High Resolution Global Contiguous SIF Estimates from OCO-2 SIF and MODIS, Version 2

Description

This dataset provides spatially-contiguous global mean daily solar-induced chlorophyll fluorescence (SIF) estimates at 0.05 degree (approximately 5 km at the equator) spatial and 16-day temporal resolution from September 2014 through July 2020. This product was derived from Orbiting Carbon Observatory-2 (OCO-2) SIF observations and produced by training an artificial neural network (ANN) on the native OCO-2 SIF observations and MODIS BRDF-corrected seven-band surface reflectance along OCO-2's orbits. The trained ANN model was then applied to predict mean daily SIF (mW/m2/nm/sr) in OCO-2's gap regions based on MODIS reflectance and landcover. This framework was stratified by biomes and 16-day time steps. This dataset's high resolution and global contiguous coverage will greatly enhance the synergy between satellite SIF and photosynthesis measured on the ground at consistent spatial scales. Potential applications of this dataset include advancing dynamic drought monitoring and mitigation, informing agricultural planning and yield estimation, and providing a benchmark for upcoming satellite missions with SIF capabilities at higher spatial resolutions.

Resources

Name Format Description Link
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DGlobal_SIF_OCO2_MODIS_1863%26ac%3Dtrue
5 https://daac.ornl.gov%2FSIF-ESDR%2Fguides%2FGlobal_SIF_OCO2_MODIS.html
5 https://doi.org%2F10.3334%2FORNLDAAC%2F1863
5 https://opendap.earthdata.nasa.gov%2F
5 https://data.ornldaac.earthdata.nasa.gov%2Fprotected%2Fbundle%2FGlobal_SIF_OCO2_MODIS_1863.zip
5 https://daac.ornl.gov%2FSIF-ESDR%2Fguides%2FGlobal_SIF_OCO2_MODIS_Fig1.png
5 https://science.jpl.nasa.gov%2Fprojects%2Fmeasures%2F
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fsif-esdr%2F17-MEASURES-0032%2FGlobal_SIF_OCO2_MODIS%2Fcomp%2FGlobal_SIF_OCO2_MODIS.pdf
5 https://thredds.daac.ornl.gov%2Fthredds%2Fcatalog%2Fornldaac%2F1863%2Fcatalog.html
5 https://search.earthdata.nasa.gov/search?q=Global_SIF_OCO2_MODIS_1863&ac=true
21 https://doi.org/10.3334/ORNLDAAC/1863
5 https://opendap.earthdata.nasa.gov/
57 Global_SIF_OCO2_MODIS_1863.zip https://data.ornldaac.earthdata.nasa.gov/protected/bundle/Global_SIF_OCO2_MODIS_1863.zip
34 Global_SIF_OCO2_MODIS_Fig1.png https://daac.ornl.gov/SIF-ESDR/guides/Global_SIF_OCO2_MODIS_Fig1.png
5 https://science.jpl.nasa.gov/projects/measures/
33 Global_SIF_OCO2_MODIS.pdf https://data.ornldaac.earthdata.nasa.gov/public/sif-esdr/17-MEASURES-0032/Global_SIF_OCO2_MODIS/comp/Global_SIF_OCO2_MODIS.pdf
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2207986708-ORNL_CLOUD.iso19115

Tags

  • earth-science-vegetation-biosphere-chlorophyll
  • earth-science-ecological-dynamics-biosphere-ecosystem-functions-primary-production
  • earth-science-vegetation-biosphere-solar-induced-fluorescence
  • earth-science-vegetation-biosphere-leaf-characteristics

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