Youtube
Video, "How climate change is speeding up the great Arctic
melt"
Changes in the Arctic.
The temperatures in the Arctic continue to rise at
three times the global annual average, driving many
of the changes underway in the Arctic. Most
prominently, snow and ice are melting at an
increasing rate. This impacts both local ecosystems
and the global climate system. It contributes to
rising sea levels, and is likely to provoke extreme
temperature events beyond the Arctic. The effects of
a shifting Arctic climate are felt across the high
latitudes and beyond – with global environmental,
economic, and social implications.
a
Melting
ice:
Snow and ice are melting at an increasing rate,
contributing to rising sea levels The loss
of sea ice threatens the habitat of marine
mammals and disrupts the food supply of Arctic
communities
Loss of sea ice and ocean warming :
The loss of reflective sea ice and ocean warming
are changing the abundance and range of fish
species
The longer ice-free season exposes Arctic
communities to erosion from winter storms
Transformation of the tundra :
The tundra is being transformed from a carbon sink
to a carbon source due to increased wildfires
The tundra is becoming a source of carbon to the
atmosphere, which is already absorbing record levels
of heat-trapping fossil fuel pollution
Other changes:
Declines of previously large inland caribou herds
Increasing winter precipitation, Changes in food
webs, prey populations, and the arrival of new
marine mammal species
Expansion of harmful algal blooms.