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List of experiments for 49r1 reforecasts

Experiment name	ID	Model version	Horizontal resolution	tstep	Atmospheric forcing	Snow depth analysis	Soil moisture analysis	Start date	End date	Status
Open-loop (without data assimilation)	hwlo	48r1	TCo319	1200	ERA5	No	No	Sep 1968	Dec 2022	finished
	i09w	49r1 v4	TCo319	1200	ERA5	No	No	Sep 1968	Dec 2022	finished
	i0a0	49r1 v4	TCo199	1200	ERA5	No	No	Sep 1968	Dec 2022	finished
Offline land surface DA	hwlq	48r1	TCo319	1200	ERA5	Yes	Yes	Sep 1968	Dec 2022	finished
	i0iz	49r1 v4	TCo319	1200	ERA5	Yes	Yes	Sep 1968	Dec 2022	running
	i0j0	49r1 v4	TCo199	1200	ERA5	Yes	Yes	Sep 1968	Dec 2022	running

The 49r1v4 includes all the land surface model updates including new vegetation : CY49R1 v-versions
The tstep(=1200) is the same as the atmospheric model used for the extended-range and seasonal forecasts in the latest configurations.
The period from 1968 to 1969 : spin-up for the land surface model

Experiment name	ID	Model version	Horizontal resolution	tstep	Atmospheric forcing	Snow depth analysis	Soil moisture analysis	Start date	End date	Status
Open-loop	i0uq	49r1 v4	TCo319	1200	ERA5	No	No	Jan 1939	Dec 2023	running
Offline land surface DA	i0ur	49r1 v4	TCo319	1200	ERA5	Yes	Yes	Jan 1939	Dec 2023	running
Finite difference land surface DA	i0we	49r1 v4	TCo319	1200	ERA5	No	Yes	Jan 1939	Dec 2023	running

The only difference between i09w/i0iz and i0uq/i0ur is experiment period and initial conditions (retrieved from expver=4217).
The finite difference land surface DA relies on finite differences to derive the Jacobians in the SEKF.