural gas) thus releasing carbon dioxide into the greenhouse gases in the atmosphere.We are also cutting down trees and forests all over the world. Forests absorb carbon dioxide and turn it onto oxygen.
Global warming is not important.Global warming isn't happening.Global warming is happening but it's not our fault.Global warming is happening but we can't do anything about it.Scientists are not sure about global warming.
Not many. Most (97% of) climate scientists agree that the earth is warming and that humans are causing global warming by burning fossil fuels and cutting down forests.