hindcasts

Note

The hindcasts source is currently using the mars source internally. This will be changed in the future.

Hindcasts data, also known as reforecasts, are unique because they are run for a specific day of year (such as 1 January or 11 June) for multiple years. So, for a given reference date like 2022-05-12, we can have hindcasts for 2001-05-12, 2002-05-12, 2003-05-12, and so on. This is useful in many cases. For more details, please refer to this ECMWF documentation.

The hindcasts source has a special argument called reference_year, which represents the year of the reference date. Based on the requested valid datetime and on the reference_year, the hindcasts source will calculate the hdate and date and time appropriately.

For example, if the reference_year is 2022, then the data for 2002-05-12 will use data with hdate=2002-05-12 and date=2022-05-12.

---
input:
   hincasts:

Using step in the hindcasts source is implemented and works as expected.