1 / 14

The Natural Greenhouse Effect and Anthropogenic (Enhanced) Greenhouse Effect

The Natural Greenhouse Effect and Anthropogenic (Enhanced) Greenhouse Effect. Definition: “Anthropogenic” = Caused by humans; resulting from human influence on the natural world. The Natural Greenhouse Effect: Notes. Natural process!

Download Presentation

The Natural Greenhouse Effect and Anthropogenic (Enhanced) Greenhouse Effect

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. The Natural Greenhouse EffectandAnthropogenic (Enhanced) Greenhouse Effect

  2. Definition: “Anthropogenic” = Caused by humans; resulting from human influence on the natural world

  3. The Natural Greenhouse Effect: Notes • Natural process! • GHGs (greenhouse gases) and clouds absorb infrared radiation from earth’s surface, and radiates it back towards the surface; • Heats the atmosphere and surface (keeps earth warm enough for life);

  4. What are some ways that humans contribute GHGs into the atmosphere? Vehicles, industrialization, deforestation (cut down trees which remove CO2 from air) Why is this also called the Enhanced Greenhouse Effect? Natural Greenhouse Effect is strengthened and amplified by human contributions.

  5. Keeling Curve (CO2 Seasonal Variations)

  6. What accounts for the seasonal rise and fall in CO2 in the Keeling Curve? Plant photosynthesis in summer (CO2 goes down), less photosynthesis in winter (CO2 goes up) What planet is cold due to a lack of CO2 in its atmosphere? What planet demonstrates the results of an abundance of atmospheric CO2? Mars (cold), Venus (hot)

  7. Why is CO2 of concern compared to water vapour (another GHG)? Permanence, longer lasting in atmosphere (average: 100 years) What source of evidence do we have for CO2 levels prior to the Industrial Revolution? CO2 dissolved in ice cores, layers in ice cores indicate years/age.

More Related