Thanks for your analysis. Your citations point out the inaccuracy of the older systems, such as being unable to distinguish clouds from ice. I don't want to m

Thanks for your analysis. Your citations point out the inaccuracy of the older systems, such as being unable to distinguish clouds from ice. I don't want to make any assumptions about methodology, but if the measurements are already showing low sea ice, and they cannot distinguish ice from clouds, perhaps the actual sea ice levels were even lower than claimed in the paper. There's plenty of non-satellite data out there (in the IPCC reports and elsewhere) that also show a dramatic reduction in antarctic sea ice from 1950 to 1968. All the available data shows 1979 as the coldest year and a peak for sea ice, so using that year as a baseline for comparison with today's levels can result in a misleading assumption that sea ice levels are decreasing, when they may actually be "normal" right now.