name: recent-global-tracks
sources:
  - name: tracks
    dataset: noaa:ibtracs
    # One whole file: the last three seasons and the current one, every basin.
    # IBTrACS has no query interface, so dates and geographic filters are
    # rejected; filter the parsed table locally. The file is rebuilt in place
    # as agencies deliver best tracks, so the lockfile's checksum is the pin.
    params:
      subset: last3years