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Update: May 26 2009 The daily image update has been temporarily suspended because of large areas of missing data in the past week. NSIDC currently gets its data from the SSM/I sensor on the DMSP F13 satellite, which is nearing the end of its operational life and experiencing intermittent problems.
NSIDC has been working on a transition to a newer sensor on the F17 satellite for several months. At this time, we have more than a year of data from F17, which we are using to intercalibrate with F13 data. The F17 data are not yet available for near-real-time updates. We will resume posting daily updates as soon as possible, either from F13, if the present problem is resolved, or from F17, when the transition is complete.
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F 17l
Makes you wonder ( once again ) how long this has been going on and if the anomalously low readings we’ve seen for awhile are due to a slow sensor degradation.
Time will tell.
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