The challenge of climate change

Working Group I (WGI) assesses the physical science of climate change.

How has our climate already changed because of anthropogenic activities, and how will future emissions of greenhouse gases and aerosols further change the climate system? 

Drawing on the evidences from physical science, this session explored certainty and uncertainty in climate change.

This session took place between 11.00 - 12.45 on Thursday 15 May.

Contributors:

Professor Stephen Belcher (session chair)

Head of the Met Office Hadley Centre

As Head of the Met Office Hadley Centre, I lead the Climate Science directorate, providing scientific direction to its 6 areas; Earth System Science; Climate impacts; Climate Monitoring; Cryosphere and Oceans; Seasonal to decadal and Understanding Climate. Together these areas provide the science and model developments key to understanding climate variability and projecting future change and its impacts.

I also manage the delivery of climate science research under the Met Office Hadley Centre Climate Programme, funded by DECC and Defra.

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Professor Thomas Stocker (keynote speaker)

Co-Chair of Working Group I of the IPCC

I am Professor of Climate and Environmental Physics at the University of Bern. My research focuses on using climate models of intermediate complexity to understand past and project future changes in the Earth System.

I was Coordinating Lead Author in the 3rd and 4th Assessment Reports of the UN Intergovernmental Panel on Climate Change (IPCC); and since 2008 I have been serving as the Co-Chair of Working Group I, The Physical Science Basis.

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Professor Mat Collins

Joint Met Office Chair in Climate Change, Met Office and University of Exeter

I was Coordinating Lead Author for Working Group I, Chapter 12: Long Term Climate Change: Projections, Commitments and Irreversibility.

I am a Joint Met Office Chair in Climate Change at the University of Exeter, and I have research interests in climate modelling, climate projections and natural climate variability with a focus on physical understanding.

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Professor Corinne LeQuéré

Professor of Climate Science and Policy, University of East Anglia

I am Professor of Climate Change Science and Policy at the University of East Anglia and Director of the Tyndall Centre for Climate Change Research. My research focuses on the interactions between climate change and the carbon cycle. 

I was Lead Author of the third, fourth and fifth IPCC Assessment Reports. I co-direct the annual publication of Global Carbon Budgets by the Global Carbon Project, and I am a member of the Future Earth science committee.

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Dr Peter Stott

Scientific Strategic Head for Climate Monitoring and Attribution, Met Office

I lead the Climate Monitoring and Attribution team at the Met Office Hadley Centre. I was the Coordinating Lead Author in AR5 WGI chapter 10: Detection and attribution of climate change: from global to regional.

One of the most important challenges for climate research is to seek to understand how anthropogenic climate change and natural climate variability is affecting weather related risks from damaging impacts such as flooding, heatwaves, and storm surges.

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