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Geography
Ecosystems
Global warming
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Created by
Esmee Jacob
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Cards (26)
What is the greatest rate of global warming observed?
High latitudes
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How much has the world temperature increased in the last 150 years?
Almost
1°C
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What percentage of the temperature rise occurred in the last 40 years?
Half
of the rise
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How much warmer is the Arctic compared to historical temperatures?
3°C
warmer
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What does the UN Paris Agreement predict for global temperature increase?
Restrict to no more than
2°C
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What do scientists claim will happen to the Arctic by 2050?
Further
temperature increase
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What are the two types of environmental changes due to global warming?
Biotic
changes (living)
Abiotic
changes (non-living)
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What is one biotic change observed in the tundra?
Spruce
trees invading southern tundra
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How much earlier do berries ripen in Eastern Alaska compared to a generation ago?
2 weeks
earlier
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How have Siberian Nenets reindeer herders adapted to vegetation changes?
Modified
practices to cope with changes
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What new animal has been found in Alaskan rivers?
Beavers
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How much earlier is winter snowmelt occurring in Alaska compared to the 1970s?
10
days earlier
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How much has the summer growing season been extended?
1-3 weeks
longer
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How many frost-free days have increased in Fairbanks, Alaska?
From
82
to
106
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What impact has thawing permafrost had on environments?
Impacted physical
and
human environments
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How have Inuit fishing patterns changed in Canada?
Due to
disappearing
summer
lakes and marshes
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What has increased in Alaska and Siberia due to global warming?
Summer wildfires
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What causes the increase in summer wildfires?
Surface vegetation
drying out
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What geological events have increased due to global warming?
Landslides
and
mudflows
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What additional abiotic impact is noted due to global warming?
Gas releases
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What is the effect of longer, warmer summer seasons?
Increased
decay
and decomposition
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What is the potential global impact of thawing tundra organic material?
Release of
CO2
and methane
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What percentage of the world's carbon is stored in permafrost?
14%
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What happens to carbon when tundra plants die?
Locked away as frozen
organic material
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How does global warming affect the carbon sink function of tundra plants?
Allows
thawing
and
decomposition
of organic material
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What is the consequence of increased decay in the Arctic Tundra?
Acceleration of
global climate change
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