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365 Days of Climate Awareness 341 – IPCC Vol. 2 Chap. 14: North America [1]
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Date: 2022-07-20
Over the past twenty years, impacts of climate change have grown in frequency and strength. As elsewhere on the planet, rising temperatures have increased heat-related deaths, vector-borne, water-borne and food-borne illnesses. These impacts are not equal throughout regions or economic strata, but fall more heavily on poorer, lower-lying regions. Since 1961 agricultural productivity has declined by 12.5%, with losses starting in Canada and moving progressively toward the south. Droughts have disproportionately affected the farther north areas (as opposed to the already-arid, already-hotter south). Temperature rise has negatively impacted aquaculture, and led to rapid movement of species which has put severe stress on ecosystems, above all where the migrants invade.
Reduced snowpack throughout the continent has reduced freshwater availability and caused lake and river systems to deteriorate in quality. Meanwhile, exploitation, especially in the southwestern US, has disrupted ecosystems through lack of water. Water quality and availability are impacting agriculture, fisheries, tourism and other industries. Rising temperatures in the air, ocean and freshwater, and in the ground are affecting nearly all species and leading to die-offs. Nature-based forest management systems, such as controlled burns and other techniques, are increasingly unable to keep up with extreme heat and arid conditions which produce massive fires.
Disaster recovery is claiming an increasingly large share of public and private expenditures. Indigenous peoples, already pushed to the margins of survival in many camps across the continent, are being disproportionately impacted by drought and, further north, loss of ice and permafrost. These effects are expected to worsen considerably in the coming century, especially without mitigation and adaptation.
Tomorrow: small islands.
Be brave, be steadfast, and be well.
Source:
IPCC 6th Assessment Report, Vol. 2, Chap. 14
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