Landsat snow

Snow extent 1977 - 2014, New South Wales snowfields, Australia

Another way to look at snow cover is by satellite remote sensing. The longest and best-known series by far is that from the US Landsat satellites, now up to Landsat 8, launched in early 2013.

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More thoughts on global temperature

Having taken the trouble to plot all eight nine popular global temperature series together on one graph at monthly resolution — something the other seven billion of you don’t seem to have bothered with — it may be fair to spare us the indulgence of a few simple observations

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