SIM

Spectral Irradiance Monitor

Satellite

SORCE

Status

Operational - Utilised in the period 2003 to ~ 2009

Mission

Spectral solar irradiance in UV/VIS/NIR/SWIR

Instrument type

Prism spectrometer for spectral irradiance: range 0.2-2.0 μm, spectral resolution from 0.25 to 33 nm

Scanning technique

Sun pointing during orbital movement, data sampled every 2 min

Coverage/cycle

One measurement after integration on all data taken during the diurnal orbit arc; thus 100 min

Resolution (s.s.p.)

N/A (sun pointing)

Resources

Mass 22 kg - Power 25.3 W - Data rate …... kbps