The high pressure in the Beaufort Sea was northeast of SHEBA ship. A very weak low also was southwest of the ship in the western Chukchi Sea. Winds at the ship were from the southwest. Broken cirrus and altostratus cover the ship blowing in from the southeast.
Barrow had some light cirrus overhead. Some broken stratus could be seen to the north while the North Slope appeared to be mostly clear to the south.
The trajectories to SHEBA ship show most air coming from the south in the Chukchi Sea for the first day and then curving in other directions. The surface air came from the southeast in the Beaufort Sea around the high pressure system. The 1.0 km air apparently came from the southern Chukchi Sea only a very short distance under light winds. The 1.5 km trajectory shows air coming from the south crossing the eastern tip of Siberia. Higher trajectories, 3, 6, and 9 km trace south into the Chukchi Sea the first day and then curved west back to central Asia.
The trajectories to Barrow show all air except the surface coming from the south. The surface trajectory tracks east along the Beaufort Sea coast around the high pressure system. The 1.0 and 1.5 km trajectories track south across Alaska while the higher trajectories, 3, 6, and 9 km track southwest along the Alaskan coast before curving into Alaska and eventually tracing down to the north Pacific Ocean south of the Aleutian Islands.
