* Note: The ACIA report sourced some of its measurements and projections from the Third Assessment Report (TAR) published in 2001 by the Intergovernmental Panel on CLimate Change (IPCC). In its Fourt Assessment Report (AR4) published in 2007, the IPCC has refined some of the figures. For example,

1 The IPCC AR4 estimate of the Earth's average global temperature increase is 0.76°C.

2 The IPCC AR4 projection of sea level rise is 18-59 cm.
GreenFacts' summary of the IPCC AR4 is available at

Related publication:
Arctic Climate Change homeArctic Climate Change
Other Figures & Tables on this publication:

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