Ottawa Citizens’ Ottawa Citizens’ Conference on Conference on

Climate ChangeClimate Change

John M R StoneJohn M R Stone

Carleton UniversityCarleton University

The Beginning of the The Beginning of the StoryStory

Observations started

Beginning of concern

IPCC created

UN/FCCC signed

Today’s Concentrations

CO2

CH4

Into Uncharted Into Uncharted TerritoryTerritory

The Earth out of The Earth out of BalanceBalance

Fossil fuel burning (7.2) Deforestation (1.6)

Atmospheric Increase (4.1)

Forest Regrowth (2.6)Ocean Uptake (2.2)

(in GtC/year)

The Carbon Cycle

Emissions Emissions Continue to RiseContinue to Rise

Global Mean Global Mean TemperaturesTemperatures

Continue to IncreaseContinue to Increase

The Prospect of a The Prospect of a Warmer WorldWarmer World

European Heat-Wave European Heat-Wave 20032003

Arctic Sea-Ice is Arctic Sea-Ice is DecliningDeclining

Water Water AvailabilityAvailability

Health EffectsHealth Effects

Sea-Level RiseSea-Level Rise

Post-AR4

[0.5 – 2.0m]

Stabilizing Stabilizing ConcentrationsConcentrations