To give you the best available Arctic-wide answer to the above question, the MASIE (may-zee) project is produced in cooperation with the U.S. National Ice Center.
MASIE lets you view and download:
MASIE uses the most recent full day of data from the National Ice Center, obtained nightly. As is the rule with operational centers, gaps in production can occur without warning.
NSIDC has received support to develop MASIE but not to maintain MASIE. We are actively seeking support to maintain the Web site and products over the long term. If you find MASIE helpful, please let us know with a quick message to NSIDC User Services.