irradiance
(EMR power reaching a surface)
Irradiance is the amount of electromagnetic radiation (EMR) per unit time
(quantified as the EMR's power, i.e., energy per unit time)
striking a surface per unit area, from any direction.
It is conceptually the sum of the intensity (i.e., radiance)
from all directions.
Typical units:
- W/m² (watts per meter-squared; SI units).
- ergs/s/cm² (ergs per second per centimeter-squared; CGS units).
Spectral irradiance is irradiance per wavelength
or frequency.
(measure,EMR)
Further reading:
https://en.wikipedia.org/wiki/Irradiance
https://glossary.ametsoc.org/wiki/Irradiance
https://glossary.ametsoc.org/wiki/Spectral_irradiance
https://dictionary.obspm.fr/index.php?showAll=1&formSearchTextfield=irradiance
https://www.rp-photonics.com/irradiance.html
Referenced by pages:
flux density
insolation
radiative flux
Solar Maximum Mission (SMM)
Upper Atmosphere Research Satellite (UARS)
watt (W)
Index