AM 0
sunlight
Solar
irradiance
in space just above the atmosphere of the earth on a plane perpendicular to the direction of the sun (air mass,
AM
, zero). Also called extraterrestrial irradiance.
See also:
AM 1 sunlight
Source:
PAC, 2007,
79
, 293
(Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006))
on page 302