Terms by letter

All terms | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

total solar irradiance

The amount of solar energy hitting the top of the Earth’s atmosphere, currently accepted to be about 1,368 watts per square meter. Source: NASA (http://earthobservatory.nasa.gov/Glossary)