February 21, 2018
Dennis Helder, ECCOE Director, [email protected] Morfitt, Asst. ECCOE Director, [email protected]
EROS Cal/Val Center of Excellenceand Landsat/Sentinel 2 Interoperability
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Outline• What is ECCOE?• The ECCOE CalVal Workshop• Landsat 8 and Sentinel 2 Interoperability• Recommendations
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ECCOE Vision• The EROS Calibration Center of Excellence (ECCOE) is
recognized nationally and internationally as a leading organization for effectively improving the accuracy, precision, and efficiency of radiometric, geometric, and spatial characterization, calibration, and cross-calibration of optical remote sensing systems to achieve the highest degree of interoperability of remote sensing data products."
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ECCOE Mission• Develop advanced methods to perform radiometric/geometric/spatial
characterization and calibration of optical remote sensing systems to improve the accuracy and precision of all derived data products.
• Develop new and improved methods for the cross-calibration of optical remote sensing systems for continuous improvement of the interoperability of remote sensing data products.
• Provide the expertise and advocacy necessary for the acquisition of new measurements that continue to improve optical remote sensing data quality, coverage, and expanded usefulness for science applications.
• Develop mutually beneficial partnerships within USGS/DOI, across other government agencies, and throughout the industry.
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ECCOE Structure – Current
DatePresented By:
NamePosition, OrganizationEmail, Phone #
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CalVal Workshop—Panel and Audience
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S2 inter-sensors comparison• Focus on PICS method: S2A, S2B, LS8 inter-comparison
• Same spectral shapes of calibration results for MSI-A & MSI-B (except B02 band : Spectral response impact is under investigation)
• Good consistency in a range of 1-2% between OLI & MSI (except for B01 band)
0.900.920.940.960.981.001.021.041.061.081.10
400 500 600 700 800 900
TOA-
Sat
/TO
A-si
m
refle
ctan
ce (
dl)
Wavelength (nm)
MSI_A MSI_B OLI
Borrowed from Bruno Lafrance
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APICS Results—Graphs
• Borrowed from Ron Morfitt• Who borrowed it from Dennis Helder• Who borrowed it from Morakot Kaewmanee
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Libya-4 PICS Temporal Trend
• Borrowed from Ron Morfitt• Who borrowed it from Dennis Helder• Who borrowed it from Morakot Kaewmanee
Grassland
Alfalfa+Sentinel-2Landsat-8
Harmonized Landsat / Sentinel-2 ProductsLaramie County, WY
ND
VI
Day of Year
mow
ing
3km
May 4, 2016 (S2) Aug 8 (L8) Aug 17 (L8) Sep 1 (S2) Oct 20 (L8)
0.1 NDVI 0.9
Seasonal phenology (greening) for natural grassland (blue line) and irrigated alfalfa fields (red line) near Cheyenne Wyoming observed from Harmonized Landsat/Sentinel-2 data products. The high temporal density of observations allows individual mowing events to be detected within alfalfa fields. HLS Products available from https://hls.gsfc.nasa.gov
Borrowed from Jeff Masek
Sentinel-2A
2000 x 2000 30m pixels
Zambia,CopperbeltProvence
2190 nm1610 nm865 nm
Day 214 2016
Borrowed from David Roy
Landsat 8 collection 1
2000 x 2000 30m pixels
Zambia,CopperbeltProvence
Day 219 2016
2200 nm1600 nm865 nm
Borrowed from David Roy
How did we get there ? Solving sensor inter-operability issues• spatial resolution selection & reprojection and tiling into a
common gridded system
• dealing with misregistration issues
• atmospheric correction using a common radiative transfer code and atmospheric characterization
• nadir BRDF-adjusted reflectance (NBAR) generation
• between sensor surface NBAR calibration
Borrowed from David Roy
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ECCOE Goals—Workshop Recommendations
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ECCOE Goals—Workshop Recommendations
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ECCOE Goals—Workshop Recommendations
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Follow-on Activities• ECCOE Workshop paper submission to RSE• Participation by ESA personnel in Dec 2017 Landsat
CalVal TIM• Participation by USGS ECCOE/NASA personnel at
Sentinel 2 Validation Team meeting in Jan 2018
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THANKS!
