The Copenhagen Diagnosis is a climate change report written by 26 climate scientists from eight countries.[1][2] It was published in 2009 and was a summary of the peer-reviewed literature to date.[3][4] A media conference was held to present the major findings of the report at the 2009 United Nations Climate Change Conference, in Copenhagen, Denmark, chaired by the Copenhagen Diagnosis coordinating lead author, Matthew England.[5]
The Copenhagen Diagnosis aimed to synthesize the most policy-relevant climate science published since the close-off of material for the previous Intergovernmental Panel on Climate Change's Working Group 1 Report (AR4),[6][7] thus serving as an interim evaluation of the evolving science midway through an IPCC cycle, with IPCC AR5 not due for completion until 2013.[7]
The report also aimed to serve as a handbook of science updates that supplements the IPCC AR4 in time for the 2009 United Nations Climate Change Conference[6] held in December 2009, and for any national or international climate change policy negotiations that followed.
The Copenhagen Diagnosis reached a number of conclusions, as set out in the executive summary,[8] including:
Surging greenhouse gas emissions
Relative to 1990, the combined 2008 global emissions of carbon dioxide from various sources such as fossil fuel burning, cement production, and deforestation, has increased 27%.
Human-induced warming
Detection and attribution studies show that global warming can be unambiguously linked to anthropogenic interference in the climate system.
Acceleration of ice melt contributions to sea-level
Glaciers, ice sheets and melting ice caps show an accelerated rate of melt, contributing to ongoing global sea level rise.
Rapid Arctic sea-ice decline
Melting of Arctic sea-ice has also accelerated, exceeding the projections of climate models.
The recent rate of sea level rise (3.4 mm/yr over the past 15 years) is around 80% faster than previously predicted.
The risk of irreversible damage
There are several components of the climate system that may undergo irreversible change if fossil fuel emissions continue unchecked, including ice-sheets, Amazon rainforest, and the West African monsoon.
Turning point must come soon
To limited global warming to 2 degrees Celsius above pre-industrial levels, carbon emissions need to peak in the next decade and then decline rapidly.
The Future
To stop climate change and secure a safe climate future, the world needs to move to net-zero emissions of CO2.
To maximize global outreach, the major findings of the Copenhagen Diagnosis were translated into 12 languages.[9]
The Copenhagen Diagnosis has been accessed online over a million times since its release, and was named an Outstanding Academic Title by the American Library Association's Choice publication in 2012.[10]
Referencesedit
^"How the Copenhagen Diagnosis came to be written". The Copenhagen Diagnosis.
^Lee, Mike (2009-11-24). "Climate scientists offer grim 'Diagnosis'". San Diego Union-Tribune.
^Sale, Peter (2011). Our Dying Planet: An Ecologist's View of the Crisis We Face. University of California Press. p. 95. ISBN978-0-520-26756-5.
^"'Copenhagen Diagnosis' offers a grim update to the IPCC's climate science". The Guardian. London. 25 November 2009. Retrieved 6 September 2011.
^Science Media Centre (15 December 2009). "15 December update - Highlights from Copenhagen". Scoop News. Retrieved 2021-07-09.
^ ab"Copenhagen". Real Climate: Climate science from climate scientists. RealClimate.org. 24 November 2009. Retrieved 12 December 2011.
^ ab"'Copenhagen Diagnosis' offers a grim update to the IPCC's climate science". Guardian Environment Network. London: The Guardian. 25 November 2009.
copenhagen, diagnosis, climate, change, report, written, climate, scientists, from, eight, countries, published, 2009, summary, peer, reviewed, literature, date, media, conference, held, present, major, findings, report, 2009, united, nations, climate, change,. The Copenhagen Diagnosis is a climate change report written by 26 climate scientists from eight countries 1 2 It was published in 2009 and was a summary of the peer reviewed literature to date 3 4 A media conference was held to present the major findings of the report at the 2009 United Nations Climate Change Conference in Copenhagen Denmark chaired by the Copenhagen Diagnosis coordinating lead author Matthew England 5 The Copenhagen Diagnosis aimed to synthesize the most policy relevant climate science published since the close off of material for the previous Intergovernmental Panel on Climate Change s Working Group 1 Report AR4 6 7 thus serving as an interim evaluation of the evolving science midway through an IPCC cycle with IPCC AR5 not due for completion until 2013 7 The report also aimed to serve as a handbook of science updates that supplements the IPCC AR4 in time for the 2009 United Nations Climate Change Conference 6 held in December 2009 and for any national or international climate change policy negotiations that followed The Copenhagen Diagnosis reached a number of conclusions as set out in the executive summary 8 including Surging greenhouse gas emissions Relative to 1990 the combined 2008 global emissions of carbon dioxide from various sources such as fossil fuel burning cement production and deforestation has increased 27 Human induced warming Detection and attribution studies show that global warming can be unambiguously linked to anthropogenic interference in the climate system Acceleration of ice melt contributions to sea level Glaciers ice sheets and melting ice caps show an accelerated rate of melt contributing to ongoing global sea level rise Rapid Arctic sea ice decline Melting of Arctic sea ice has also accelerated exceeding the projections of climate models Underestimation of rising sea levels The recent rate of sea level rise 3 4 mm yr over the past 15 years is around 80 faster than previously predicted The risk of irreversible damage There are several components of the climate system that may undergo irreversible change if fossil fuel emissions continue unchecked including ice sheets Amazon rainforest and the West African monsoon Turning point must come soon To limited global warming to 2 degrees Celsius above pre industrial levels carbon emissions need to peak in the next decade and then decline rapidly The Future To stop climate change and secure a safe climate future the world needs to move to net zero emissions of CO2 To maximize global outreach the major findings of the Copenhagen Diagnosis were translated into 12 languages 9 The Copenhagen Diagnosis has been accessed online over a million times since its release and was named an Outstanding Academic Title by the American Library Association s Choice publication in 2012 10 References edit How the Copenhagen Diagnosis came to be written The Copenhagen Diagnosis Lee Mike 2009 11 24 Climate scientists offer grim Diagnosis San Diego Union Tribune Sale Peter 2011 Our Dying Planet An Ecologist s View of the Crisis We Face University of California Press p 95 ISBN 978 0 520 26756 5 Copenhagen Diagnosis offers a grim update to the IPCC s climate science The Guardian London 25 November 2009 Retrieved 6 September 2011 Science Media Centre 15 December 2009 15 December update Highlights from Copenhagen Scoop News Retrieved 2021 07 09 a b Copenhagen Real Climate Climate science from climate scientists RealClimate org 24 November 2009 Retrieved 12 December 2011 a b Copenhagen Diagnosis offers a grim update to the IPCC s climate science Guardian Environment Network London The Guardian 25 November 2009 The Copenhagen Diagnosis Executive Summary www copenhagendiagnosis com Retrieved 2021 07 10 The Copenhagen Diagnosis www copenhagendiagnosis com Retrieved 2021 07 09 The Copenhagen Diagnosis 1st Edition www elsevier com Retrieved 2021 07 07 External links edit Copenhagen Diagnosis Report 23 3 MB Retrieved from https en wikipedia org w index php title Copenhagen Diagnosis amp oldid 1177443562, wikipedia, wiki, book, books, library,
