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2007 Bali Climate Declaration by Scientists


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This consensus document was prepared under the auspices of the Climate Change Research Centre at the University of New South Wales in Sydney, Australia.

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The 2007 IPCC report, compiled by several hundred climate scientists, has unequivocally concluded that our climate is warming rapidly, and that we are now at least 90% certain that this is mostly due to human activities. The amount of carbon dioxide in our atmosphere now far exceeds the natural range of the past 650,000 years, and it is rising very quickly due to human activity. If this trend is not halted soon, many millions of people will be at risk from extreme events such as heat waves, drought, floods and storms, our coasts and cities will be threatened by rising sea levels, and many ecosystems, plants and animal species will be in serious danger of extinction.

The next round of focused negotiations for a new global climate treaty (within the 1992 UNFCCC process) needs to begin in December 2007 and be completed by 2009. The prime goal of this new regime must be to limit global warming to no more than 2 ºC above the pre-industrial temperature, a limit that has already been formally adopted by the European Union and a number of other countries.

Based on current scientific understanding, this requires that global greenhouse gas emissions need to be reduced by at least 50% below their 1990 levels by the year 2050. In the long run, greenhouse gas concentrations need to be stabilised at a level well below 450 ppm (parts per million; measured in CO2-equivalent concentration). In order to stay below 2 ºC, global emissions must peak and decline in the next 10 to 15 years, so there is no time to lose.

As scientists, we urge the negotiators to reach an agreement that takes these targets as a minimum requirement for a fair and effective global climate agreement.

The 2007 Bali Climate Declaration has been signed by the following scientists:

Name Title Country

Richard Allan Dr United Kingdom

Richard Anthes Dr USA

Waleed Abdalati Head, Cryospheric Sciences Branch USA

Becky Alexander Assistant Professor USA

Ian Allison Dr Australia

Caspar Ammann Research Scientist USA

Leif Anderson Professor Sweden

Jean-Claude Andre Dr France

Natalie Andronova Research Scientist USA

David Archer Professor University of Chicago USA

Mike Archer Professor. Dean of Science Australia

Vincenzo Artale Senior Research Scientist Italy

Paulo Artaxo Professor Brazil

Karen Assmann Dr Norway

Dorothee Bakker Dr United Kingdom

Edouard Bard Professor College de France France

Tim Barnett Research Marine Physicist USA

J. Ray Bates Professor Ireland

Richard Bellerby Dr Norway

Rasmus E. Benestad Dr Norway

Terje Berntsen Senior Scientist Norway

Nathan Bindoff Professor Physical Oceanography Australia

Robert Bindschadler Chief Scientist, Hydrospheric/Biospheric Laboratory USA

Roxana Bojariu Head, Climate Research Group Romania

Sandrine Bony Research Scientist France

Laurent Bopp Dr France

Alberto Borges Dr Belgium

Philippe Bousquet Assistant Professor France

Pascale Braconnot Dr France

Raymond S. Bradley Professor. Director. Climate System Research Center USA

Guy Brasseur Senior Scientist USA

Francois-Marie Breon Professor France

Christopher Bretherton Director. Program on Climate Change USA

Victor Brovkin Dr Germany

Erik Buitenhuis Dr United Kingdom

Pep Canadell Executive Director Global Carbon Project Australia

Mark Cane Professor USA

Carlo Carraro Professor Italy

Anny Cazenave Senior Scientist France

Marie-Lise Chanin Director of Research Emeritus France

Sylvie Charbit Dr France

Robert J. Charlson Professor USA

John Church Chief Research Scientist Australia

Garry Clarke Emeritus Professor of Geophysics Canada

Martin Claussen Professor. Director. Max Planck Inst. Germany

William D. Collins Professor and Senior Scientist USA

Paul Crutzen Professor Germany/USA

Kurt M. Cuffey Professor USA

Valerie Daux Dr France

Anthony Del Genio Physical Scientist USA

Kenneth Denman Senior Scientist Canada

Robert E. Dickinson Professor USA

Paul Dirmeyer Research Scientist USA

Helge Drange Professor Norway

Kerry Emanuel Professor USA

Matthew England Professor and ARC Federation Fellow Australia

Ian Enting Professor Australia

Jean-Louis Fellous Earth observation satellite expert France

Jonathan Fink Director. Global Institute of Sustainability USA

Andreas Fischlin Director Terrestrial Systems Ecology. ETH Zurich Switzerland

Jacqueline Flückiger Research Scientist Switzerland

Chris E. Forest Research Scientist USA

Piers Forster Reader in Climate Change Physics UK

Joos Fortunat Professor Switzerland

Roger Francey Senior Scientist Australia

Helen Amanda Fricker Associate Research Geophysicist USA

Pierre Friedlingstein Dr France

Andrew D. Friend Dr United Kingdom

Qiang Fu Professor USA

Andrey Ganopolski Scientist Germany

Catherine Gautier Professor USA

Alexander Gershunov Research Climatologist USA

Sarah Gille Associate Professor USA

Nathan Gillet Dr UK

Valerie Gros Dr France

Nicolas Gruber Professor Switzerland

Hoshin Gupta Professor USA

Kimio Hanawa Professor Japan

Bogi Hansen Professor Faroe Islands

Mohamed H.A. Hassan Professor Italy

Klaus Hasselmann Prof. Emeritus Germany

Gerald Haug Professor Switzerland

Didier Hauglustaine Directeur de Recherche CNRS France

A. D. J. Haymet Professor USA

Gabriele Hegerl Dr and Reader Geosciences UK,USA

Martin Heimann Professor. Director. Max-Planck-Inst. Germany

Christoph Heinze Professor in Chemical Oceanography Norway

Ann Henderson-Sellers Professor Australia

Jens Hesselbjerg Christensen Head of Climate Research Programme Denmark

Bruce Hewitson Professor South Africa

Kip Hodges Director. School of Earth & Space Exploration United States

Georg Hoffman Dr France

Marika Holland Scientist USA

David M Holland Professor USA

Elisabeth A. Holland Senior Scientist, National Centre for Atmospheric Research USA

Greg Holland Senior Scientist Severe Weather Research and Applications USA

Lesley Hughes Professor Australia

James W. Hurrell Senior Scientist USA

Stan Jacobs Senior Research Scientist USA

Eystein Jansen Professor. Director Norway

Truls Johannessen Professor of Chemical Oceanography Norway

Ian Joughin Senior Engineer USA

Masa Kageyama Dr France

Robert Kandel Emeritus Senior Scientist France

Georg Kaser Professor Austria

Ralph Keeling Professor of Geochemistry USA

Robert M. Key Research Oceanographer United States

Jeffrey Kiehl Senior Scientist USA

Miko Kirschbaum Senior Scientist New Zealand

Christine Klaas Dr Germany

Albert Klein Tank Dr Netherlands

Reto Knutti Professor Switzerland

Rupa Kumar Kolli Dr India

René Laprise Professor. Director ESCER Centre Canada

Corinne Le Quere Professor United Kingdom

Herve Le Treut Director. Laboratoire de Meteorologie Dynamique France

Peter Lemke Professor Germany

Conway Leovy Professor Emeritus USA

Sydney Levitus Director. World Data Center for Oceanography USA

Ulrike Lohmann Professor Switzerland

Diana Liverman Professor United Kingdom

Dan Lubin Research Physicist USA

Joachim Luther Professor Germany

Amanda H. Lynch Professor and ARC Federation Fellow Australia

Jose Antonio Marengo Senior Scientist Brazil

Jochem Marotzke Professor. Director. Max Planck Inst. Germany

Valerie Masson-Delmotte Dr France

Ben Matthews Dr Belgium

Cecilie Mauritzen Senior Scientist Norway

Bryant McAvaney Senior Principal Research Scientist Australia

James J. McCarthy Professor of Oceanography USA

Jeffrey J. McDonnell Professor and Richardson Chair in Watershed Science USA

Trevor J. McDougall Dr Australia

Tony McMichael Professor Australia

Ben McNeil Queen Elizabeth II Research Fellow Australia

Nicolas Metzl Dr France

Elisabeth Michel Dr France

Guy Midgley Dr South Africa

Arthur J. Miller Research Oceanographer USA

Gunnar Myhre Senior Scientist Norway

Neville Nicholls Professor Australia

Richard D. Norris Professor and Curator, SIO Geological Collections USA

Daniel Olago Dr. Senior Lecturer University of Nairobi Kenya

Michael Oppenheimer Professor USA

Bette Otto-Bliesner Senior Scientist USA

Jonathon Overpeck Director Institute for the Study of Planet Earth USA

Didier Paillard Dr France

Wm. Richard Peltier University Professor of Physics Canada

Andy Pitman Professor Australia

Serge Planton Senior Scientist France

Gian-Kasper Plattner Dr Switzerland

Jan Polcher Directeur de Recherche du CNRS France

Michael J. Prather Fred Kavli Professor USA

Stefan Rahmstorf Professor of Physics of the Oceans Germany

Philip Rasch Senior Scientist USA

Michael Raupach Dr Australia

Chris Reason Professor. Oceanography South Africa

James Renwick Science Leader, Climate Variability & Change New Zealand

Ulf Riebesell Professor Germany

Stephen R. Rintoul Dr Australia

Johan Rockström Associate Professor Sweden

Terry L. Root University Faculty, Senior Fellow USA

Lynn M. Russell Professor of Atmospheric Chemistry USA

Toshiro Saino Professor Japan

Christoph Schär Professor in Atmospheric Sciences, ETH Zurich Switzerland

John Schellnhuber Professor Germany

Gavin Schmidt Research Scientist, NASA GISS USA

Stephen H. Schneider Professor USA

Birgit Schneider Dr France

Michael Schulz Senior Scientist France

Richard Seager Senior Research Scientist USA

Jeffrey P. Severinghaus Professor of Geosciences USA

Drew Shindell Senior Scientist and Lecturer USA

W James Shuttleworth Professor. Director NSF SAHRA Center USA

Murugesu Sivapalan Professor USA

John P. Smol Professor Canada

Olga Solomina Dr Russia

Richard Somerville Professor USA

Will Steffen Professor Australia

Thomas Stocker Professor Switzerland

Kristof Sturm Associate Professor Sweden

John Sulston Dr United Kingdom

Didier Swingedouw Dr France

Lynne D. Talley Professor USA

Karl E. Taylor Dr USA

Fichefet Thierry Professor Belgium

Helmuth Thomas Associate Professor. Canada Reseach Chair Canada

Jerry Tjiputra Dr Indonesia

Kevin Trenberth Dr. Head, Climate Analysis Section USA

Peter A. Troch Professor USA

Carol Turley Dr United Kingdom

A.S Unnikrishnan Senior Scientist India

Francisco P. J. Valero Director Atmospheric Research Laboratory USA

Rob Van Dorland Dr The Netherlands

Ricardo Villalba Director IANIGLA Argentina

Martin Visbeck Professor Germany

Andrea Volbers Dr Norway

Thorsten Wagener Assistant Professor USA

John Wahr Professor USA

Warren M. Washington Senior Scientist USA

Bob Wasson Professor Australia

Andrew Watson Professor United Kingdom

Ian G. Watterson Dr Australia

Andrew Weaver Professor Canada

Peter J. Webster Professor USA

Ray F. Weiss Professor USA

James W.C. White Professor USA

Jürgen Willebrand Professor Emeritus Germany

Larry Winter Deputy Director NCAR USA

Carl Wunsch Professor of Physical Oceanography USA

Xubin Zeng Professor USA

Guang J. Zhang Research Meteorologist USA

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CRICOS Provider Code 00098G - Authorised by Michael Archer, Dean, Faculty of Science | Last updated 31st August 2007

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