Improve the Utility of ERA5-Land Data at AmeriFlux Site Locations R package ERA5Flux version 1.0.0 Collection of tools useful for workflows involving ERA5-Land and AmeriFlux data. Includes functions for downloading ERA5-Land data based on AmeriFlux sites, formatting the downloaded data to match AmeriFlux standards, merging both datasets together to ensure consistent timestamps, and blending them to create a single gap-filled time series. For more details, visit the Climate Data Store's catalogue entry for ERA5-Land at <https://cds.climate.copernicus.eu/datasets/reanalysis-era5-land> and the AmeriFlux homepage at <https://ameriflux.lbl.gov>. Software Imports: curl, dplyr, ecmwfr, lubridate, lutz, ncdf4, purrr, readr, readxl, stats, terra Suggests: knitr, rmarkdown, sf Angel Chen <angel777chen@gmail.com> Comprehensive R Archive Network (CRAN) Angel Chen [aut, cre] (angelchen7.github.io), Sam Jurado [aut] (ORCID: <https://orcid.org/0009-0005-1902-4066>), David E Reed [aut] (ORCID: <https://orcid.org/0000-0002-8892-1423>), Ammara Talib [aut] (ORCID: <https://orcid.org/0000-0003-3259-0220>), Junna Wang [aut] (ORCID: <https://orcid.org/0000-0003-3885-846X>), Boya Zhang [aut] (ORCID: <https://orcid.org/0000-0002-6860-2054>), Sparkle L Malone [aut] (ORCID: <https://orcid.org/0000-0001-9034-1076>), National Science Foundation [fnd] (NSF 2047687), Yale School of the Environment [fnd], Yale Center for Natural Carbon Capture [fnd], Malone Disturbance Ecology Lab [cph] MIT + file LICENSE (https://CRAN.R-project.org/package=ERA5Flux/LICENSE) 2026-10-20 application/tgz https://CRAN.R-project.org/package=ERA5Flux doi:10.32614/CRAN.package.ERA5Flux