Thomas C. Stone
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Monitoring aerosol optical depth during the Arctic night: Instrument development and first results Open
Moon-photometric measurements were made at two locations in the Arctic during winter nights using two different modified Sun photometers; a Carter Scott SP02 and a Precision Filter Radiometer (PFR) developed at PMOD/WRC. Values of aerosol …
ARCSTONE: calibration of lunar spectral reflectance from space. Prototype instrument concept, analysis, and results Open
The ARCSTONE project objective is to acquire accurate measurements of the spectral lunar reflectance from space, allowing the Moon to be used as a high-accuracy SI-traceable calibration reference by spaceborne sensors in low-Earth and geos…
Comment on egusphere-2023-1539 Open
Abstract. Absolute calibration of Earth observation sensors is key to ensuring long term stability and interoperability, essential for long term global climate records and forecasts. The Moon provides a photometrically stable calibration s…
The irradiance instrument subsystem (IRIS) on the airborne-lunar spectral irradiance (air-LUSI) instrument Open
The objective of the airborne lunar spectral irradiance (air-LUSI) project is to make low uncertainty, SI-traceable measurements of the LUSI in the visible to near-infrared region from an aircraft above most of the optically absorbing comp…
SI-traceable space-based climate observation system: a CEOS and GSICS Workshop. National Physical Laboratory, UK, 9-11 Sept 2019 Open
Laboratory in London, UK, 9-11 September 2019 and sponsored by the UK Space Agency.The workshop was organized under the auspices of the Global Space-based Inter-Calibration System (GSICS) and the Committee on Earth Observation Satellites -…
Acquisition of Moon Measurements by Earth Orbiting Sensors for Lunar Calibration Open
The reflected light from the Moon can be utilized as a reference for radiometric calibration by employing a model to generate reference values corresponding to the Moon observations made by instruments. Using a calibration target that is o…
Evaluation of air-LUSI Measurements to Advance Lunar Modeling and the ROLO Lunar Calibration Reference Open
The airborne Lunar Spectral Irradiance (air-LUSI) project is dedicated to acquiring high-accuracy, spectrally resolved measurements of the Moon from the NASA ER-2 high-altitude aircraft, flying above more than 90% of Earth's atmosphere. Th…
Measurements of Absolute, SI Traceable Lunar Irradiance with the Airborne LUnar Spectral Irradiance (air LUSI) Instrument Open
The Moon is a very useful calibration target for Earth-observing sensors in orbit because its surface is radiometrically stable and it has a radiant flux comparable to Earth scenes. To predict the lunar irradiance given an illumination and…
Air-LUSI: Supporting Advancement [STC1] of the Moon as a Reference for Earth Observations from Space Air-LUSI: Supporting Advancement of the Moon as a Reference for Earth Observations from Space Open
To monitor global environments from space, satellites must be calibrated accurately and consistently across time, missions and instruments.This requires the use of a stable, common reference that is continuously accessible to Earth observi…
Air-LUSI: Supporting Advancement [STC1] of the Moon as a Reference for Earth Observations from Space Air-LUSI: Supporting Advancement of the Moon as a Reference for Earth Observations from Space Open
To monitor global environments from space, satellites must be calibrated accurately and consistently across time, missions and instruments. This requires the use of a stable, common reference that is continuously accessible to Earth observ…
Trutinor: A Conceptual Study for a Next-Generation Earth Radiant Energy Instrument Open
Uninterrupted and overlapping satellite instrument measurements of Earth’s radiation budget from space are required to sufficiently monitor the planet’s changing climate, detect trends in key climate variables, constrain climate models, an…
ARCSTONE: Calibration of Lunar Spectral Reflectance from Space Open
Detecting and improving the scientific understanding of global trends in complex Earth systems, such as climate, increasingly depend on assimilating datasets from multiple instruments and platforms over decadal timescales. Calibration accu…
ARCSTONE: Calibration of Lunar Spectral Reflectance from Space Open
Detecting and improving the scientific understanding of global trends in complex Earth systems, such as climate, increasingly depends on assimilating datasets from multiple instruments and platforms over decadal timescales. Calibration acc…
The Moon as a Climate-Quality Radiometric Calibration Reference Open
On-orbit calibration requirements for a space-based climate observing system include long-term sensor response stability and reliable inter-calibration of multiple sensors, both contemporaneous and in succession. The difficulties with achi…
Ground and In-Flight Calibration of the OSIRIS-REx Camera Suite Open
The OSIRIS-REx Camera Suite (OCAMS) onboard the OSIRIS-REx spacecraft is used to study the shape and surface of the mission’s target, asteroid (101955) Bennu, in support of the selection of a sampling site. We present calibration methods a…
Calibration Acquisitions of the Moon by CLARREO Pathfinder Open
The Climate Absolute Radiance and Refractivity Observatory (CLARREO) is a Tier 1 mission recommended by the 2007 NRC Earth Science Decadal Survey. The mission's technical objectives are to acquire high-accuracy SI-traceable decadal length …
View article: Improved pointing information for SCIAMACHY from in-flight measurements of the viewing directions towards sun and moon
Improved pointing information for SCIAMACHY from in-flight measurements of the viewing directions towards sun and moon Open
The SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on Envisat (2002–2012) performed nadir, limb, solar/lunar occultation and various monitoring measurements. The pointing information of the instrument is …
View article: Improved pointing information for SCIAMACHY from in-flight measurements of the viewing directions towards sun and moon
Improved pointing information for SCIAMACHY from in-flight measurements of the viewing directions towards sun and moon Open
The SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on Envisat (2002–2012) performed nadir, limb, solar/lunar occultation and various monitoring measurements. The pointing information of the instrument is …
Using the Moon as a Common Reference for Inter-calibration Open
The usefulness of the Moon as a light source for on-orbit calibration derives in large part from the exceptional stability of the lunar surface reflectance, along with the absence of intervening atmosphere between the lunar source and a sp…