Amount of solar radiation incident, per unit area and time, on a surface which is perpendicular to the radiation and is situated at the outer limit of the atmosphere, the earth being at its mean distance from the sun. It equals approximately 2.00 ly/min (1400 W/m²).

Although not strictly constant, this number is the amount of solar power flux that passes through the mean Earth orbit. The currently accepted value is 1367 W/m2. Note that Earth-based instruments record lower values of solar power flux because of atmospheric attenuation.

2.0 calories/centimeter2/min at the out limits of the earth's atmosphere.

rare at which solar radiation is received on a unit surface perpendicular to the incident radiation per unit of time at Earth's mean distance, just outside Earth's atmosphere.

The quantity of solar energy normally received at the outer layer of the earth's atmosphere.

solar flux outside the earth's atmosphere on a plane normal to the direction of this radiation when the earth is at its mean distance from the sun (149.5 x 106) - defined as 1367 W/m2 (but may be revised within ±7 W/m2) [W/m2]   Solarkonstante

The strength of the solar radiation at the Earth atmosphere, at average distance from the sun, and is equivalent to 1.37 x 106 ergs/s cm2

the rate at which radiant solar energy is received at the outer layer of the earth's atmosphere

a amount of power that the Sun deposits by the unit region that is directly involved to sun

The average intensity of solar radiation reaching the earth outside the atmosphere; accounting to two langleys or 1.94 gram-calories per square centimeter, equal to 442.4 BTU/hr/ft.², or 1395 watts/m².

The power intensity (power per unit area) incident on the earth. Taken to be roughly 1340 W / sq meter.

The rate of solar energy reaching the outer limits of the earth's atmosphere has been determined to be 429 Btu/ft2/h on a surface perpendicular (90°) to the sun's rays.

The electromagnetic radiation from the Sun that falls on a unit area of surface normal to the line from the Sun, per unit time, outside the atmosphere, at one astronomical unit.

The rate at which energy is received from the sun just outside the earth's atmosphere on a surface perpendicular to the sun's rays. Approximately equal to 1.36 kW/m2.

is the average total radiation reaching the top of Earth's atmosphere from the sun. The number used for this constant, about 1370 watts per square meter, is not, in fact, truly constant; variations of about a tenth of a percent have been measured during the last two decades.

The solar constant is amount of solar power flux (energy flow) that passes through the Earth's orbit. The currently-accepted estimate of the solar constant is 1,367 Watts/m. Earth-based instruments record lower values of the solar constant because energy is absorbed and deflected by the Earth's atmosphere.

The amount of energy received from the Sun per unit area per unit time

The average amount of solar radiation that reaches the earth's upper atmosphere on a surface perpendicular to the sun's rays; equal to 1353 Watts per square meter or 492 Btu per square foot.

The average amount of solar radiation reaching a planet; usually expressed in watts (energy per unit time) per square meter. For Earth, the solar constant equals 1,372 W/m. Each planet has a unique solar constant depending on its distance from the Sun.