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UCSB ENVS 106 - Thinking In Systems Diagram Toolkit (2)

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Slide 1Toolkit: Stocks and FlowsSlide 3Slide 4Slide 5Slide 6Slide 7ES 106 – Thinking In Systems DiagramsPowerpoint Toolkit for System MapsCopy and Paste Items you need, and move things around in order to develop your systems thinking map skills!I’ve made these Slides 8½“ x 11” so that they should print out just fine. Be aware of getting your maps too close to the margins.You can also see examples of how one might develop system maps from what we’ve worked on in section.As you do this for your paper, keep in mind that you only need to map one system stock per article assigned in the paper, and that you don’t have to have every single feedback, since feedbacks abound. However, you should consider what the news articles discuss in terms of feedback, or add some of your own that you think are particularly relevant.Toolkit: Stocks and FlowsInflow ArrowStock BoxOutflow ArrowStock BoxYellow circles when you click on a circular arrow can allow you to alter the length of the arrow around the circleInflowOutflowInflowHere’s a bunch of items you can copy, paste, and manipulate to make a clean systems diagram. Fool around in PowerPoint to make your diagrams look good!Criminal ActivityConvictions Prison Population ReleaseCriminal Skill TransferLow Job Opportunity Upon ReleaseStock: Prison Population in an industrialized countryMandatory Minimum SentencingStock: Energy in the Earth-Atmosphere Climate SystemEnergy in the Earth SystemSunlight Waste HeatGeothermalSunspotsReflected LightCloud FormationFossil Fuel BurningGreenhouse GasesI only track two inputs of energy into the Earth-system, although there are others! The Earth gives off heat (geothermal, volcanoes, etc.), but gets the vast majority of energy from the sun. Sunspots may increase the energy from the Sun, but as we saw with Ben Santer, sunspots don’t add a whole lot to the energy in the Earth system.If thermal energy increases in the Earth system, it could mean more evaporation, which would mean more clouds, which would mean more reflected sunlight. HOWEVER, keep in mind that water vapor and water droplets also absorb significant amounts of waste heat (when the sun don’t shine, but also even when it does), so they contribute as well to potential decreases.Greenhouse gases also slow the rate of escape for waste heat as well, which are the result of fossil fuel burning. In a deeper systems thinking way, land-use changes can also mean less CO2 retention, and also increases in reflected light (you could track this with CO2 as a stock with its own box, but you can then see how complicated even a few factors can be!)Land Use ChangeStock: Trees in a forest that has some loggingTotal Tree MassTree RecruitsLoggingArtificial PlantingTree DeathParasitesGovernment SubsidiesCapital InvestmentClimate ChangeArtificial planting by loggers may mean that there are more recruits than the natural rate.Subsidies by government may encourage more logging, meaning total tree mass stock may go down without sustainability policies.Climate change has also shown to have an impact on parasites (e.g., pine beetles), which can accelerate tree death.Stock: Population of a burgeoning tech cityCity PopulationDeathsEmigrationHousing PricesYounger ImmigrantsHousing AvailabilityBirthsImmigrationHere we can see that younger immigrants into the city may mean that the death rate (in terms of deaths per 100,000 people/yr) may go down, but could eventually go back up as the population ages.You can also see the potential effects on housing availability, leading to prices going up. When prices go up, poorer people may leave the city limits.Stock: Installed rooftop photovoltaic (PV) systemsRooftop PV SystemsRemoval“Keeping up with the Joneses”Information About Neighbors InstallationsInstallationsGovernment SubsidiesThere are two potential factors listed here that suggest that PV installations could be affected. When government subsidies remain, installations may stay high. If subsidies go away, then installations could go down.There’s also an effect associated with neighbor perception, which again could increase


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