Friday, March 22, 2013
The NOAA image below gives an update on the temperature anomaly over Greenland, as earlier discussed in the post including Huge patches of warm air over the Arctic.
Below a NOAA animation showing a 30-day loop (up to March 19, 2013) of analyzed 200-hPa heights and anomalies. An eleven-day mean, centered on the date indicated in the title, of 200-hPa heights and anomalies from the NCEP Climate Data Assimilation System (CDAS), is shown for the first 25 days of the animation. 10-, 9-, 8-, 7-, and 6-day running means are shown for the last 5 days, respectively. Contour interval for heights is 120 m, anomalies are indicated by shading. Anomalies are departures from the 1979-95 daily base period means.
As discussed in earlier posts (see below), changes to the jet stream are making extreme weather events increasingly likely to occur, which spells bad news for the sea ice.