Box 61 Mapping the chapters in ACIAs scientific report

To get an overview over differences in how frequently different selected words were used in the chapters of ACIA's scientific report, a principal component analysis was used to generate a two-dimensional map. It is based on the following words: global, regional, local, community, people, indigenous, political, temperature, precipitation, ice, snow, permafrost, ecosystem, species, marine, terrestrial, freshwater, atmosphere, physical, chemical, economic, social, biology, cultural, impact, adaptation, vulnerability, sustainable, conservation, management, resource(s), ultraviolet or UV, biodiversity, carbon, model, scenario, monitoring, observation(s) case study(ies), and IPCC. The frequency by which they are mentioned in each chapter has been corrected for the size of the chapter. The analysis was carried out by the categorical principal component analysis in the SPSS statistical package, using a numeric scale and grouping the variables to achieve a normal distribution, making the procedure analogous to a standard principal component analysis. Numbers in the graph refer to chapter numbers in the ACIA scientific report, see list on the following page. The first dimension (x-axis) accounts for 28.5 percent of the variance, and the second dimension (y-axis) accounts for another 15.8 percent.

ACIA chapter 1-18, selected words



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1. An Introduction to the Arctic Climate Impact Assessment

2. Arctic Climate: Past and Present

3. The Changing Arctic: Indigenous Perspectives

4. Future Climate Change: Modeling and Scenarios for the Arctic

5. Ozone and Ultraviolet Radiation

6. Cryosphere and Hydrology

7. Arctic Tundra and Polar Desert Ecosystems

8. Freshwater Ecosystems and Fisheries

9. Marine Systems

10. Principles of Conserving the Arctic's Biodiversity

11. Management and Conservation of Wildlife in a Changing Arctic Environment

12. Hunting, Herding, Fishing, and Gathering:

Indigenous Peoples and Renewable Resource Use in the Arctic

13. Fisheries and Aquaculture

14. Forests, Land Management, and Agriculture

15. Human Health

16. Infrastructure: Buildings, Support Systems, and Industrial Facilities

17. Climate Change in the Context of Multiple Stressors and Resilience

18. Summary and Synthesis of the ACIA

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