CalCOFI cruises on SIO vessels, particularly RV New Horizon, collects underway data recorded by the MET (shipboard meterological) system. Every thirty-seconds, a record of surface measurements (T, S, Fl, pH), ship measurements (speed, heading, Ashtech, winch, PDR, & more), and meterological measurements (wind, surface PAR, barometer, & more) are combined into a single, comma-delimited record. Each data field is defined by the adjacent field variable label ie ...10.0,WS,320,WD... is 10.0kts wind speed, 320° wind direction. Please refer to the list below or to MetAcq Operator’s Manual (Shipboard Technical Support Revision 2.00 March 2009) for more information
Underway_Raw.txt Variables:
$WICOR Data Corrected
DDMMYY
HHMMSS
WS Wind Speed - Port
WD Wind Direction - Port
TW True Wind Speed M/S - Port
TI True Wind Direction Deg - Port
WS Wind Speed - Starboard
WD Wind Direction - Starboard
TW True Wind Speed M/S - Starboard
TI True Wind Direction Deg - Starboard
AT Air Temperature Deg C
BP Barometric Pressure mb
RH Relative Humidity %RH
RT Air Temp (RH module) Deg C
DP Dew Point Deg C
PR Precipitation mm
LD LWR Dome Temperature Deg K
LB LWR Body Temperature Deg K
LT LWR Thermopile Volts
LW Long Wave Radiation W/M^2 (Pyranometer)
SW Short Wave Radiation W/M^2 (Pyranometer)
PA Surface PAR uE/Second/Meter^2
ST Sea Surface Temperature Deg C
TT SBE21 Temperature Deg C (may replace ST field: Sea Surface Temperature Data)
TC SBE21 Conductivity mS/m
SA Salinity PSU
SD Sigma-t Kg/m^3
SV Sound Vel (Chen/Millero) M/S
FL Fluorometer ug/l
FI USW Flow Meter LPM
BT Bottom Depth Meters
LA Latitude Decimal format Deg
LO Longitude Decimal format Deg
GT GPS Time of Day GMT Secs 0-86400
CR Ships Course (GPS COG) Deg
SP Ships Speed (GPS SOG) Knts
ZD GPS DateTime GMT Secs Since 00:00:00 01/01/1970
GA
GS
GY Ships Heading (Gyrocompass) Deg
SL Ships Speed (Speed Longitude) Knts
SX
SH Ashtech Heading Deg
SM Ashtech Pitch Deg
SR Ashtech Roll Deg
ZO Winch Cable
ZS Winch Speed
ZT Winch Tension
IP
IV
IA9*77,
Event_Num CalCOFI Event# Appended
Each data point has a 2 character ID to identify it. There is also a third character to help clarify the type of data. E.g. +25.3,AT0 (air temperature, calibrations not applied):
0 - Calibration coefficients not applied
1 - Calibration coefficients applied in Sensor Module
2 - Calibration coefficients applied in Acquisition computer
3 - Calibration coefficients applied in Sensor Module and Acquisition computer
7 - Data Out of Range
8 - Data is Emulated (Not Real)
9 - Data invalid