CEOS EO HANDBOOK – INSTRUMENT SUMMARY - SIM -
Full Name Spectral Irradiance Monitor Status No longer operational
Instrument Agencies NASA Maturity
Instrument Type Earth radiation budget radiometers Geometry
Instrument Technology Solar irradiance monitor Sampling Imaging
Data Access Open Access Data Format HDF
Measurements and Applications Measures solar spectral irradiance in the 200 - 2000 nm range.
Resolution Summary
Swath Summary
Accuracy Summary 2% (0.02)
Waveband Summary UV - SWIR: 200 - 2490 nm
UV (~0.01 µm - ~0.40 µm)
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
SWIR (~1.3 µm - ~3.0 µm)
Instrument Measurements
Measurements Overview
CategoryParameter
Radiation budgetDownwelling (Incoming) solar radiation at TOA
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Earth Radiation Budget click here click here NOAA Climate Data Record (CDR) ofSolar s...
NOAA Climate Data Record (CDR) ofSolar s...
NOAA Climate Data Record (CDR) ofSolar s...
Instrument Missions
SORCE - Solar Radiation and Climate Experiment (2003 - 2020)