Release notes

This page provides release notes for the Contrails API. You can subscribe to announcements to be notified of upcoming changes.

2025-10-24

  • Launched /v2/attributions:batchGet to trusted testers. This method gets contrail attributions for all specified flights.

2025-08-28

  • The /v2/grids attribute forecast_reference_time now only changes when the underlying weather forecast has changed, every 6 hours. This makes it easier to detect when the forecast has been updated. The effective forecasting frequency did not change.

2025-07-22

  • Extended the /v2/grids response to include a data variable attribute applied_erf_over_rf_ratio with the applied ERF/RF ratio. For example, the expected_effective_energy_forcing uses a ratio of 0.42. The underlying data did not change.

2025-07-16

  • Extended /v2/grids to support ?data=expected_effective_energy_forcing to read the contrail forecast in J/m.

2025-03-31

  • Launched /v2/grids.
  • Launched /v2/regions.
  • Deprecated the /v1/ API.