Climate - Insolation
Insolation is incoming solar radiation.
- The average amount of solar energy striking = 1000 watts / m2 at the equator.
- This energy is absorbed by the planet and released as longer wavelength energy.
- The energy gained from the sun = energy lost (or stored).
- Between about 30 N° and 30 S° latitude more energy is absorbed than re-radiated (net gain).
- Above 30 N° and below 30 S° latitude more energy is re-radiated than is absorbed (net loss).
- Ocean and wind currents re-distribute the sun's energy.
- At aphelion (early July) the Earth is 152.1 Million km from the Sun.
- At perihelion (early Jan) the Earth is 147.1 Million km from the Sun. Source: PhysicalGeography.net
- Earth's radius is 6378 km. or .004% of the AU.
Processes of Energy Transfer
- Emission of energy in form of electromagnetic radiation. Examples include radio waves, light waves, and x-rays.
- Energy movement between two objects in direct contact.
- Heat energy moved by a carrier such as air.