La thèse du réchauffement
Environnement : l'Académie des sciences désavoue les climato-sceptiques - ENVIRONNEMENT
Un article de Wikipédia, l'encyclopédie libre. En 1988, l'ONU crée le Groupe intergouvernemental sur l'évolution du climat (GIEC) chargé de faire une synthèse des études scientifiques sur cette question. Dans son dernier et quatrième rapport, auquel ont participé plus de 2 500 scientifiques de 130 pays, le GIEC affirme que le réchauffement climatique depuis 1950 est très probablement[c 1] dû à l'augmentation des gaz à effet de serre d'origine anthropique. Les conclusions du GIEC ont été approuvées par plus de 40 sociétés scientifiques et académies des sciences, y compris l'ensemble des académies nationales des sciences des grands pays industrialisés.
Un article de Wikipédia, l'encyclopédie libre. Le Groupe d'experts intergouvernemental sur l'évolution du climat (GIEC) est un organisme intergouvernemental, ouvert à tous les pays membres de l'ONU. Il « a pour mission d’évaluer, sans parti-pris et de façon méthodique, claire et objective, les informations d’ordre scientifique, technique et socio-économique qui nous sont nécessaires pour mieux comprendre les risques liés au changement climatique d’origine humaine, cerner plus précisément les conséquences possibles de ce changement et envisager d’éventuelles stratégies d’adaptation et d’atténuation. Il n’a pas pour mandat d’entreprendre des travaux de recherche ni de suivre l’évolution des variables climatologiques ou d’autres paramètres pertinents.
Climate Change 2013: The Physical Science Basis The Summary for Policymakers of the Working Group I contribution to the Fifth Assessment Report was approved, and the full report accepted, by the IPCC on 27 September 2013. The finalized version of the Summary for Policymakers was published on 11 November 2013 and is available for download below. For more on how the Working Group I report was prepared click here.
After some prolonged deliberation, I have decided to withdraw from participating in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). I am withdrawing because I have come to view the part of the IPCC to which my expertise is relevant as having become politicized. In addition, when I have raised my concerns to the IPCC leadership, their response was simply to dismiss my concerns. With this open letter to the community, I wish to explain the basis for my decision and bring awareness to what I view as a problem in the IPCC process. The IPCC is a group of climate researchers from around the world that every few years summarize how climate is changing and how it may be altered in the future due to manmade global warming. I had served both as an author for the Observations chapter and a Reviewer for the 2nd Assessment Report in 1995 and the 3rd Assessment Report in 2001, primarily on the topic of tropical cyclones (hurricanes and typhoons). - Prometheus: Chris Landsea Leaves IPCC Archives
Japan’s boffins: Global warming isn’t man-made Climate science is ‘ancient astrology’, claims report By Andrew Orlowski The Register UK (h/t) from WUWT reader Ric Werme UPDATE: One of the panelists (Dr. Itoh) weighs in here at WUWT, see below. Subcomittee of Japan’s Society of Energy and Resources disses th
RealClimate Since 1998 the global temperature has risen more slowly than before. Given the many explanations for colder temperatures discussed in the media and scientific literature (La Niña, heat uptake of the oceans, arctic data gap, etc.) one could jokingly ask why no new ice age is here yet. This fails to recognize, however, that the various ingredients are small and not simply additive. Here is a small overview and attempt to explain how the different pieces of the puzzle fit together. Figure 1 The global near-surface temperatures (annual values at the top, decadal means at the bottom) in the three standard data sets HadCRUT4 (black), NOAA (orange) and NASA GISS (light blue). Graph: IPCC 2013.
We have reported on many occasions about the climate history of Antarctica, basically concluding that the frozen continent was not warming up during the most recent couple of decades, despite expectations that it should have been. At first glance, a new paper by the University of Washington’s Eric Steig and colleagues, published in last week’s Nature magazine and featured as its cover story, may seem to challenge our understanding—at least that is how it was spun to the press (see here and here, for example). But a closer look at what the paper really says—as opposed to what is said about the paper—shows that there is not much in need of changing with the current understanding of Antarctica’s temperature history. World Climate Report » Antarctica Again - Mozilla Firefox
From director Davis Guggenheim, An Inconvenient Truth is a passionate and inspirational look at former Vice President Al Gore's fervent crusade to halt global warming's deadly progress by exposing the myths and misconceptions that surround it. In this intimate portrait of Gore and his "travelling global warming show," Gore comes across as never before in the media - funny, engaging, open and intent on alerting citizens to this "planetary emergency" before it's too late. Interspersed with the bracing facts and future predictions is the story of Gore's personal journey: from an idealistic college student who first saw a massive environmental crisis looming; to a young Senator facing a harrowing family tragedy that altered his perspective; to the man who almost became President but instead returned to the most important cause of his life.
Climate This Airplane Will Fly Around The World Without Using A Drop Of Fuel Tropical Cyclone Hits Australia As ‘One Of The Most Powerful Storms’ In ‘Living Memory’