Dataset Title: Nathaniel B. Palmer Raw ADCP Data Cruise: NBP03-04a Contact: Jim Swift UCSD/SIO, 0214 9500 Gilman Dr. La Jolla, CA, USA 92093-0214 Phone:(619)534-3387 Fax:(619)534-7383 jswift@ucsd.edu Dataset Description: The shipboard ADCP system measures currents in the depth range from about 30 to 300 m -- in good weather. In bad weather or in ice, the range is less, and sometimes no valid measurements are made. It is the USAP-funded project of Eric Firing (University of Hawaii) and Teri Chereskin (Scripps Institution of Oceanography). ADCP data collection occurs on the both LMG and the NBP for the benefit of the scientists on individual cruises, and for the long-term goal of building a climatology of current structure in the Southern Ocean. The ADCP data set collected during this cruise has been placed on the distribution media in the archive /adcp/304Aadcp.tar. The archive consists of a single file for each day of data collection. The files are named PINGDATA.xxx where xxx is a day number that is NOT a year-day. For the date, use the file's creation date. Some ADCP data is also transmitted to RVDAS. East and north vectors for ship's speed relative to the reference layer and ship's heading are archived as 304Aadcp.tar in the directory, /rvdas/nav.