Authors / CoAuthors
Byrne, G. | Broomhall, M. | Andrew Walsh | Hay, E. | Thankappan, M. | Li, F. | Garcia, R | M'cAtee, B | Anstee, J | Kerrisk, G | Drayson, N | Barnetson, J
Abstract
<div>In recent years Geoscience Australia has undertaken a successful continental scale validation program, targeting Landsat and Sentinel analysis ready data surface reflectance products. The field validation model used for this program successfully built on earlier studies and the measurement uncertainties associated with these protocols have been quantified and published. As a consequence, the Australian earth observation community was well-placed to respond to the United States Geological Survey (USGS) call for collaborators with the 2021 Landsat 8 (L8) and Landsat 9 (L9) 6 underfly. Despite a number of challenges, seven validation datasets were captured across five sites. As there was only a single 100% overlap transit across Australia and with the country in the midst of a strong La Niña climate cycle, it was decided to deploy teams to the two available overpasses with only 15% side lap. The validation sites encompassed rangelands, chenopod scrublands and a large inland lake. Apart from instrument problems at one site, good weather enabled the capture of high quality field data allowing for meaningful comparisons between the radiometric performance of L8 and L9, as well as the USGS and Australian Landsat analysis ready data processing models. Duplicate (cross calibration) spectral sampling at different sites provides evidence of the field protocol reliability, while the off-nadir view of L9 over the water site has been used to better compare the performance of different water and atmospheric correction (ATCOR) processing models. </div> <b>Citation: </b>Byrne, G.; Broomhall, M.; Walsh, A.J.; Thankappan, M.; Hay, E.; Li, F.; McAtee, B.; Garcia, R.; Anstee, J.; Kerrisk, G.; et al. Validating Digital Earth Australia NBART for the Landsat 9 Underfly of Landsat 8. <i>Remote Sens.</i> <b>2024</b>, 16, 1233. https://doi.org/10.3390/rs16071233
Product Type
document
eCat Id
148699
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
- ( Project )
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- DEA – Digital Earth Australia
- ( Project )
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- Analysis Ready Data
- ( Project )
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- Earth observation
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- field spectrometry
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- Validation
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- landsat 8 9 underfly
- theme.ANZRC Fields of Research.rdf
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- ENVIRONMENTAL SCIENCES
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- Published_External
Publication Date
2024-08-02T04:08:35
Creation Date
2023-08-21T14:00:00
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Status
completed
Purpose
Paper summarises Geoscience Australia' contribution and results from participating in the international program of vicarious Landsat 8 and Landsat 9 underfly to special edition of Special Issue "Landsat 9 Pre-launch, Commissioning, and Early On-Orbit Imaging Performance"
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notPlanned
Topic Category
geoscientificInformation
Series Information
Remote Sensing Volume 16, Issue 7, 1233 2024
Lineage
Manuscript to be submitted to Remote Sensing Journal
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Extents
[-54.75, -9.2402, 112.92, 159.11]
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