1 / 29

Climate change, Does it matter? Martin Hedberg meteorologist Swedish Weather Center

Climate change, Does it matter? Martin Hedberg meteorologist Swedish Weather Center. Weather (Precipitation, clouds, winds, humidity, temperature…) Natures way of balancing forces in the atmosphere. Climate Climate: Statistics about the weather.

pacer
Download Presentation

Climate change, Does it matter? Martin Hedberg meteorologist Swedish Weather Center

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Climate change, Does it matter? Martin Hedberg meteorologist Swedish Weather Center

  2. Weather (Precipitation, clouds, winds, humidity, temperature…) Natures way of balancing forces in the atmosphere.

  3. ClimateClimate: Statistics about the weather. Climate is the average weather pattern over a longer period of time. 100 years

  4. Climate change (Weather patterns, glaciers, sea level rise…) Climate change is a significant change in weather patterns. When you put it in the perspective of a longer period of time you find it has happened many times before. 100 000 years

  5. Greenhouse effectAt any planet with an atmosphere.

  6. Energy radiates from the earth surface Energy radiates from the atmosphere Greenhouse gases are being warmed by the radiation from earth Radiation from the sun warms the earth’s surface Withgreenhouse gases: +15 degrees! Withoutgreenhouse gases: -18 degrees!

  7. - Climate change - • External causes • Solar activity • Earths orbit • Meteorites • Internal causesAnthropogenic • Emissions of greenhouse gases • Particles/clouds • Land change • Internal causesNatural • Feedback • Volcanic eruption • Chance

  8. Greenhousegases (has a warming effect) Left in the atmosphere for 100 years Particles (mostly a cooling effect) Left in the atmospherefor 1 week

  9. Roger Revelle and Hans E. Suess. Carbon Dioxide Exchange Between Atmosphere and Ocean and the Question of an increase of Atmospheric CO2 during the Past Decades. Tellus 1957.

  10. Carbon dioxide is used to describe how we affect the climate CO2  Easy to make statistics from  Easy to compare to historical climate  There are more greenhouse gases, both natural and anthropogenic  There are more things than greenhouse gases that affect the climate

  11. Climate change within 100 years: About half an ice age, but on the warm side Year 2100? Year 2000 Year 1900 Ice age

  12. Temperature as a tool to measure climate change  Easy to make statistics from  Easy to compare to historical climate change  Might misunderstand ”climate-temperature” vs. daily temperature  Climate change is also precipitation, humidity, winds etc

  13. The thermometer is how we measure climate change But it isn’t about the temperature itself. It is all about the consequences.

  14. Ideström & Skinnarmo

  15. It’s getting warmer. • More evaporation. And more rain. • Sea-levels are rising, Glaciers are melting, Extreme weather... • Plants and animals adapt, or disappear. • People and societies adapt.

  16. Humanity's large self-deception ”It’s just natural climate change” ”When we understand all the physics, we can stop it” ”Somebody else has to lower their emissions”

  17. Many small steps. They all add up.

  18. More effective use of energy • Renewable energy • Capture carbon dioxidefrom both bio-fuels and fossil fuels

  19. Weather patterns changeWhen, where, how often, strength… Average temperature rises More evaporation. Drought, erosion, wildfires… More/heavier precipitationFlooding, landslides…

  20. Climate has… Long braking distance

  21. Climate has… Domino effects

  22. Climate has… Many irreversible processes

  23. YES Climate change matters. As usual.

More Related