NOAA radar image of Arctic Ocean showing Greenland in the 3 o'clock and Siberia around 2. Each image is stitched from small areas and represents approximately 1 day of data. "Black diamonds" in images represent areas the sats didnt cover on that day.
Density plot of R2 lagged correlations between strength of daily av radar returns (proxy for sea ice density) across the same region 2010-present and NUFORC daily UFO sightings. The s/w checked correlations were statstically significant at 90+% confidence and showed a -ve beta -- i.e. less sea ice associated with higher UFO daily sightings across N Am some days later.