The 4 Degrees and Beyond International Climate Conference , Implications of a Global Climate Change of 4+ Degrees for People, Ecosystems and the Earth-system , was held 28-30 September 2009 at Oxford , United Kingdom.  The three-day conference had about 140 science, government, NGO and private sector delegates, and included 35 oral presentations and 18 poster presentations. The conference website includes a page for downloading abstracts, presentations, audio recordings, and the program.  Links to a number of news stories are also provided.  The conference was sponsored by the University of Oxford , theTyndall Center for Climate Change Research, and the Met Office Hadley Center .
Video podcasts of all oral presentations are posted on a University of Oxford website;  however, to find videos by presenter names.
In January 2011, eleven papers and three introductory papers resulting from the conference were published as a special issue of the Philosophical Transactions of the Royal Society , Four Degrees and Beyond: The Potential for a Global Temperature Increase of Four Degrees and Its Implications .   Many of the papers are free downloads. The contents of the special issue are listed later in this article.
In July 2011, a follow-up conference, Four Degrees Or More? Australia in a Hot World , was held at the University of Melbourne , Australia.
Rationale for the Conference
- “Despite 17 years of negotiations since the 1992 Rio Earth Summit, the global greenhouse gas emissions have continued to increase.” challenge: either instigate an immediate and radical reversal in a situation where we accept global temperature rises well beyond 4 °. “
- 4 ° C, and indeed the human and ecosystem implications of living with 4 ° C, are beyond the understanding of the implications of 4 ° C and higher The effects of climate change are highly sensitive to the effects of climate change.
- “The aim of this conference is therefore to: (i) assess the consequences of a change in global temperature above 4 ° C for a range of systems and sectors, and (ii) explore the options that are open for The results of the conference will be an important background to the COP in Copenhagen, December 2009, and the inevitable negotiations that will follow COP 15. ” 
- “1. Invited keynote talks that:”
- at. provide an assessment of the impacts of climate change for a range of human, ecological and earth systems.
- b. the avoidance of the risk of harm to the environment and the risk of climate change.
- 2. “Open call for oral and poster papers in the above themes, with a focus on regional examples that complement keynote topics.” 
2011 Follow up event: “Four Degrees Or More? Australia in a Hot World”
A related, second large conference, Four Degrees Or More? Australia in a Hot World was held on July 12-14, 2011 at the University of Melbourne , Australia.   The conference:
- “… the international community has global warming to the limits of global warming. Celsius above pre-industrial levels, and so on, if the united nations collectively, result in average warming of 4 degrees or more. 
As with the earlier conference, multimedia and pdf files of the presentations and keynote addresses are posted on the conference website. 
The conference was organized by Dr. Peter Christoff. Teacher. John Schellnhuber , Potsdam Inst. for Climate Impact research (PIK) was again a keynote speaker, along with Prof. Ross Garnaut .  The event was disrupted by anti-environmental protesters. [ quote needed ]
Presenters:  Dr. Karl Braganza, Prof. Jon Barnett, Assoc. Teacher. Peter Christoff, Prof. Robyn Eckersley , Prof. Ross Garnaut, Prof. David Griggs, Andrew Hewett, Prof. Ove Hoegh-Guldberg , Dr. Mark Howden, Prof. Lesley Hughes, Prof. David Karoly , Prof. Jan Mcdonald, Assoc. Teacher. Phil Mcmanus, Prof. Tony McMichael , Prof. Malta Meinshausen, Prof. Jean Palutikof , Prof. Hans Joachim Schellnhuber, Anna Skarbek, Prof. Will Steffen , And Dr. Penny Whetton .
- Climate change in the United Kingdom
- ^ Jump up to:a b c 4 Degrees and Beyond International Climate Conference,Implications of a Global Climate Change of 4+ Degrees for People, Ecosystems and the Earth-system , University of Oxford , 28-29 Sept. 2009.
- Jump up^ Official Conference website Program, abstracts, presentations, and audio recordings. Archived 2010-01-10 at the Wayback Machine .
- Jump up^ Linked list of news stories.
- Jump up^ Presentation videos
- Jump up^ New, M .; et al. (2011) Four degrees and beyond: the potential for a global temperature increase of four degrees and its implications 369: 1934.
- Jump up^ US News & World Report. 2010, Dec. 3, by Janet Raloff. World Could Heat Up 4 Degrees C in 50 Years: Immediate action needed to hold warming to half that
- Jump up^ Conference homepage: Four Degrees or More? Australia in a Hot World
- Jump up^ Hudson M (2011). Facing the heat. Nature Clim. Exchange. 1: 6, 282-284. Sept. 2011.
- Jump up^ About the Conference webpage.
- Jump up^ Presentations from: Four Degrees or More? Australia in a Hot World
- Jump up^ Program for Four Degrees or More? Australia in a Hot World
- Jump up^ List of speakers, Including Their qualifications. Four Degrees or More?Australia in a Hot World conference website.