GEO 121 1st Edition Lecture 8Outline of Last Lecture I. Review of Scales1. Types of Scales2. Common ScalesII. Aerial PhotographsOutline of Current Lecture I. Why Should We Care About The Sun's Position?II. Influences on Radiation at the Earth's SurfaceIII. Tropics of Cancer and Capricorn IV. Rotation and Revolution of EarthCurrent Lecture:Why should we care about the sun's position at noon?Maximum impact of solar radiationoAt noon the sun strikes the Earth at 90 degreesoNormally it strikes the Earth at a lower angleInfluences on Radiation at the Earth's SurfaceRotationRevolutionParallelismIncline Tropics of Cancer and CapricornCancer = 23.5 degrees NoJune 21, Summer SolsticeCapricorn = 23.5 degrees SoDecember 21, Winter SolsticeThe highest and lowest positions of the sunRotation and Revolution of EarthRotation of the EarthoOnce every 24 hoursoWest to East, creates day and nightRevolution of the EarthoPosition of the Earth around the SunoOnce every 365 1/4 days The extra quarter day is what makes our leap years every 4
View Full Document
Unlocking...