Working Group I Contribution to the IPCC Fifth Assessment Report Climate Change 2013: The Physical Science Basis: SPM Jose A. Marengo RE, Chapter 2 WGI.

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Presentation transcript:

Working Group I Contribution to the IPCC Fifth Assessment Report Climate Change 2013: The Physical Science Basis: SPM Jose A. Marengo RE, Chapter 2 WGI jose.marengo@inpe.br

(IPCC 2013, Fig. SPM.1a)

Annual mean Arctic summer sea ice start of satellite data (IPCC 2013, Fig. SPM.2) Annual mean Arctic summer sea ice extent decreased very likely with a rate of 3.5-4.1% per decade in 1979 – 2012 decrease was most rapid in summer (high confidence). Data normalized to the satellite measured sea ice extent in 1979

(IPCC 2013, Fig. SPM.Table.1)

(IPCC 2013, Fig. SPM.10)