Blair Trewin is the science lead for the 2011-2020 WMO State of the Climate Report. He is a member of the WMO Expert Team on Climate Monitoring and Assessment and the GCOS Atmospheric Observation Panel for Climate, and has led or contributed to numerous WMO State of the Climate reports since 2010. He is a Senior Research Scientist at the Australian Bureau of Meteorology and was a Lead Author of the IPCC Sixth Assessment Report.