EESA01H3 Lecture Notes - Lecture 4: Shortwave Radiation, Electromagnetic Radiation, Solar Irradiance

• School: UTSC
• Department: Environmental Science
• Course: EESA01H3
• Professor: Carl Mitchell

Document Summary

Basics of energy and climate: warm substance is warm because it holds more energy than cold substance. If warm substance becomes cooler, its because energy is leaving substance. In a steady-state earth, incoming energy will equal to outgoing energy over a year. Earth"s climate is all about energy uxes and the balance between outgoing and incoming energy. Energy cannot be created or destroyed, just transferred. Insolation is energy received from the sun(incoming solar radiation) Shortwave radiation inputs include: ultraviolet light(uv, visible light, near-infrared wavelengths. Insolation and earth"s tilt and rotation produce the daily, seasonal, and annual patterns of day length and climate. Sun is short waves while earth is long waves. Energy flux: rate(amount per time) of energy(joules) received at a surface is called power(js^-1). Power per surface area is an energy flux and is measured in. Wm^-2: rate of energy emitted by a substance is governed by the stefan-