Languages:
 

Figure SPM-2 - Reasons for Concern

Risks per Degree of Climate Change

Figure SPM-2: Reasons for concern about projected climate change impacts.

The risks of adverse impacts from climate change increase with the magnitude of climate change. The top part of the figure displays the observed temperature increase relative to 1990 and the range of projected temperature increase after 1990 as estimated by Working Group I of the IPCC for scenarios from the Special Report on Emissions Scenarios.

The bottom panel displays conceptualizations of five reasons for concern regarding climate change risks evolving through 2100. White indicates neutral or small negative or positive impacts or risks, yellow indicates negative impacts for some systems or low risks, and red means negative impacts or risks that are more widespread and/or greater in magnitude.

The assessment of impacts or risks takes into account only the magnitude of change and not the rate of change. Global mean annual temperature change is used in the figure as a proxy for the magnitude of climate change, but projected impacts will be a function of, among other factors, the magnitude and rate of global and regional changes in mean climate, climate variability and extreme climate phenomena, social and economic conditions, and adaptation."

Source & © IPCC TAR SPM of WG II 

Related publication:
Climate Change (2001) homeClimate Change 2001 Assessment
Other Figures & Tables on this publication:

Adaptive Capacity, Vulnerability, and Key Concerns by Region

Facts on environmental matters

Table SPM.1 Estimates of potential global greenhouse gas emission reductions in 2010 and in 2020

The Emissions Scenarios from the Special Report on Emissions Scenarios (SRES)

Expert Links on Climate Change

Expert Links on Climate Change

Links on Climate Change

Expert Links on Climate Change

Expert Links on Climate Change

Expert Links on Climate Change

Expert Links on Climate Change

Expert Links on Climate Change

Other views on Climate Change

Footnotes for the Summary for Policymakers of IPCC Working Group III

Footnotes for Table 1 of IPCC SPM WG II

Footnotes for the Summary for Policymakers of IPCC Working Group 1

Footnotes for the Summary for Policymakers of IPCC Working Group II

Variations of the Earth's surface temperature for :

Indicators of the human influence on the atmosphere during the Industrial Era

The global mean radiative forcing of the climate system for the year 2000, relative to 1750

Simulated annual global mean surface temperatures

The global climate of the 21st Century

Documented Climate Change Impacts

Figure SPM-2 - Reasons for Concern

Figure SPM-3 - Projected Changes in Annual Runoff

Carbon in Oil, Gas and Coal Reserves Compared with Historic Fossil Fuel Carbon Emissions (in gigatonnes)

Footnotes to Table SPM-1 (Question 6.2.2)

Figure 8.1 Precipitation

Figure 8.2 Hurricanes

Schematic of observed variations of the temperature indicators / the hydrological and storm-related indicators

Many external factors force climate change

The annual mean change of the temperature (colour shading) and its range (isolines)

Analysis of inter-model consistency in regional relative warming

GCRIO

UNFCCC

Pew Climate

NCDC

Climate Ark

Climatic Research Unit

CICERO

World Business Council for Sustainable Development

Expert Links on Climate Change