We all know that the ice is melting and that this is caused by global warming, which among other things is going to make human life impossible within a few years unless we all drive around in Fiat Pandas.
But looking at the graph above, I really can't see any significant trend. Can you? Obviously I'm not a climate scientist, but I can read graphs.
And here is an admission that sea ice was underestimated by 1/2 million square km. Well, actually it really sounds like they are trying to downplay it. After all, the ice is melting, whether our sensors show it or not. So what do the data matter?
On February 18, we reported that the F15 sensor malfunction started out having a negligible impact on computed ice extent, which gradually increased as the sensor degraded further. At the end of January, the F15 sensor underestimated ice extent by 50,000 square kilometers (19,300 square miles) compared to F13. That is still within the margin of error for daily data. By mid-February, the difference had grown to 500,000 square kilometers (193,000 square miles), which is outside of expected error. However, that amount represents less than 4% of Arctic sea ice extent at this time of year. When the computed daily extent dropped sharply on February 16, the sensor failure became obvious.
Hat Tip: A loyal reader