ACRIM
Active Cavity Radiometer Irradiance Monitoring (ACRIM)*
Introduction
Instruments
SUSIM
Solar Ultraviolet Spectral Irradiance Monitor (SUSIM)*
SIM
Information about SIM.
TIM (Total Solar Irradiance Monitor)
The TSIS TIM is a heritage instrument of currently flying SORCE TIM. The TIM will measure the total solar irradiance (TSI), the spatially and spectrally integrated solar radiation incident at the top of the Earth’s atmosphere.Using electrical substitution radiometers (ESRs) and taking advantage of new materials and modern electronics, the TIM measures TSI to an estimated absolute accuracy of 100 ppm (0.01%).