Carbon Footprint Calculator Link https www nature orgenusgetinvolvedhowtohelpconsideryourimpactcarboncalculator

Carbon Footprint Calculator Link: https: //www. nature. org/en-us/get-involved/how-tohelp/consider-your-impact/carbon-calculator/ (on Canvas, or google “carbon footprint calculator”) Choose to calculate this for: • just you • your entire house / apartment.

Questions?

Places we’re going today ü Calculate your carbon footprint • Crowdsourced concept review • Kaya Identity model After class • Lingering exam / homework / reading questions

Places we’re going next week? • …

Preparing for Exam 4 Key Concepts 1. Climate Forcings and Sensitivity 2. Milankovitch Cycles and Glaciations 3. Paleoclimate Proxies (d 18 O) 4. Aerosol Effects (direct + indirect)

Preparing for Exam 4 Other Concepts • Carbon Emissions Scenarios (Kaya Identity, RCPs) • Global Population Trends • Aerosol Scattering Efficiency • Global Patterns of Climate Change • Antarctic Ozone Hole + CFCs (save for final exam)

Kaya Identity model Link: http: //climatemodels. uchicago. edu/kaya (on Canvas, or google “kaya identity model”) What is it? Developed by an energy economist, the Kaya Identity equation describes anthropogenic CO 2 emissions as a function of population, GDP, energy consumption, and the carbon footprint of energy (carbon intensity).

Kaya Identity model What is it? Developed by an energy economist, the Kaya Identity equation describes anthropogenic CO 2 emissions as a function of population, GDP, energy consumption, and the carbon footprint of energy (carbon intensity).

Kaya Identity model Global Population Economic Intensity Energy Intensity Carbon Intensity (GDP per capita) What is it? Developed by an energy economist, the Kaya Identity equation describes anthropogenic CO 2 emissions as a function of population, GDP, energy consumption, and the carbon footprint of energy (carbon intensity).

Estimate historical growth rate Tasks Play around with the GDP per capita settings (% change per year) until you get a reasonable fit to the data.

Estimate historical growth rate Tasks Play around with the Energy Intensity settings (% change per year) until you get a reasonable fit to the data. What does this mean?

Declining energy consumption per $ GDP Increasing energy productivity in $ GDP / BTU (energy)

Estimate historical growth rate Tasks Play around with the Carbon Intensity settings (% change per year) until you get a reasonable fit to the data. What does this mean?

Declining carbon emissions per energy consumption

Note: US data only

Estimate historical growth rate 1 How does your model compare to the data in terms of carbon emissions? 2 Based on these historical growth rates, what is the predicted temperature change by 2100? What about sea level rise? What contributes most?

How can we get to 2°C? Tactics | Choose one 1. Global population 2. Economic growth 3. Energy intensity 4. Carbon intensity

How can we get to 2°C? Tactics | Choose multiple 1. Global population 2. Economic growth 3. Energy intensity 4. Carbon intensity 5. Some combination of the above