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Field Intercomparison of Radiometers Used for Satellite Validation in the 400–900 nm Range

Viktor Vabson, Joel Kuusk, Ilmar Ansko, Riho Vendt, Krista Alikas, Kevin Ruddick, Ave Ansper, Mariano Bresciani, Henning Burmester, Maycira Costa, Davide D'Alimonte, Giorgio Dall'Olmo (+12 others)
2019 Remote Sensing  
, laboratory intercomparison using stable radiance and irradiance sources in a controlled environment; (3) outdoor, field intercomparison of natural radiation sources over a natural water surface.  ...  The calibration of radiometers and laboratory comparison experiment are presented in a related paper of the same journal issue.  ...  ., B.D.) are employees of radiometer manufacturers. Two authors (J.K., K.R.) are developing a new radiometer for commercialization in 2021.  ... 
doi:10.3390/rs11091129 fatcat:ubrhwyzr4ja2haohi4gshacsmy

Radiometric characterization of field radiometers in support of the 1997 Lunar Lake, Nevada, experiment to determine surface reflectance and top-of-atmosphere radiance

Steven W. Brown, B.Carol Johnson, Howard W. Yoon, James J. Butler, Robert A. Barnes, Stuart Biggar, Paul Spyak, Kurtis Thome, Edward Zalewski, Mark Helmlinger, Carol Bruegge, Stephen Schiller (+4 others)
2001 Remote Sensing of Environment  
In June 1997, an ensemble of field radiometers was deployed to validate the fundamental reflectance and radiance measurements of the Land Satellite (Landsat-5) Thematic Mapper (TM) and Satellite Pour l'Observation  ...  The results, presented in this work, showed variations in the relative stabilities of the field instruments, and demonstrate the need for in-depth characterization of field instruments for an accurate  ...  During the intercomparison, the transfer radiometers were also used to monitor the sphere stability. The field instruments are designed for measurements in remote environments.  ... 
doi:10.1016/s0034-4257(01)00215-2 fatcat:ro3gorxsczhotbkac3ceszagnu

Laboratory Intercomparison of Radiometers Used for Satellite Validation in the 400–900 nm Range

Viktor Vabson, Joel Kuusk, Ilmar Ansko, Riho Vendt, Krista Alikas, Kevin Ruddick, Ave Ansper, Mariano Bresciani, Henning Burmester, Maycira Costa, Davide D'Alimonte, Giorgio Dall'Olmo (+12 others)
2019 Remote Sensing  
intercomparison using stable radiance and irradiance sources in controlled environment; and 3) Outdoor intercomparison of natural radiation sources over terrestrial water surface.  ...  Reference Measurements for Satellite Ocean Color (FRM4SOC) May 8–13, 2017 at Tartu Observatory, Estonia.  ...  Two authors (R.V.D. and B.D.) are employees of radiometer manufacturers. Two authors (J.K. and K.R.) are developing a new radiometer for commercialization in 2021.  ... 
doi:10.3390/rs11091101 fatcat:sslxovsinbfideimgufficu5oi

Fiducial Reference Measurements for Satellite Ocean Colour (FRM4SOC)

Andrew Clive Banks, Riho Vendt, Krista Alikas, Agnieszka Bialek, Joel Kuusk, Christophe Lerebourg, Kevin Ruddick, Gavin Tilstone, Viktor Vabson, Craig Donlon, Tania Casal
2020 Remote Sensing  
that must be considered in the estimation of measurement uncertainty and guidelines for good practice; (4) A technical comparison of the main radiometers used globally for satellite ocean colour validation  ...  Two major international side-by-side field intercomparisons of multiple ocean colour radiometers, one on the Atlantic Meridional Transect (AMT) oceanographic cruise, and the other on the Acqua Alta oceanographic  ...  Antoine, all participants of the project events, and manufacturers of the ocean colour radiometers are kindly thanked for the valuable support and contribution to the project outcomes and this paper.  ... 
doi:10.3390/rs12081322 fatcat:ekotjth7hzbdnltsccwf3d2vma

Comparison of Above-Water Seabird and TriOS Radiometers Along an Atlantic Meridional Transect

Krista Alikas, Viktor Vabson, Ilmar Ansko, Gavin H. Tilstone, Giorgio Dall'Olmo, Francesco Nencioli, Riho Vendt, Craig Donlon, Tania Casal
2020 Remote Sensing  
The Fiducial Reference Measurements for Satellite Ocean Color (FRM4SOC) project has carried out a range of activities to evaluate and improve the state-of-the-art in ocean color radiometry.  ...  Consistency of in situ results with the available Sentinel-3A Ocean and Land Color Instrument (OLCI) data in the range from (400...560) nm was also satisfactory (-8% < Mean Percentage Difference (MPD)  ...  We thank Silvia Pardo of the Natural Environment Research Council Earth Observation Data Acquisition and Analysis Service (NEODAAS) for satellite imagery during the campaign and for producing Figure 2  ... 
doi:10.3390/rs12101669 fatcat:noc2wyieqfd7fkfp4epm53euba

Best Practice Guidelines for Pre-Launch Characterization and Calibration of Instruments for Passive Optical Remote Sensing

R U Datla, J P Rice, K R Lykke, B C Johnson, J J Butler, X Xiong
2011 Journal of Research of the National Institute of Standards and Technology  
Examples of best practice calibrations and intercomparisons to build SI (international System of Units) traceable uncertainty budget in the instrumentation used for preflight satellite sensor calibration  ...  The onboard calibrators such as blackbodies and the sensors such as spectral radiometers should be characterized and calibrated using SI traceable standards.  ...  range from 400°C to 900°C.  ... 
pmid:26989588 pmcid:PMC4550341 fatcat:drhej2ak2jcpzith53pq7z6wj4

Field Intercomparison of Radiometer Measurements for Ocean Colour Validation

Gavin Tilstone, Giorgio Dall'Olmo, Martin Hieronymi, Kevin Ruddick, Matthew Beck, Martin Ligi, Maycira Costa, Davide D'Alimonte, Vincenzo Vellucci, Dieter Vansteenwegen, Astrid Bracher, Sonja Wiegmann (+6 others)
2020 Remote Sensing  
measurements used for the validation of ocean colour products.  ...  For downwelling irradiance (), there was generally good agreement between sensors with differences of <6% for most of the sensors over the spectral range 400 nm–665 nm.  ...  Acknowledgments: We are grateful to Giuseppe Zibordi for his support in the concept of FRM4SOC, in facilitating the set-up at the AAOT and for use of AERONET-OC SeaPRiSM data.  ... 
doi:10.3390/rs12101587 fatcat:yb34eceu4feu3bwphwfuem5uiu

Radiometric measurement comparison using the Ocean Color Temperature Scanner (OCTS) visible and near infrared integrating sphere

B.C. Johnson, F. Sakuma, J.J. Butler, S.F. Biggar, J.W. Cooper, J. Ishida, K. Suzuki
1997 Journal of Research of the National Institute of Standards and Technology  
As a part of the pre-flight calibration and validation activities for the Ocean Color and Temperature Scanner (OCTS) and the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) ocean color satellite instruments  ...  Sciences Center (UA), and the National Research Laboratory of Metrology (NRLM) in Tsukuba, Japan used their portable radiometers to measure the spectral radiance of the OCTS visible and nearinfrared integrating  ...  Acknowledgments Operation of the intercomparison at NEC Corporation was made possible with the support of NASDA.  ... 
doi:10.6028/jres.102.043 pmid:27805113 pmcid:PMC4894588 fatcat:u7hdu7nlurdefmad2ldun4kcpe

Results from Verification of Reference Irradiance and Radiance Sources Laboratory Calibration Experiment Campaign

Agnieszka Białek, Teresa Goodman, Emma Woolliams, Johannes F. S. Brachmann, Thomas Schwarzmaier, Joel Kuusk, Ilmar Ansko, Viktor Vabson, Ian C. Lau, Christopher MacLellan, Sabine Marty, Michael Ondrusek (+10 others)
2020 Remote Sensing  
The spectral irradiance comparison included the measurements of the 1000 W tungsten halogen filament lamps in the spectral range of 350 nm900 nm in the pilot laboratory.  ...  The transfer radiometers have seven spectral bands covering the wavelength range from 400 nm–700 nm. The irradiance comparison results showed an agreement between all lamps within ±1.5%.  ...  Acknowledgments: Authors would like to thank Giuseppe Zibordi from JRC for provision of two transfer radiometers used in this comparison and acknowledge his contribution as a radiance comparison participant  ... 
doi:10.3390/rs12142220 fatcat:foh235jsrrazlfzwq4ed5ji22y

Advances in radiometry for ocean color

Steven W. Brown, B. Carol Johnson, William L. Barnes
2003 Earth Observing Systems VIII  
Measurements of down-welling spectral irradiance at the surface and at various depths are used by MOBY and other  ...  For quantitative studies of the ocean, derivation of the relationship between the optical properties and physically meaningful data products is critical.  ...  ACKNOWLEDGEMENTS We would like to acknowledge and thank the following scientists for their significant contributions to this work:  ... 
doi:10.1117/12.505765 fatcat:jsi3q53z3vh4fblkuh6ehc3gva

The Pan-and-Tilt Hyperspectral Radiometer System (PANTHYR) for Autonomous Satellite Validation Measurements—Prototype Design and Testing

Dieter Vansteenwegen, Kevin Ruddick, André Cattrijsse, Quinten Vanhellemont, Matthew Beck
2019 Remote Sensing  
bands (400900 nm).  ...  The system is suitable for deployment in diverse locations (including offshore platforms) for the validation of water reflectance derived from any satellite mission with visible and/or near-infrared spectral  ...  The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.  ... 
doi:10.3390/rs11111360 fatcat:j7fwp3kl2zazdf2ljn2ra2s2xy

An Example Crossover Experiment for Testing New Vicarious Calibration Techniques for Satellite Ocean Color Radiometry

Kenneth J. Voss, Scott McLean, Marlon Lewis, Carol Johnson, Stephanie Flora, Michael Feinholz, Mark Yarbrough, Charles Trees, Mike Twardowski, Dennis Clark
2010 Journal of Atmospheric and Oceanic Technology  
Vicarious calibration of ocean color satellites involves the use of accurate surface measurements of waterleaving radiance to update and improve the system calibration of ocean color satellite sensors.  ...  In the field, the sensors measuring the above-surface downwelling irradiance performed nearly as well as they had in the laboratory, with an average difference of ,2%.  ...  James Mueller for his help in interpretation and using his shadowing correction for the MOBY instrument.  ... 
doi:10.1175/2010jtecho737.1 fatcat:iwbt5g4isjdnxbzdudpkmx6lge

Airborne radiometric validation of the geostationary lightning mapper using the Fly's Eye GLM Simulator

2020 Journal of Applied Remote Sensing  
The Fly's Eye GLM Simulator (FEGS) is a multi-spectral array of radiometers designed to provide a validation dataset for the geostationary lightning mapper (GLM).  ...  The main component of FEGS is a 5 × 5 grid of radiometers, each with a square 18 deg field of view, that are sensitive to a 10-nm wide spectral band centered on 780 nm to observe a neutral atomic oxygen  ...  The version 2 FEGS dataset collected during the 2017 GOES-R Validation Flight Campaign, as well as the reprocessed GLM data can be found at the website for the Global Hydrology Resource Center: http://  ... 
doi:10.1117/1.jrs.14.044518 fatcat:gkulcupgnbb5fm2abzt5ry26ny

Reference solar irradiance spectra and consequences of their disparities in remote sensing of the ocean colour

P. Shanmugam, Y. H. Ahn
2007 Annales Geophysicae  
</strong> Satellite ocean colour missions require a standard extraterrestrial solar irradiance spectrum in the visible and near-infrared (NIR) for use in the process of radiometric calibration, atmospheric  ...  , minimal error range, intercomparison with other experiments and update of data.  ...  Gulev thanks two anonymous referees for their help in evaluating this paper.  ... 
doi:10.5194/angeo-25-1235-2007 fatcat:e6q6ouuyv5gvho2selw4xz6iua

A Review of Protocols for Fiducial Reference Measurements of WaterLeaving Radiance for Validation of Satellite Remote-Sensing Data over Water

Ruddick, Voss, Boss, Castagna, Frouin, Gilerson, Hieronymi, Johnson, Kuusk, Lee, Ondrusek, Vabson (+1 others)
2019 Remote Sensing  
This paper reviews the state of the art of protocols for measurement of waterleaving radiance in the context of fiducial reference measurements (FRM) of water reflectance for satellite validation.  ...  This review is based on practice and papers of the aquatic optics community for the validation of water reflectance estimated from satellite data but can be relevant also for other applications such as  ...  The considerations for measurement of L w given here should be valid also for the near ultraviolet (300 nm to 400 nm) and middle infrared (1400 nm to 3000 nm), although the importance of the various uncertainty  ... 
doi:10.3390/rs11192198 fatcat:jnnh4xgiavh5tph7nqspat7y5q
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