Measurements and Applications
Measures solar spectral irradiance in the 0.2 - 2 µm range.
Full Name
Total Solar and Spectral Irradiance Sensor 1 - Spectral Irradiance Monitor
Status
Operational
Instrument Agencies
Maturity
Medium Heritage
Instrument Type
Earth radiation budget radiometers 
Geometry
Instrument Technology
Solar irradiance monitor
Sampling
Imaging
Data Access
Open Access
Data Format
ASCII, HDF-5
Swath
Looks at the sun every orbit, providing 15 measurements per day.
Accuracy
Estimated uncertainties between 200-460nm = 0.42%, between 460-2400nm = 0.24%.
Waveband
UV - SWIR: 0.2 - 2 µm
| 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) |
NPOESS-1 - National Polar-orbiting Operational Environmental Satellite System - 1 (2013 - 2020) |
TSIS-1-on-ISS - International Space Station/Total and Spectral solar Irradiance Sensor (2017 - 2026) |
| NPOESS-6 - National Polar-orbiting Operational Environmental Satellite System - 4 (2019 - 2024) |
| Free Flyer-2 - JPSS Free Flyer-2 (2021 - 2026) |