Arctic Climate Impact Assessment

Arctic Council

Ice cores and other evidence of climate conditions in the distant past provide evidence that rising atmospheric carbon dioxide levels are associated with rising global temperatures. Human activities, primarily the burning of fossil fuels, and secondarily clearing of land, have increased the concentration of carbon dioxide, methane, and other heat-trapping ("greenhouse") gases in the atmosphere.

study

Solar Variability Unlikely Caused Recent Warming

Max Planck Institute, U. Oulu
Lead Authors: S. K. Solanki, I. G. Usoskin
Where published: Nature

Solar variability is unlikely to have been the dominant cause of the strong warming during the past three decades

Study

Greenhouses Gases Explain Recent Warming

Hadley Centre
Lead authors: Peter Stott, Gareth Jones, John Mitchell

results confirm previous analyses showing that greenhouse gas increases explain most of the global warming observed in the second half of the twentieth century

study

Warming Arctic Temperature

NASA Goddard Center
Author: Josefino C. Comiso
Where published: Journal of Climate

twenty-year record of space based measurements has been analyzed by researchers at NASA's Goddard Space Flight Center. Based on their findings, evidence of a warming planet continues to grow
article

IPCC 2001 Report

Intergovernmental Panel on Climate Change

Emmissions of greenhouse gases and aerosols due to human activities continue to alter the atmosphere in ways that are expected to alter the climate
article

Human Induced Ocean Warming

National Oceanic & Atmospheric Administration, Geophysical Fluid Dynamics Laboratory, National Ocean Data Center, Air Resources Laboratory
Lead author: Syd Levitus
Where published: Science Magazine

The ocean has become warmer in the last 50 years and that warming is likely due to human-induced causes such as increases in atmospheric greenhouse gases
article

Greenhouse Gases Anthropogenic

US Dept of Energy, Livermore Labs
Lead author: Benjamin Santer

identified the anthropogenic "fingerprint" of climate change that took into account the confounding effects of natural variations
...
hard evidence that human activities have global-scale consequences
article

Ocean Warmed Significantly

NOAA
Lead author: Sydney Levitus
Where published: Science

World ocean has warmed significantly during the past 40 years... Our results support climate modeling predictions that show increasing atmospheric greenhouse gases will have a relatively large warming influence on the earth's atmosphere.

article

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