Feature - Climate Change

Stabilisation levels and probability ranges forto temperature increases Eventual Temperature change(relative pre-industial)

11

Food Food

22

Severe impacts Severe impacts in marginal in marginal Sahel region Sahel region

33

44

Falling crop yields in many developing regions Falling crop yields in many developing regions

Small mountain glaciers Small mountain glaciers disappear worldwide, disappear worldwide, potential threat to water potential threat to water supplies in several areas supplies in several areas

Coral reef ecosystems Coral reef ecosystems extensively and eventually extensively and eventually irreversibly damaged irreversibly damaged

Ecosystems Ecosystems Extreme Extreme Weather Weather Events Events Risk of of Rapid Rapid Risk Climate Change Change Climate and Major Major and Irreversible Irreversible Impacts Impacts

Entire regions experience major Entire regions experience major declines in crop yields declines in crop yields (up to 1/3 in Africa) (up to 1/3 in Africa)

Rising number of people at risk from Rising number of people at risk from hunger, with 1/2 of the increase in hunger, with 1/2 of the increase in Africa and West Asia Africa and West Asia

Yields in many developed regions Yields in many developed regions decline even if strong carbon fertilization decline even if strong carbon fertilization

Rising crop yields in high-latitude developed Rising crop yields in high-latitude developed countries if strong carbon fertilization countries if strong carbon fertilization

Water Water

55

Significant changes in water availability Significant changes in water availability (e.g. more than a billion people suffer (e.g. more than a billion people suffer water shortages in the 2080s, many in Africa, water shortages in the 2080s, many in Africa, while a similar number gain water) while a similar number gain water) Sea level rise threatens Sea level rise threatens major world cities including major world cities including London, Shanghai, New Greater than 30% decrease London, Shanghai, New Greater than 30% decrease York and Hong Kong in runoff in Mediterranean York and Hong Kong in runoff in Mediterranean and Southern Africa and Southern Africa Possible onset of collapse Possible onset of collapse of part or all of Amazon of part or all of Amazon rainforest rainforest

Large fraction of ecosystems unable to maintain current form Large fraction of ecosystems unable to maintain current form Many species species face face extinction extinction Many (20 –– 50% 50% in in one one study) study) (20

Rising intensity of storms, forest fires, droughts, flooding and heat waves Rising intensity of storms, forest fires, droughts, flooding and heat waves Small increases increases in in hurricane hurricane Small intensity lead lead to to aa doubling doubling of of intensity damage costs costs in in the the U.S U.S damage Risk of weakening of natural carbon absorption and possible increasing Risk of weakening of natural carbon absorption and possible increasing natural methane releases and weakening of the Atlantic THC natural methane releases and weakening of the Atlantic THC Onset of of irreversible irreversible melting melting Onset of the the Greenland Greenland ice ice sheet sheet of

Increasingrisk riskofofabrupt, abrupt,large-scale large-scaleshifts shiftsininthe the Increasing climatesystem system(e.g. (e.g.collapse collapseofofthe theAtlantic AtlanticTHC THC climate andthe theWest WestAntarctic AntarcticIce IceSheet) Sheet) and

Source : Stern Review on the Economics of Climate Change

(c) WWF-Canon / Martin HARVEY

00