Full Name Total Solar and Spectral Irradiance Sensor 1 - Total Irradiance Monitor Status Operational
Instrument Agencies NASA, NOAA Maturity
Instrument Type Earth radiation budget radiometers Geometry
Instrument Technology Solar irradiance monitor Sampling Imaging
Data Access Open Access Data Format ASCII, HDF-5
Measurements and Applications Measurement of total solar irradiance directly traceable to SI units with an absolute accuracy of 0.035% and relative accuracy of 0.002% per year.
Resolution Summary
Swath Summary Looks at the sun every orbit, providing 15 measurements per day.
Accuracy Summary Estimated uncertainties ~160 ppm.
Waveband Summary Total spectra
Instrument Measurements
Measurements Overview
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-1-on-ISS - International Space Station/Total and Spectral solar Irradiance Sensor (2017 - 2026)