What if and so what in Northwest Canada: Could climate change make a difference to the future of the Mackenzie Basin? Arctic 50(4):293
ABSTRACT. Global climate change, also known as global warming, is one of the most challenging elements of global environmental change. If atmospheric concentrations of carbon dioxide and other “greenhouse gases ” continue to increase, global mean air temperatures are expected to rise 1.5 ˚ to 4.5˚C...
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| Language: | English |
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1997
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.566.5738 http://pubs.aina.ucalgary.ca/arctic/Arctic50-4-293.pdf |
| Summary: | ABSTRACT. Global climate change, also known as global warming, is one of the most challenging elements of global environmental change. If atmospheric concentrations of carbon dioxide and other “greenhouse gases ” continue to increase, global mean air temperatures are expected to rise 1.5 ˚ to 4.5˚C within the next several decades. High-latitude regions are projected to experience above-average increases. What effects would such a warming have in the Canadian Arctic? In a recently completed study of the Mackenzie Basin in northwestern Canada, regional stakeholders provided their responses to the “what if? ” scenario of climate change in their region. This scenario includes more frequent landslides due to permafrost thaw, lower minimum annual river and lake levels, more forest fires, and lower yield from softwoods. These impacts could offset potential benefits from a longer growing and ice-free season. Regional stakeholders, including provincial and territorial governments, aboriginal organizations, and the private sector, felt confident about their abilities to adapt, so long as climate change would be predictable and gradual. Some potential impacts, however, could be very significant for renewable resources and aboriginal communities, and some stakeholders spoke of intervention into national and international policy arenas to raise awareness outside of the Mackenzie Basin. Key words: climate change, Mackenzie Basin, climate impacts, integrated assessment, stakeholders RÉSUMÉ. Le changement climatique mondial, qu’on appelle aussi «réchauffement de la planète», est l’un des aspects du changement de l’environnement planétaire qui présente le plus de défis. Si les concentrations atmosphériques en gaz carbonique et autres «gaz à effet de serre » continuent d’augmenter, les températures moyennes globales de l’air devraient s’élever de 1,5 à 4,5˚C au cours des prochaines décennies. Quelles seront les répercussions d’un tel réchauffement sur l’Arctique canadien? Dans |
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