@phil_browne Good morning Phil.

This method is used only for OSI-450-a, the v3 Climate Data Record (1978-2020).

We don't need it for the associated Interim CDR OSI-430-a (2021-onwards) because the ICDR uses #SSMIS only, and those missions have a small polar observation hole: it does not matter how we interpolate.

The new method was not used in our "v2" data (OSI-450 and OSI-430-b): we were using the isotropic interpolation even for the #SMMR period (which our users complained about).

@kevpluck @ZLabe @SigneAaboe @AlaskaWx Some #SSMIS data eventually came during the (European) night and since there are three satellites, it seems we could produce nominal #SeaIce products (on time, no data hole).

We are still not receiving data from the DMSP #satellites F16, F17, and F18.

These three satellites carry the #SSMIS instrument that #OSISAF and #NSIDC use for their #SeaIce climate monitoring.

The issue is apparently related to power outage on the ground segment: https://www.ospo.noaa.gov/data/messages/2023/01/MSG_20230110_1144.html

Expect delays and/or data gaps in some upcoming #SeaIce products.

@kevpluck @AlaskaWx Good.

I think #nsidc has some temporal interpolation going (we do that at #osisaf).

We did not manage to retrieve #SSMIS data for the 9th (lost for good?). As a result, our sea-ice index shows an "interpolation" flag for that day.

Wooohoooo ! We are now receiving data from the #SSMIS F16, F17, and F18 satellite missions !

#osisaf and #nsidc will thus soon resume their #seaice extent processing.

@AlaskaWx @zlabe @kevpluck

Update on the #SSMIS data shortage (that prevents us to update our #osisaf #seaice extent timeseries) ...

"Problem with planned maintenance caused a rack to go down affecting systems in it. Technicians working to bring rack up and recover data."

So still #nodata, but confirmation that the satellites are doing fine.

Oh well... we'll wait.