Evaluation of the VIIRS Land algorithms at Land PEATE

Wolfe, Robert E.; Devadiga, Sadashiva; Ye, Gang; Masuoka, E.; Schweiss, R.J.

doi:10.1109/igarss.2010.5652831

Cited by 2 publications

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“…The CPM program was executed in near real time as a product generation executable (PGE) at the NASA SNPP VIIRS Land Product Evaluation and Testing Element (PEATE), which was part of the risk reduction in the SNPP mission [21,22]. The Land PEATE transitioned to a Land Science Investigator-led Processing System (SIPS) after 2014.…”

Section: Methodsmentioning

confidence: 99%

Ten Years of VIIRS On-Orbit Geolocation Calibration and Performance

et al. 2022

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The first innovative Visible Infrared Imaging Radiometer Suite (VIIRS) sensor aboard the Suomi National Polar-orbiting Partnership (SNPP) satellite has been in operation for 10 years since its launch on 28 October 2011. The second VIIRS sensor aboard the first Join Polar Satellite System (JPSS-1) satellite has been in operation for 4 years since its launch on 18 November 2017, which became NOAA-20. Well-geolocated and radiometrically calibrated Level-1 sensor data records (SDRs) from VIIRS are crucial to numerical weather prediction (NWP) and Level-2+ environmental data record (EDR) algorithms and products. The high quality of Level-2+ EDRs is a requirement for the continuity of NASA Earth science data records (ESDRs) and climate data records (CDRs), one of the two objectives of the SNPP mission and one of the three elements in the JPSS mission objective. The other objective of the SNPP mission is risk reduction for the follow-on JPSS missions. This paper summarizes the on-orbit geolocation calibration and validation (Cal/Val) activities for both VIIRS sensors onboard SNPP and NOAA-20 in the past 10 years. These activities include nominal geolocation Cal/Val activities, risk reduction activities, and improvements for the on-orbit VIIRS sensor operations. After these activities, sub-pixel geolocation accuracy is achieved. Nadir equivalent geolocation uncertainty is generally within 75 m (1-σ), or 20% imagery band pixels, in either the along-scan or along-track direction for both SNPP and NOAA-20 VIIRS sensors. The worst 16-day measured geolocation errors (radial, 3-σ) are 280 m and 267 m, respectively, in the latest SNPP and NOAA-20 VIIRS data collections, which are better than the required accuracy of 375 m (radial, 3-σ). The risk reduction activities also improved VIIRS builds for JPSS-3 and JPSS-4 satellites, and provide lessons learned for other VIIRS-like sensor builds.

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Section: Methodsmentioning

confidence: 99%

Ten Years of VIIRS On-Orbit Geolocation Calibration and Performance

et al. 2022

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“…In addition to NOAA CLASS, the VIIRS Land PEATE, which is collocated with the MODIS Land production facilities, has a number of capabilities to support land science users of VIIRS data and leverages NASA's experience in the production of global land measurements [ Masuoka et al ., ]. These include support for evaluation against MODIS science products, quality assessment and validation, and a test bed for algorithm changes [ Román et al ., ; Wolfe et al ., ]. In a number of cases, the NASA VIIRS land and cryosphere teams are developing and testing MODIS continuity or improved algorithms at the Land PEATE, as described above.…”

Section: Data Generation and Distribution Of Viirs Land And Cryosphermentioning

confidence: 99%

Land and cryosphere products from Suomi NPP VIIRS: Overview and status

et al. 2013

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[1] The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument was launched in October 2011 as part of the Suomi National Polar-Orbiting Partnership (S-NPP). The VIIRS instrument was designed to improve upon the capabilities of the operational Advanced Very High Resolution Radiometer and provide observation continuity with NASA’s Earth Observing System’s Moderate Resolution Imaging Spectroradiometer (MODIS). Since the VIIRS first-light images were received in November 2011, NASA- and NOAA-funded scientists have been working to evaluate the instrument performance and generate land and cryosphere products to meet the needs of the NOAA operational users and the NASA science community. NOAA’s focus has been on refining a suite of operational products known as Environmental Data Records (EDRs), which were developed according to project specifications under the National Polar-Orbiting Environmental Satellite System. The NASA S-NPP Science Team has focused on evaluating the EDRs for science use, developing and testing additional products to meet science data needs, and providing MODIS data product continuity. This paper presents to-date findings of the NASA Science Team’s evaluation of the VIIRS land and cryosphere EDRs, specifically Surface Reflectance, Land Surface Temperature, Surface Albedo, Vegetation Indices, Surface Type, Active Fires, Snow Cover, Ice Surface Temperature, and Sea Ice Characterization. The study concludes that, for MODIS data product continuity and earth system science, an enhanced suite of land and cryosphere products and associated data system capabilities are needed beyond the EDRs currently available from the VIIRS.

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Evaluation of the VIIRS Land algorithms at Land PEATE

Cited by 2 publications

References 5 publications

Ten Years of VIIRS On-Orbit Geolocation Calibration and Performance

Ten Years of VIIRS On-Orbit Geolocation Calibration and Performance

Land and cryosphere products from Suomi NPP VIIRS: Overview and status

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