The fifth tolling of the IPCC bell
The Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) will begin to be released this week. Between 2013 September and 2014 November, what is now widely referred to as the ‘AR5’ (the fifth assessment report) will be released in stages as the three working groups present their completed work and finally when the overall synthesis report is delivered. AR5 will be the most comprehensive assessment of scientific knowledge on climate change since 2007 when Fourth Assessment Report (AR4) was released.
From around early August, the popular media has begun – in a typically lethargic and lazy manner, choosing to look for controversy rather than the very clear IPCC warnings – to report on the series of releases that will be AR5. But despite the strenuous efforts of the oil and gas industry PR firms, of the automobile industry lobbyists, of the carpetbaggers for the financiers and the banks that have propped up for decades the whole damned mess, even so, the messages have come out and together they are stark and strong.
Extreme weather events, including heatwaves and storms, have increased in many regions while ice sheets are dwindling at an alarming rate. In addition, sea levels are rising while the oceans are being acidified. From climate change experts to spokespersons of small island states, governments have been told bluntly to end their dithering about fossil fuels and start working to create a global low-carbon economy to curtail global warming.
What it all coalesces into we will begin to see this week. Consult the handy factsheet for WG I that explains how much drafting and reviewing the first release has emerged from. And here is the time-table for the AR5:
Working Group I assesses the physical science basis of the climate system and natural and anthropogenic climate change (release 2013 September 23-27 in Stockholm, Sweden). [You will find all material for this release at the website devoted to this group’s work.]
Working Group II assesses the vulnerability of socio-economic and natural systems to climate change, negative and positive impacts of climate change, and options for adapting to it (release 2014 March 25-31 in Yokohama, Japan).
Working Group III assesses options for mitigating climate change through limiting or preventing greenhouse gas emissions and enhancing activities that remove them from the atmosphere (release 2014 April 07-12 in Berlin, Germany).
The Synthesis Report will integrate material contained within IPCC Assessment Reports and Special Reports, based exclusively on material contained in the three Working Group Reports and Special Reports produced during the 5th or previous Assessment Cycles, and will be written in a non-technical style suitable for policymakers and address a broad range of question relevant to policy (release 2014 October 27-31 in Copenhagen, Denmark).
[You’ll find more on the websites of the IPCC’s three working groups – Working Group I: The Science of Climate Change; Working Group II: Impacts, Adaptation and Vulnerability; Working Group III: Mitigation of Climate Change – and the Task Force on Greenhouse Gas Inventories. See the chapter contents of the World Group I report here.]
These details have been missed by the press, some of whom are still spreading the canard that climate change science is beset by uncertainty (it is not, dear biased editor of the Los Angeles Times), or that the IPCC will try “to explain a hiatus in the pace of global warming this century” (look at the charts and read the graphs, Reuters), or that a “global warming pause is central to IPCC climate report” (tell me, BBC, where is the real centre of 14 dense chapters?), or that “the findings muddy the picture about how much carbon dioxide output is affecting the climate” (why, Bloomberg Businessweek, is the truth of climate data so difficult to digest for a news group used to copious amounts of finance data?).
Beyond and above the efforts of the mainstream press and media to play down the stark and clear warning that demands immediate action, the AR5 will place greater emphasis on assessing the socio-economic aspects of climate change and its implications for sustainable development. New features to look for in the AR5 will include: a new set of scenarios for analysis across Working Group contributions; dedicated chapters on sea level change, carbon cycle and climate phenomena such as monsoon and El Niño; much greater regional detail on climate change impacts, adaptation and mitigation interactions; inter- and intra-regional impacts; and a multi-sector synthesis.