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nansencenter / DAPPER

Data Assimilation with Python: a Package for Experimental Research

Home Page:https://nansencenter.github.io/DAPPER

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Make "Persistence" da_method

patnr opened this issue · comments

commented

This should use the truth at the previous analysis time for the following forecast and analysis.

commented

This is a good idea to have such method, as a form of baseline for some application. How hard it would be to have the flexibility to add a covariable modulating the persistence? For example, if I have radiation data at 10h AM and want to "persist" the data to t+1h, I would be interested to multiply the last value by the theoretical clear sky values (e.g. I know there should be more radiation at 11h, given constant clouds composition and opacity).

So perhaps put simply, a form of "Smart Persistence" ?

I would like to take the time to congratulate you and the team on developing this package. We are looking at it for a research use in Hydrology.

commented

Closed by 5783ed2

Also made a method called PreProg.

I think you should be able to combine Persistence and PreProg somehow to get what you want (probably the easiest is simply to use them as inspiration for a new da_method class).

Thank you for the kind words.