The frontal cloud mass that convered SHEBA ship on the previous day has moved through. However, low clouds remain over the ship. This front is part of a low pressure center near the pole. Its affects almost reached Barrow which has some cirrus to the north. Clouds over Barrow were broken cirrus and altostratus. Most of the clouds were north of Barrow while the North Slope to the south appeared to be clear.
The trajectories to SHEBA ship show show the affect of having the low near the pole for several days. Air at most levels came from the west - western Siberia and north Europe. Only the surface trajectory traces southwest into northern Siberia.
The trajectories to Barrow show a different pattern than SHEBA ship for the lower levels. Air from the surface to 1.5 km appears to have come from the Beaufort Sea and the Alaskan coast to the east of Barrow. Winds were lighter at 1.0 and 1.5 km than the surface resulting in very short 6 day trajectories for these levels. The 3.0 km trajectory followed a different direction than the other levels going south to the Pacific Ocean across Alaska. The 6 and 9 km trajectories trace air to the west into central Asia.
