USCGC Healy HLY-02-03 1-Minute Position and Weather Data

• Main Authors: Greg Stossmeister, United States Coast Guard
• Format: Dataset
• Language: unknown
• Published: Arctic Data Center
• Subjects: Arctic; Surface
• Online Access: https://doi.org/10.18739/A2319S246

This dataset is a composite of several ship underway datasets produced by the U.S. Coast Guard aboard the USCGC Healy during the Summer SBI Process Cruise of 2002 (hly-02-03). Routine data logging procedures for underway data aboard the Healy archive data of different types in physically seperate files. This has the unfortunate effect of seperating interesting data from the location of the ship when the measurement was taken. To remedy this situation, a perl script was written by the author to produce a composite file that contained both ship position and weather information collected during the above mentioned cruise. This file is a composite of the PCode-Aft_GGA position datafiles (1 second resolution), the RMYoung-AIR weather datafiles (3 second resolution), and the TrueWindSpeed datafiles (1 second resolution). The composite is a collection of grab samples (not averages) at approximately 1 minute intervals during the cruise. The composites were constructed by starting with the time at which the weather observation occurred. The TrueWindSpeed files were then searched to find corresponding wind information. Lastly, the position files were searched until the position at the observation time was found. If the times matched or were within 10 seconds of one another, the weather, winds and position data were written to the composite file. The position information was converted from Degrees Minutes Seconds format (DDDMM.SSS) to a Decimal Degrees format (DDD.DDDDD)