Objectives and Applications
TRUTHS will provide ultra high accuracy International System of Units (SI-traceable) spectrally resolved measurements of incoming and Earth reflected solar radiation, globally sampled at 50 m spatial resolution as a benchmark for radiation budget and other climate indicators in the solar reflective domain e.g cloud, Albedo, Land products, Ocean colour, and carbon cycle. Designed explicitly as an operational climate mission TRUTHS in addition to its own data, provides reference calibration to other optical sensors operating in the spectral range 320 to 2400 nm, including amongst other 'new space' sensors and the future GHG constellation, improving their performance and interoperability. It also provides a radiometric SI-traceable anchor to existing post-launch calibration infrastructure such as deserts and the Moon. The mission additionally provides spectrally resolved and total solar irradiance measurements for climate and atmosphere/surface interaction studies.
Full Name
Traceable Radiometry Underpinning Terrestrial- and Helio- Studies (TRUTHS)
Mission Status
Approved
Mission Agencies
Launch Date
Mar 2030
Mission Links
EOL Date
Sep 2035
Orbit Type
Inclined, non-sun-synchronous
Orbit Period
96.9 minutes
Orbit Sense
TBD
Orbit Inclination
90 deg
Orbit Altitude
610 km
Orbit Longitude
Orbit LST
2023-09-12T11:37:39.024+1000
Repeat Cycle
61 days
NORAD Catalog #
International Designator
CSAR - Cryogenic Solar Absolute Radiometer |
| HIS - Hyperspectral imaging Spectrometer |
| Category | Parameter | Instrument(s) |
| Atmosphere | Radiation budget | CSAR, HIS |
| Land | Albedo and reflectance | HIS |
| Vegetation | HIS |
| Snow & Ice | Snow cover, edge and depth | HIS |
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