NASA Doesn’t Know About Their Own Satellites

NASA says satellite observations of sea ice began in 1979, and appear to be unaware of NASA Nimbus satellites which observed sea ice since the 1960s.

Arctic Sea Ice Minimum Extent | Vital Signs – Climate Change: Vital Signs of the Planet

“THE VARIATIONS of the Arctic sea ice have attracted much interest in recent years, both because the changes during this century have been big and because the era of satellite observations and transpolar flying has made it possible to keep the ice under continual survey.”

Arctic Ice, Atmospheric Circulation and World Climate

National Geographic November 1976

National Geographic Magazine Archive

“in August 1966 the maximum sea ice extent fell to 15.9×10 km ± 0.3×10 km . This is more than 1.5×10 km below the passive microwave record of 17.5×10 km set in September of 1986. This variation between 1964 and 1966 represents a change of maximum sea ice of over 3×10 km in just two years”

Anomalous Variability in Antarctic Sea Ice Extents During the 1960s

“The American Navy Joint Ice Center has produced weekly charts which have been digitised by NOAA ….. Since about 1976 the areal extent of sea-ice in the Northern Hemisphere has varied about a constant climatological level but in 1972-1975 sea-ice extent was significantly less.