Aerial photo sampler

 

 

 
 
                                          

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May 17 May 20 June 11 June 15 June 22
June 30 July 8 July 15 July 25 Aug 7
  Aug 22 Sept 11 Oct 4 .

May 17: Snow-covered ice, leads freezing.
May 20: Snow-covered ice, leads freezing.
June 11: Ponds just beginning to form.
June 15: Ponds are developing.
June 22: Great increase in pond fraction.
June 30: Ponds continue to develop.
July 8: Ponds have formed distinct shapes.
July 15: Ponds are spreading.
July 25: Continued increase in ponds
August 7: Divergence, open water increases.
August 22: Many ponds have melted through.
September 11: Freezeup has begun.
October 4: Snow covered, leads freezing.