Les montagnes donnent autant lieu à des torrents qu’à de petits ruissellements d’eau douce. Des glaciers et des manteaux neigeux alpins qui fondent, des courants dégringolent parmi les montagnes et se dispersent dans les bassins versants.
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High-elevation headwaters are the lifeblood for people and ecosystems alike. They provide the freshwater that pours through taps, supports the growth of food, and nurtures a diversity of freshwater species, including the iconic Kokanee Salmon.
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La poussière se compose de fines particules atmosphériques (de matières particulaires en suspension dans l’atmosphère) qui proviennent de sources variées telles que le sol perturbé par le vent, les éruptions volcaniques, et la pollution.
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Dust consists of fine atmospheric particulates (particles in the atmosphere) that come from various sources including soil disturbed by wind, volcanic eruptions, and pollution. This airborne dust is considered an aerosol, and once in the atmosphere, it can change the scattering and absorption of incoming solar radiation and affect local meteorology by altering cloud properties.
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En cette époque où les messages sur le développement durable sont en concurrence et souvent confus, il peut être difficile de se faire entendre. Aussi comment développer au mieux un programme éducatif sur la durabilité des montagnes?
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In times of competing and often confusing messaging about sustainability, it can be difficult to be heard. So how best to develop an education program on the subject of mountain sustainability?
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Au Canada, on se souviendra de cette année — 2023 — comme d’une année de climats extrêmes et mortels. Les incendies de forêt et la fumée, les inondations, la sécheresse, les températures extrêmes, les tornades et le réchauffement des océans ont affecté toutes les régions du pays.
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This year – 2023 – will be remembered across Canada as a year of extreme and deadly weather. Wildfires and smoke, floods, drought, extreme temperatures, tornados, and warming oceans left no region of the country unaffected.
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Like most municipalities in Canada, we are grappling with how to prevent and prepare for the impacts of a warming world. As a tourism town nestled in a national park, Banff already faces several challenges – affordable housing, cost of living, and vehicle congestion, to name a few – but climate change is the most imminent one because it can cause dramatic change to our lives and livelihoods.
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Like most municipalities in Canada, we are grappling with how to prevent and prepare for the impacts of a warming world. As a tourism town nestled in a national park, Banff already faces several challenges – affordable housing, cost of living, and vehicle congestion, to name a few – but climate change is the most imminent one because it can cause dramatic change to our lives and livelihoods.
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The Abbot Pass Refuge Cabin should still be standing, the snowmelt from its shake roof still flowing to both the Pacific and Atlantic oceans.
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Le Refuge-du-Col-Abbot devrait encore être debout, la neige fondant sur son toit de bardeaux s’écouler encore dans les océans Pacifique et Atlantique.
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For Dr. Brian Menounos, Professor and Canada Research Chair for Climate Change at the University of Northern British Columbia, glacial monitoring and long-term data sets are extremely important for anticipating future trends and understanding how glaciers are responding to climate change.
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Pour le Dr Brian Menounos, professeur et titulaire de la Chaire de recherche du Canada sur les changements climatiques à l’Université du Nord de la Colombie-Britannique, la surveillance des glaciers et les ensembles de données à long terme sont extrêmement importants pour anticiper les tendances futures et comprendre les réactions des glaciers au changement climatique.
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À l’automne de 2022, après quatre longues années de planification, d’un nombre étourdissant de reports dus à la pandémie, et d’une reconnaissance réussie (mais hâtive) en 2021, nous avons foré et extrait une carotte de glace de 327 mètres hors de l’éprouvant plateau du sommet du mont Logan.
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In the spring of 2022, after four protracted years of planning, multiple head-spinning pandemic-induced delays, and a successful-but-hasty reconnaissance in 2021, we drilled and retrieved a 327-metre deep ice core from Mount Logan’s brutal summit plateau.
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Tongarsoak is a powerful spirit that guards the Torngat Mountains of northern Nunatsiavut, Labrador. The soaring peaks are the highest mountains in North America east of the Rockies (1,600 metres above sea level), and have been the homeland of the Nunatsiavut and Nunavik Inuit for millennia.
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By their very nature, selected guides provide information on a limited number of peaks and routes – so where does one go to find information on alternate peaks or routes? Guidebook author David P Jones ponders the question.
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British Columbia is blessed with an abundance of glaciers, or about 16,428 individual ice masses based on the last provincial inventory. These glaciers act as important buffers for many mountain ecosystems since they provide cool, plentiful water to mountain rivers during late summer when the seasonal snowpack is depleted.
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When viewed from above or in a postcard, the mosaic of different colours of lakes in the Canadian Rockies appears serene – but their pristine and idyllic looks can be deceiving. Multiple novel and extreme environmental changes related to human activities are increasingly altering many of these lake ecosystems.
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