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@@ -40,11 +40,114 @@ The dataset consists of 975 chips and we split the dataset based on years to cre
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  In this repo, we have used three years for training and one year as test.
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  # Dataset Creation:
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- The flux observation sites recorded in our csv file guide our HLS and MERRA-2 data preparation process. HLS data is preselected with a 25% maximum cloud threshold and 75% minimum spatial threshold. We note the lat/long of the flux stations and extract 50x50 size HLS chips around each station and retain scenes with less than 2% snow cover and less than 5% cloud cover. HLS reflectance is transformed by the scaling factor. We record the daily hourly mean of each abovementioned MERRA-2 data at each of the flux location sites. We then apply a quality check on GPP flux station readings and retain those that meet 60% quality threshold to create the final dataset by selecting corresponding input HLS and MERRA-2 data for these flux stations.
 
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  # Source data:
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  1. HLS Imagery is from V2.0 of HLS. A full description and access to HLS may be found at https://hls.gsfc.nasa.gov/ <br/>
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  2. MERRA-2 data is from V5.12.4. Full description and to the MERRA-2 datasets can be found at https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/data_access/ <br/>
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- 3. Eddy covariance data were obtained from the AmeriFlux FLUXNET and ICOS Warm Winter 2020 datasets. (List of eddy covariance flux sites used in the study can be found in the csv file).
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  # Citation
 
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  In this repo, we have used three years for training and one year as test.
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  # Dataset Creation:
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+ The flux observation sites guide our HLS and MERRA-2 data preparation process. HLS data is preselected with a 25% maximum cloud threshold and 75% minimum spatial threshold. We note the lat/long of the flux stations and extract 50x50 size HLS chips around each station and retain scenes with less than 2% snow cover and less than 5% cloud cover. HLS reflectance is transformed by the scaling factor. We record the daily hourly mean of each abovementioned MERRA-2 data at each of the flux location sites.
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+ We then apply a quality check on the daily GPP data and retain those with at least 60% of high quality hourly and half-hourly data for temporal aggregation. We further removed data with large negative GPP values (GPP <= -0.1gCm<sup>-2</sup>s<sup>-1</sup>) indicative of poor data quality. After matching the corresponding input HLS and MERRA-2 data for each GPP record, we removed instances that had large negative Enhanced Vegetation Index (EVI) values (EVI <= -0.1), indicative of cloud/snow impacts. EVI values were computed as the spatial average of the HLS chips.
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  # Source data:
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  1. HLS Imagery is from V2.0 of HLS. A full description and access to HLS may be found at https://hls.gsfc.nasa.gov/ <br/>
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  2. MERRA-2 data is from V5.12.4. Full description and to the MERRA-2 datasets can be found at https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/data_access/ <br/>
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+ 3. Eddy covariance data were obtained from the AmeriFlux FLUXNET (https://ameriflux.lbl.gov/data/data-policy/) and ICOS Warm Winter 2020 datasets (https://www.icos-cp.eu/data-products/2G60-ZHAK). (List of eddy covariance flux sites used in the study and the respective references can be found below).
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+ | Site ID | IGBP | Citation |
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+ |---------|------|----------|
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+ | BE-Lcr | DBF | (Warm Winter 2020 Team, 2022) |
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+ | CA-DB2 | WET | (Knox, 2022) |
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+ | DK-Gds | ENF | (Warm Winter 2020 Team, 2022) |
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+ | FI-Ken | ENF | (Warm Winter 2020 Team, 2022) |
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+ | FI-Qvd | CRO | (Warm Winter 2020 Team, 2022) |
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+ | FR-Tou | GRA | (Warm Winter 2020 Team, 2022) |
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+ | GL-Dsk | OSH | (Warm Winter 2020 Team, 2022) |
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+ | IE-Cra | WET | (Warm Winter 2020 Team, 2022) |
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+ | IT-BFt | DBF | (Warm Winter 2020 Team, 2022) |
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+ | PE-QFR | WET | (Griffis and Roman, 2021) |
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+ | US-BZo | WET | (Euskirchen, 2022) |
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+ | US-CS1 | CRO | (Desai, 2022a) |
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+ | US-CS2 | ENF | (Desai, 2022b) |
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+ | US-CS3 | CRO | (Desai, 2022c) |
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+ | US-CS4 | CRO | (Desai, 2022d) |
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+ | US-DFC | CRO | (Duff and Desai, 2023) |
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+ | US-DS3 | CRO | (Desai, 2022c) |
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+ | US-HB1 | WET | (Forsythe et al., 2021) |
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+ | US-HB2 | ENF | (Forsythe et al., 2023a) |
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+ | US-HB3 | ENF | (Forsythe et al., 2023b) |
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+ | US-Mo2 | GRA | (Schreiner-McGraw, 2023) |
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+ | US-RGA | CRO | (Schuppenhauer et al., 2023b) |
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+ | US-RGB | CRO | (Schuppenhauer et al., 2023a) |
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+ | US-RGo | CRO | (Schuppenhauer et al., 2023c) |
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+ | US-Snf | GRA | (Kusak et al., 2022) |
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+ | US-Tw5 | WET | (Valach et al., 2022) |
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+ | US-xAB | ENF | (NEON (National Ecological Observatory Network), 2023a) |
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+ | US-xBA | WET | (NEON (National Ecological Observatory Network), 2023b) |
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+ | US-xBL | DBF | (NEON (National Ecological Observatory Network), 2023c) |
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+ | US-xBN | ENF | (NEON (National Ecological Observatory Network), 2023d) |
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+ | US-xDJ | ENF | (NEON (National Ecological Observatory Network), 2023e) |
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+ | US-xJR | OSH | (NEON (National Ecological Observatory Network), 2023f) |
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+ | US-xSC | DBF | (NEON (National Ecological Observatory Network), 2023g) |
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+ | US-xSJ | SAV | (NEON (National Ecological Observatory Network), 2023h) |
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+ | US-xSL | CRO | (NEON (National Ecological Observatory Network), 2023i) |
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+ | US-xWD | GRA | (NEON (National Ecological Observatory Network), 2023j) |
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+ | US-xYE | ENF | (NEON (National Ecological Observatory Network), 2023k) |
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+
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+ # Flux Dataset References
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+ 1. **Desai, A.**: *AmeriFlux FLUXNET-1F US-CS1 Central Sands Irrigated Agricultural Field*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Univ. of Wisconsin, Madison, WI (United States), [https://doi.org/10.17190/AMF/1881576](https://doi.org/10.17190/AMF/1881576), 2022a.
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+ 2. **Desai, A.**: *AmeriFlux FLUXNET-1F US-CS2 Tri county school Pine Forest*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Univ. of Wisconsin, Madison, WI (United States), [https://doi.org/10.17190/AMF/1881577](https://doi.org/10.17190/AMF/1881577), 2022b.
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+ 3. **Desai, A.**: *AmeriFlux FLUXNET-1F US-CS3 Central Sands Irrigated Agricultural Field*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Univ. of Wisconsin, Madison, WI (United States), [https://doi.org/10.17190/AMF/1881578](https://doi.org/10.17190/AMF/1881578), 2022c.
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+ 4. **Desai, A.**: *AmeriFlux FLUXNET-1F US-CS4 Central Sands Irrigated Agricultural Field*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Univ. of Wisconsin, Madison, WI (United States), [https://doi.org/10.17190/AMF/1881579](https://doi.org/10.17190/AMF/1881579), 2022d.
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+ 5. **Duff, A. and Desai, A.**: *AmeriFlux FLUXNET-1F US-DFC US Dairy Forage Research Center, Prairie du Sac*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; University of Wisconsin Madison; US Dairy Forage Research Center, [https://doi.org/10.17190/AMF/2006975](https://doi.org/10.17190/AMF/2006975), 2023.
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+ 6. **Euskirchen, E.**: *AmeriFlux FLUXNET-1F US-BZo Bonanza Creek Old Thermokarst Bog*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; University of Alaska Fairbanks, Institute of Arctic Biology, [https://doi.org/10.17190/AMF/1881571](https://doi.org/10.17190/AMF/1881571), 2022.
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+ 7. **Forsythe, J. D., Kline, M. A., and O’Halloran, T. L.**: *AmeriFlux FLUXNET-1F US-HB1 North Inlet Crab Haul Creek*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Clemson Univ., SC (United States), [https://doi.org/10.17190/AMF/1832160](https://doi.org/10.17190/AMF/1832160), 2021.
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+ 8. **Forsythe, J. D., Kline, M. A., and O’Halloran, T. L.**: *AmeriFlux FLUXNET-1F US-HB2 Hobcaw Barony Mature Longleaf Pine*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; Clemson Univ., SC (United States), [https://doi.org/10.17190/AMF/2229377](https://doi.org/10.17190/AMF/2229377), 2023a.
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+ 9. **Forsythe, J. D., Kline, M. A., and O’Halloran, T. L.**: *AmeriFlux FLUXNET-1F US-HB3 Hobcaw Barony Longleaf Pine Restoration*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; Clemson Univ., SC (United States), [https://doi.org/10.17190/AMF/2229378](https://doi.org/10.17190/AMF/2229378), 2023b.
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+ 10. **Goldstein, A.**: *FLUXNET2015 US-Blo Blodgett Forest*, [https://doi.org/10.18140/FLX/1440068](https://doi.org/10.18140/FLX/1440068), 2016.
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+ 11. **Griffis, T. and Roman, T.**: *AmeriFlux FLUXNET-1F PE-QFR Quistococha Forest Reserve*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Univ. of Minnesota, Minneapolis, MN (United States); USDA-Forest Service, [https://doi.org/10.17190/AMF/1832157](https://doi.org/10.17190/AMF/1832157), 2021.
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+ 12. **Knox, S.**: *AmeriFlux FLUXNET-1F CA-DB2 Delta Burns Bog 2*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; The University of British Columbia, [https://doi.org/10.17190/AMF/1881564](https://doi.org/10.17190/AMF/1881564), 2022.
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+ 13. **Kusak, K., Sanchez, C. R., Szutu, D., and Baldocchi, D.**: *AmeriFlux FLUXNET-1F US-Snf Sherman Barn*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Univ. of California, Berkeley, CA (United States), [https://doi.org/10.17190/AMF/1854371](https://doi.org/10.17190/AMF/1854371), 2022.
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+ 14. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xAB NEON Abby Road (ABBY)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229403](https://doi.org/10.17190/AMF/2229403), 2023a.
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+ 15. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xBA NEON Barrow Environmental Observatory (BARR)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229404](https://doi.org/10.17190/AMF/2229404), 2023b.
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+ 16. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xBL NEON Blandy Experimental Farm (BLAN)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229405](https://doi.org/10.17190/AMF/2229405), 2023c.
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+ 17. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xBN NEON Caribou Creek - Poker Flats Watershed (BONA)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229406](https://doi.org/10.17190/AMF/2229406), 2023d.
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+ 18. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xDJ NEON Delta Junction (DEJU)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229407](https://doi.org/10.17190/AMF/2229407), 2023e.
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+ 19. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xJR NEON Jornada LTER (JORN)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229408](https://doi.org/10.17190/AMF/2229408), 2023f.
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+ 20. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xSC NEON Smithsonian Conservation Biology Institute (SCBI)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229409](https://doi.org/10.17190/AMF/2229409), 2023g.
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+ 21. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xSJ NEON San Joaquin Experimental Range (SJER)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229410](https://doi.org/10.17190/AMF/2229410), 2023h.
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+ 22. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xSL NEON North Sterling, CO (STER)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229411](https://doi.org/10.17190/AMF/2229411), 2023i.
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+ 23. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xWD NEON Woodworth (WOOD)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/2229412](https://doi.org/10.17190/AMF/2229412), 2023j.
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+ 24. **NEON (National Ecological Observatory Network)**: *AmeriFlux FLUXNET-1F US-xYE NEON Yellowstone Northern Range (Frog Rock) (YELL)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; National Ecological Observatory Network, [https://doi.org/10.17190/AMF/1985459](https://doi.org/10.17190/AMF/1985459), 2023k.
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+ 25. **Schreiner-McGraw, A.**: *AmeriFlux FLUXNET-1F US-Mo2 LTAR CMRB Tucker Prairie (CMRB TP)*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; USDA Agricultural Research Service, Cropping Systems & Water Quality Research Unit, [https://doi.org/10.17190/AMF/2229383](https://doi.org/10.17190/AMF/2229383), 2023.
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+ 26. **Schuppenhauer, M., Biraud, S. C., and Chan, S.**: *AmeriFlux FLUXNET-1F US-RGB Butte County Rice Farm*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; Arva Intelligence Corp, [https://doi.org/10.17190/AMF/2204874](https://doi.org/10.17190/AMF/2204874), 2023a.
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+ 27. **Schuppenhauer, M. R., Biraud, S. C., and Chan, S.**: *AmeriFlux FLUXNET-1F US-RGA Arkansas Corn Farm*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; Arva Intelligence Corp., [https://doi.org/10.17190/AMF/2204873](https://doi.org/10.17190/AMF/2204873), 2023b.
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+ 28. **Schuppenhauer, M. R., Biraud, S. C., and Chan, S.**: *AmeriFlux FLUXNET-1F US-RGo Glenn County Organic Rice Farm*, Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). AmeriFlux; Arva Intelligence Corp., [https://doi.org/10.17190/AMF/2204875](https://doi.org/10.17190/AMF/2204875), 2023c.
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+ 29. **Valach, A., Kasak, K., Szutu, D., Verfaillie, J., and Baldocchi, D.**: *AmeriFlux FLUXNET-1F US-Tw5 East Pond Wetland*, Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). AmeriFlux; Univ. of California, Berkeley, CA (United States), [https://doi.org/10.17190/AMF/1881595](https://doi.org/10.17190/AMF/1881595), 2022.
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+ 30. **Warm Winter 2020 Team**: *Warm Winter 2020 ecosystem eddy covariance flux product for 73 stations in FLUXNET-Archive format—release 2022-1 (Version 1.0)*, [https://doi.org/10.18160/2G60-ZHAK](https://doi.org/10.18160/2G60-ZHAK), 2022.
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  # Citation