Overview
| DOI | https://doi.org/10.3334/ORNLDAAC/1863 |
|---|---|
| Version | 2 |
| Project | |
| Published | 2021-08-13 |
| Usage | 1574 downloads |
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.
Science Keywords
- BIOSPHERE
- VEGETATION
- SOLAR INDUCED FLUORESCENCE
- BIOSPHERE
- VEGETATION
- CHLOROPHYLL
- BIOSPHERE
- ECOLOGICAL DYNAMICS
- ECOSYSTEM FUNCTIONS
- PRIMARY PRODUCTION
- BIOSPHERE
- VEGETATION
- LEAF CHARACTERISTICS
Data Use and Citation
This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy. See our Data Use and Citation Policy for more information.
Data Files
Sign in to download files.
Companion Files
Sign in to download files.
Dataset Companion Files
Dataset has 1 companion files.
- Global_SIF_OCO2_MODIS.pdf
Advanced Data Access through THREDDS Data Server
THREDDS Data Access: High Resolution Global Contiguous SIF Estimates from OCO-2 SIF and MODIS, Version 2 THREDDS Data Access.
See our THREDDS Data Server Catalog Service page for more information.
Additional Resources
| Type | Title |
|---|---|
| Code | Spatial and Temporal Subsetting of Gridded SIF Data |
Version History
| Version | Dataset Title | Published |
|---|---|---|
| 1 | High Resolution Global Contiguous SIF Estimates Derived from OCO-2 SIF and MODIS | 2019-09-09 |
| 2 | High Resolution Global Contiguous SIF Estimates from OCO-2 SIF and MODIS, Version 2 | 2021-08-13 |