Quantitative text analysis tools have become increasingly popular methods for the operationalization of various types of discourse analysis. However, their application usually remains fairly simple and superficial, and fails to exploit the resources which the digital era holds for discourse analysis to their full extent. This paper discusses the discourse-analytic potential of a more complex and advanced text analysis tool, which is already frequently employed in other approaches to textual analysis, notably topic modelling. We argue that topic modelling promises advances in areas where discourse analysis has traditionally struggled, such as scaling, repetition, and systematization, which go beyond the contributions of simpler frequency and collocation counts. At the same time, it does not violate the epistemological premises and methodological ethos of even the more radical theories of discourse, we will demonstrate. Finally, we present two small case studies to show how topic modellingwhen used with appropriate parameterscan straightforwardly enhance our ability to systematically investigate and interpret discourses in large collections of text.
Extending Ulrich Beck's theory of world risk society, this article traces the emergence of a cosmopolitan risk community of world port cities in Europe and East Asia, constituted around shared imaginations of the global risks and opportunities of climate change. Such urban risk imaginations are shaped and circulated, we argue, within transnational assemblages of local government networks, international organizations, multinational insurance companies and transnational non-governmental organizations. Adopting the methodology of mapping urban climate experiments, we then document one policy indication of this cosmopolitan risk community, in terms of the timing, intensity, priorities and modes of government manifested in the climate policy engagements of 16 major world port cities across the regions of Europe and East Asia. The substantial similarities in such policy engagements, we conclude, amount to a new urban-cosmopolitan realism, reshaping urban politics in the face of climate change.
Individual action and support for policy to tackle climate change have been linked to perceptions of political and scientific controversy and consensus concerning the issue. Recent media effects research indicates that presentation of agreement or conflict between actors' opinions influences how audiences respond to news about climate change and policy. While some national case studies have investigated portrayals of actors' positions on important questions regarding climate change in the media, they are largely absent from comparative research. This study addresses this gap by analysing portrayals of actor-issue-positions and the emerging patterns of controversy and consensus in German, Canadian, and US coverage. Studying a sample of occurrences of climate change-related issues (N = 902) in-depth, the results show German media present political consensus about the need to limit emissions and societal controversy about the efficacy of specific mitigation measures. Presenting mainly consensus, Canadian media report more on climate change's impact, leaving aside the issue of efficacy. In the US, media emphasise political controversyabout the need to limit emissions and occasionally about climate change's impact on humans. The findings, consistent with other recent publications, can best be explained by journalists selectively indexing of seemingly relevant actor-issue-positions.
Perceptions of climate politics often align with individual political leaning and associated media consumption patterns, pointing to a need for a finegrained understanding of how the media integrate climate change with political identities. This study presents an in-depth qualitative analysis of political identity portrayals from 229 articles published in six German and US news outlets during May-July 2019. The results show that the outlets consumed by left-and right-leaning audiences emphasise oppositional identity portrayals, portraying features that are likely to trigger a negative response towards political identities typically opposed by their recipients. The outlets with a more balanced or centrist audience offer a wider array of identity portrayals and emphasise policy questions over fundamental beliefs. Observed patterns differ considerably between Germany and the US, reflecting political and media system differences. The results add to understanding how the media contribute to political polarisation and consensus-building regarding climate change.
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