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Department of Oceanography
University of Hawaii |
Meteorological observations are collected during HOT cruises by the science personnel and stored in ASCII files. Two data formats exist. Cruises 1 through 27 are written in the first format that contains only numeric data (files met1_#.dat, where # is the cruise number). Starting with cruise 28, the data exist in the original format and in the second format that contains some character fields (e.g. Type of cloud) in addition to the numerical data (files met2_#.dat).
met1_#.dat format
Columns Contents ------- -------- 1 Year 2 Month 3 Day 4 Hour of the day (GMT) 5-6 Latitude position (degrees and minutes) 7-8 Longitude position (degrees and minutes) 9-10 Ship speed (knots) and direction 11-12 Relative wind speed (knots) and direction 13 Atmospheric Pressure (mbar or Inches of Mercury) 14 Dry Bulb Air Temperature (deg C) 15 Wet Bulb Air Temperature (deg C) 16 Sea Surface Temperature (deg C) 17 Quality wordThe quality word is the left-to-right concatenation of required quality bytes for the variables measured starting with column 9. They are defined as follows:
byte value Definition 2 Acceptable measurement. 3 Questionable measurement. 4 Bad measurement. 5 Not reported. 6 Interpolated value. 7 Not assigned for meteorological data 8 Not assigned for meteorological data 9 Not sampled
met2_#.dat format
Columns Contents ------- -------- 1 Year 2 Month 3 Day 4 Hour of the day (GMT) 5-6 Latitude position (degrees and minutes) 7-8 Longitude position (degrees and minutes) 9-10 Ship speed (knots) and direction 11-12 Relative wind speed (knots) and direction 13-14 True wind speed (knots) and direction 15 Atmospheric Pressure (mbar) 16 Dry Bulb Air Temperature (deg C) 17 Wet Bulb Air Temperature (deg C) 18 Sea Surface Temperature (deg C) 19 Type of cloud (Low, Medium, High) 20 Amount of Cloud (1/8th) 21 Present Weather Code
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