Sea ice concentration maps April 13th

SIC maps April 13th

• March 1st, 7th, 13th, 19th, 25th
• April 1st, 7th, 13th, 19th, 25th
• May 1st, 7th, 13th, 19th, 25th
• June 1st, 7th, 13th, 19th, 25th
• July 1st, 7th, 13th, 19th, 25th
• August 1st, 7th, 13th, 19th, 25th
• September 1st, 7th, 13th, 19th, 25th
• October 1st, 7th, 13th, 19th, 25th
• November 1st, 7th, 13th, 19th, 25th