Last updated on: 6/10/2010 | Author:

Intergovernmental Panel on Climate Change (IPCC) Biography

Pro to the question "Is Human Activity Primarily Responsible for Global Climate Change?"

“Global atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values determined from ice cores spanning many thousands of years. The global increases in carbon dioxide concentration are due primarily to fossil fuel use and land use change, while those of methane and nitrous oxide are primarily due to agriculture…

The global atmospheric concentration of carbon dioxide has increased from a pre-industrial value of about 280 ppm to 379 ppm in 2005. The atmospheric concentration of carbon dioxide in 2005 exceeds by far the natural range over the last 650,000 years (180 to 300 ppm) as determined from ice cores…

Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level…

Most of the observed increase in global average temperatures since the mid-20th century is very likely [90% probability] due to the observed increase in anthropogenic greenhouse gas concentrations.”

“Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change,”, Nov. 2007


“The IPCC is a scientific intergovernmental body set up by the World Meteorological Organization (WMO) and by the United Nations Environment Programme (UNEP). Its constituency is made of:

  • The governments: the IPCC is open to all member countries of WMO and UNEP. Governments of participate in plenary Sessions of the IPCC where main decisions about the IPCC workprogramme are taken and reports are accepted, adopted and approved. They also participate the review of IPCC Reports.
  • The scientists: hundreds of scientists all over the world contribute to the work of the IPCC as authors, contributors and reviewers.
  • The people: as United Nations body, the IPCC work aims at the promotion of the United Nations human development goals.”
  • “About IPCC,” (accessed June 17, 2010)


    “The IPCC was established to provide the decision-makers and others interested in climate change with an objective source of information about climate change. The IPCC does not conduct any research nor does it monitor climate related data or parameters. Its role is to assess on a comprehensive, objective, open and transparent basis the latest scientific, technical and socio-economic literature produced worldwide relevant to the understanding of the risk of human-induced climate change, its observed and projected impacts and options for adaptation and mitigation. IPCC reports should be neutral with respect to policy, although they need to deal objectively with policy relevant scientific, technical and socio economic factors. They should be of high scientific and technical standards, and aim to reflect a range of views, expertise and wide geographical coverage.”

    “About IPCC,” (accessed June 17, 2010)

    Scientific intergovernmental body
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    Pro & Con Quotes: Is Human Activity Primarily Responsible for Global Climate Change?