R CMD check --as-cran highlights (NOTE) the URL in DESCRIPTION: https://www.ncei.noaa.gov/access/services/data/v1. The URL is correct, but the API returns a 400 error if the whole API call is not specified (i.e. including query parameters).
- GHCN = Global Historical Climatology Network (https://www.ncei.noaa.gov/products/land-based-station)
- GHCNd = Global Historical Climatology Network daily (https://www.ncei.noaa.gov/products/land-based-station/global-historical-climatology-network-daily)