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Global warming and sea level rise: Public discourse vs. the science of climate change Dr Harun Rashid Emeritus Professor Department of Geography and Earth Science University of Wisconsin— La Crosse, WI, USA
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OBJECTIVES 1. To study newspaper roles in public discourse on global warming, climate change, and sea level rise 2. To review the coverage of Sustainability, Adaptation, and Mitigation (SAM) initiatives in newspaper discourse on ameliorative policies 3. To assess the nature and extent of media amplification of global warming and climate change in newspaper reports
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RESEARCH METHODS Electronic resources: ProQuest and EBSCOHost Newspapers analyzed: 14 (6 US, 2 Canadian, 3 Australian, 1 NZ, 1 UK, 1 India) Reports analyzed: 40 (target: 200) Discourse analysis: Microsoft WORD count Total numbers of words analyzed: 30,000
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Nature of discourseCoverage by all newspapers (Percent of the total text) Scientific elements18 Physical impacts11 Socioeconomic impacts13 Mitigation policies41 Public and media amplification17 Likert-scale rating of amplification1.39 S UMMARY OF D ISCOURSE A NALYSIS : Global warming and climate change
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SCIENTIFIC ELEMENTS : Temperature trend lines
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SCIENTIFIC ELEMENTS: IPCC data on temperature anomaly
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SCIENTIFIC ELEMENTS: Increasing anthropogenic greenhouse gases
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SCIENTIFIC ELEMENTS: Natural vs. anthropogenic greenhouse effect Astronomical factors Natural greenhouse gases: Water vapour Carbon dioxide Methane Anthropogenic greenhouse gases: Carbon dioxide Methane nitrous oxide CFCs Ozone (Ground level )
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SCIENTIFIC ELEMENTS: Sunspot activities
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SCIENTIFIC ELEMENTS: Solar flares
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SCIENTIFIC ELEMENTS: Computer simulations
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SCIENTIFIC ELEMENTS: Carbon dioxide pollution
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SCIENTIFIC ELEMENTS: Polluting countries
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PHYSICAL IMPACTS: Forest fire in the US West
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PHYSICAL IMPACTS: Forest fire in the Okanagan Valley
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PHYSICAL IMPACTS: Drought in Kenya
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PHYSICAL IMPACTS: Floating icebergs
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PHYSICAL IMPACTS: Collapsing Antarctic Ice Shelves
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MITIGATION: Emission reductions
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MITIGATION: Carbon sequestration
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MITIGATION: Iron fertilization
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MITIGATION: Iron fertilization sites
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MITIGATION: Algal bloom due to iron fertilization
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MITIGATION: Geo-engineering in the stratosphere
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S UMMARY OF D ISCOURSE A NALYSIS : Impact of global warming on sea-level rise Nature of discourseCoverage by all newspapers (Percent of the total text) Scientific elements14 Physical impacts15 Social impacts8 Mitigation policies40 Media amplification23 Amplification: Likert Scale Rating2.58
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SCIENTIFIC ELEMENTS: Recent sea level rise
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IPCC FIRST ASSESSMENT (1990): Sea level rise by 2100: Conservative estimate: 1 m rise (+3 C) Extreme scenario: 3 m rise (+5.5 C) IPCC 4 th ASSESSMENT (2007): Sea level rise by 2100: Conservative estimates: 0.18 to 0.59 m rise Thermal expansion contributes 75% of sea level rise
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PHYSICAL IMPACTS: Impacts of sea-level rise in Bangladesh IPCC estimate (UNEP Map): Nightmare scenario for Bangladesh: 15 million people displaced from 17,000 km 2 Sea level rise accelerated by land subsidence
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PHYSICAL IMPACTS: Accelerated river-bank erosion in Bangladesh
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PHYSICAL IMPACTS: Coastal erosion in Florida
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PHYSICAL IMPACTS: Tuvalu Island being threatened by rising sea level
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PHYSICAL IMPACTS: Tuvalu highway inundated by breaking waves
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PHYSICAL IMPACTS: Male, capital of the Maldives at risk
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MITIGATION: Coastal polders and forest expansion in Bangladesh
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MITIGATION: Delta sedimentation
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MITIGATION: Elevated foundations of homes
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MITIGATION: Resettlement of climate refugees in Tuvalu
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MITIGATION: Resettlement of climate refugees in Bangladesh
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MITIGATION: Resettlement of displaced population from river-bank erosion in Bangladesh
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CONCLUSION: THE WAY AHEAD Newspaper discourse on science communication Sustainable mitigation measures: SAM initiatives Adaptive management
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