Lecture 20 Global Warming

Lecture 20 Global Warming - Lecture 20 Global Change:...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
World Population 6,706,992,932 The Challenge: Sustainable Management of an Ever-Changing Planet Lecture 20 Global Change: Climate Anthropogenic???? A look at: The Greenhouse effect Greenhouse Gases Effects from increases in GG What is being done Forcing factors: Stratosphere: 15-40 km Little interaction with earth Contains Ozone Layer Troposphere: <15 km weather, human interaction pollution Important: Composition of the Troposphere Interaction with energy Atmosphere Earth Surface Energy Budget Incoming radiation Heats surface Melts H 2 O Evaporates H 2 O Photosynthesis The Greenhouse Effect Short wave radiation Heats surface Surface emits long wave radiation, most is absorbed by greenhouse gases and returned to the earth, surface gains more heat Earth Solar Radiation
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Refrigerators; Aerosol spray propellants; Cleaning solvents 900 ppt 0 CFCs Forests; Grasslands; Oceans; Soils; Soil cultivation; Fertilizers; Biomass burning; Burning of fossil fuels 310 ppb 280 ppb Nitrous Oxide Wetlands; Organic decay; Termites; Natural gas & oil extraction; Biomass burning; Rice cultivation; Cattle; Refuse landfills 1.70 ppm 0.70 ppm Methane Organic decay; Forest fires; Volcanoes;
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

Lecture 20 Global Warming - Lecture 20 Global Change:...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online