THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - TSIS-2/SIM -
Full Name Total Solar and Spectral Irradiance Sensor 2 - Spectral Irradiance Monitor Status Being developed
Instrument Agencies NASA Maturity
Instrument Type Earth radiation budget radiometers Geometry
Instrument Technology Solar irradiance monitor Sampling Other
Data Access Open Access Data Format
Measurements and Applications Measures spectral solar irradiance over three bands ranging from 200 to 2400 nm.
Resolution Summary 2-45 nm
Swath Summary
Accuracy Summary 1% between 200 and 400 nm, 0.5% >400 nm
Waveband Summary Three bands: 200 - 280 nm, 280 - 400 nm, and 400 - 2400 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 search ECV Inventory records
Instrument Missions
TSIS-2 - Total and Spectral solar Irradiance Sensor 2 (2024 - 2027)
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