FIRE/SHEBA 23 June, 1998

Weather

This was probably the clearest day that any aircraft took data over SHEBA ship. The satellite images, radar, and lidar are all void of clouds in the afternoon. Low level fog and/or haze also was absent. The large high formerly in the Beaufort Sea, had move directly north of SHEBA ship near the pole. A large clear area protruded south from the high over SHEBA ship.

The trajectories to SHEBA ship show all air coming from the northeast. The surface to 3.0 km tractories trace back to northeastern Greenland. The higher trajectories, 6 and 9 km, also trace back to the north in the first day but then loop back to the Chukchi Sea in 3-4 days.

The trajectories to Barrow trace back to the north to Greenland at all levels.

Wylie 10 September 98