Firstly, as discussed in earlier posts, there has been robust cyclonic exercise over the Arctic Ocean (see also Arctic Sea Ice weblog submit). Another Copernicus forecast shows excessive ozone levels over Siberia and the East Siberian Sea. The animated picture below, primarily based on NOAA data for the interval December 7, 2011 - January 21, 2012, reveals that specific areas can already experience anomalies of over 20 degrees Celsius for particular days. For individual days and areas, the anomaly might be even more putting.