It now seems pretty certain 2010 will outpace 1998, which currently ties for fourth hottest year in the NASA dataset (though it is technically described by NASA folks as tied for the second hottest year with 2005 and 2007).
Outpacing 2005, the hottest year on record, will be closer. In NASA’s surface-based dataset, we are unlikely to set the record monthly temperatures for the rest of this year; last month wasn’t close to the hottest October for NASA, though it was third warmest. We have entered a moderate to strong La Niña, which NOAA says is “expected to last at least through the Northern Hemisphere winter 2010-11.” That said, as you can see, the October anomaly (deviation from the 1951-1980 average) was higher than September, in spite of the La Niña.
Read more here: NASA reports 2010 hottest year on record so far
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