Sea Ice Observations from the Nathaniel B Palmer 99-1

These data describe pack ice characteristics in the Antarctic sea ice zone. These data are in the ASPeCt format. National program: United States Vessel: Nathaniel B. Palmer Dates in ice: 31 Dec 1998 - 30 Jan 1999 Observers: Martin Jeffries, others Summary of voyage track: 31/12 - 11/1 N-S transect along 165W between 65-75S 13-22/1 S-N transect along 150W between 74-65S 24-30/1 N-S transect along 135W between 69-74S Note: No observations along E-W legs between N-S legs The fields in this dataset are: SEA ICE CONCENTRATION SEA ICE FLOE SIZE SEA ICE SNOW COVER SEA ICE THICKNESS SEA ICE TOPOGRAPHY SEA ICE TYPE RECORD DATE TIME LATITUDE LONGITUDE OPEN WATER TRACK SNOW THICKNESS SNOW TYPE SEA TEMPERATURE AIR TEMPERATURE WIND VELOCITY WIND DIRECTION FILM COUNTER FRAME COUNTER FOR FILM VIDEO RECORDER COUNTER VISIBILITY CODE CLOUD WEATHER CODE COMMENTS