Impacts, Driving Forces and State Changes Flashcards
What are some of the driving forces behind Athropogenic Climate Change?
- Electricity use
- Transport
- Agriculture
- Land use & Forestry
- Industrial processes and product use
- Waste
- Fugitive Emissions
How are State Changes organised?
- They can be clearly distinguished because they do not directly involve humans; this is largely the domain of the natural sciences
- They are organised in a rough time order sequence but there are many loops and iterative processes
What are the first four major State Changes?
- Change in atmospheric GHG concentrations
- Temperature change in atmosphere, surface, oceans
- Water vapour concentrations increase with temperature; humidity change
- Change in oceanic CO2 concentrations
What is the fifth major State Change?
- Significant shifts in global
regional weather, rainfall, climate patterns and variability increase in extreme weather events, cyclones and storms - Cloud cover change, albedo effect, bushfires, increased wind speeds, increased frequency and intensity of heatwaves
What are the last two major State Changes?
- Melting polar, sea and other major ice regions
- Sea level rise; coastal inundation
What is the “Oceanic Current Shifts” State Change?
- The AMOC brings warm water from the equator up towards the Atlantic’s northern reaches and cold water back down through the deep ocean.
- The current is partly why meteorologists are linking changes in North Atlantic ocean temperatures to recent summer heat waves.
- May be from melting Greenland ice; winds; and ocean temp increase
What is the “Biodiversity Changes” and “Pests & Invasive Species” State Changes?
- Biodiversity Changes: growth rates of biomass;
habitat fragmentation and degradation; interfere with life cyles (e.g. germination) - Pests and invasive species: reduces the resilience of native species.
What is the “Potential Positive Feedback Loops” State Change?
- (e.g. melting of tundra; permafrost – methane release); shifting ocean currents; albedo effect of less ice (dark surfaces increase warming) => loop back to atmospheric GHG concentration change and temperature change and other processes, systems and cycles
What are some of the long-term effects of global climate change?
- Continued change in the atmosphere
- Temperature will continue to rise
- Frost-free Season (and Growing Season) will Lengthen
- Changes in Precipitation Patterns
- More Droughts and Heat Waves
- Hurricanes Will Become Stronger and More Intense
- Sea Level Will Rise 1-4 feet by 2100
- Arctic Likely to Become Ice-Free
What are some of the key potentially disturbing factors for Climate Change?
- Disruption and unpredictability (and perhaps the speed of change)
What are the first three impacts of climate change?
- Flooding of fertile land and major areas of human settlement; housing & infrastructure damage or loss (and costs for adaptation)
- Loss of safe areas for urban and other economic use
- Shifts in regional agricultural productivity (livestock, crops, horticulture) – from many state changes; heat stress
What are the 4th - 6th impacts of climate change?
- Major changes in water demands (and availability)
- Changes in energy and materials needed for heating and cooling
- Health impacts – famine, food insecurity, heat waves (and cold) weather effects; incidence and location of disease(e.g. malaria); air pollution (from fossil fuel); biosecurity risks; drought and mental health
What are the last four impacts of climate change?
- Increasing energy costs for accessing water supply and food
- Lifestyle recreation changes: air con; forests; water; heat
- Mass migration and dislocation; international conflict from loss of arable land and water supply change
- Water and air filtration (others ecosystem services) disruption
What is another way of classifying and examining potential impacts?
Economic/Market Impacts:
- Often clearly reflected in changes in economic costs and benefits in the market; but not all economic impacts are in the market
What are the market sectors for the market impacts?
- Forestry
- Fisheries
- Insurance
- Public infrastructure
- Energy
- Tourism/recreation
What are the non-market sectors for the market impacts?
- (Many are social impacts but also have an economic aspect)
- Human health
- Ecosystems
- Freshwater resources
- Dislocation/ social disruption and suffering/cultural losses
What is TEV?
- Total Economic Value (of natural resources)
- It’s the total positive value or benefit of a natural resource (to humans?) – e.g. the atmosphere
What is TEV used for?
- TEV is used to consider all of the benefits that natural systems currently provide us (or are likely to in the future) so that we can assess how the State Changes cause Impacts on humans.
How is TEV calculated?
- TEV = use + non-use values
- TEV = direct use + indirect use + option + bequest + vicarious + existence values