GEOG 1 Lecture Notes - Lecture 3: Plate Tectonics, Axial Tilt, Shortwave Radio
Document Summary
Change in the atmospheric greenhouse gas concentrations (co2 carbon dioxide, ch4. Orbital variation (obliquity, precession and eccentricity) natural. Climate changes have occurred prior to human habitation of the earth. Scientists have an accurate 400,000 ears paleoclimatic reconstruction, which indicates both warmer and cooler condition than today. Plate tectonics very important within the past 12,000 years. Weather conditions are what we experiences on a day-to-day basis. Climate is the long-term (tens of years of more) average of conditions in a region. Orbital variations of the earth around the sun. Orbit around the sun closer and further resulting in warmer or cooler. Degree of tilt into the sun greater tilt warmer lesser tilt cooler. Season of the tilt winter or summer northern hemisphere tilts into the sun on december. 21st past it tilted into the sun on june 21st resulting in hot summer and no ice on earth. Every year the earth 22. 1 or 24. 5 degree tilt.
