Carbon cycle in the Arctic
This schematic illustrates changes in the cycling of carbon in the Arctic as climate warms. For example, beginning at the left of the figure, the boreal forest absorbs CO2 from the atmosphere and this is expected to increase, although forest fires and insect damage will increase in some areas, releasing more carbon to the atmosphere. Increasing amounts of carbon will also move from the tundra to ponds, lakes, rivers, and the continental shelves in the form of carbon dissolved in water (dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), and particulate organic carbon (POC)).
Source: ACIA Impacts of a Warming Arctic: Arctic Climate Impact Assessment 
(2004),
Key Finding #2, p.39
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The Earth’s Greenhouse Effect
Observed Arctic Temperature, 1900 to Present
Observed sea ice September 1979 and September 2003
Surface Reflectivity
Projected Vegetation, 2090-2100
Arctic Marine Food Web
Map subregions sub-I
Map subregions sub-II
Map subregions sub-III
Map subregions sub-IV
Arctic Thermohaline Circulation
Carbon cycle in the Arctic
Projected Arctic Surface Air Temperatures
Freshwater food web
Projected opening of northern navigation routes
Factors influencing UV at the surface
1000 years of changes in carbon emissions
People of the Arctic
Projected Surface Air Temperature change 1990-2090
Melt of the Greenland Ice Sheet
An ice primer
Spruce Bark Beetle
Spruce Budworm
Peary Caribou
The Porcupine Caribou Herd
The Gwich’in and the Porcupine Caribou Herd
A permafrost primer
Seals Become Elusive for Inuit in Nunavut
Observed Climate Change Impacts in Sachs Harbour, Canada
Indigenous knowledge and observations of current trends
Case study of interacting changes: Saami reindeer herders
Indigenous knowledge and observations of current trends
Indigenous knowledge and observations of current trends
Indigenous knowledge and observations of current trends
Footnotes
