Description of labels in data file (NC149E or later)

Col. | Label | Description | Unit |
---|---|---|---|

A | yyyymmdd | date (year-month-day) | GMT |

B | hhmmss | time (hour-min-sec) | GMT |

C | utc | serial number since January 1, 1900 | day |

D | Epoch | UNIX Epoch time (the number of seconds that have elapsed since 00:00:00 Thursday, 1 January 1970 UTC) | second |

E | Lat | latitude | degree N |

F | Lon | longitute | degree E |

G | ShipSpeed(KT) | ship speed | knots |

H | TrueHeading(deg) | True Heading | degree |

I | SLP | sea level pressure | hPa |

J | Air xCO2 | calibrated atmospheric xCO_{2} |
ppm |

K | SD | standard deviation of Air xCO2 cal | |

L | Flag_x | 0: SD < 0.3; 1: SD < 1.0; blank: SD = 1.0 or more (value eliminated) | |

M | Air fCO2 | calibrated atmospheric fCO_{2} |
μatm |

N | SD | standard deviation of Air fCO2 cal | |

O | Air pCO2 | calibrated atmospheric pCO_{2} |
μatm |

P | SD | standard deviation of Air pCO2 cal | |

Q | EQTemp | calibrated temperature in Equilibrator | degree Celsius |

R | SST | calibrated sea surface temperature(SST) | degree Celsius |

S | SD | standard deviation of calibrated SST | |

T | EQP(hPa) | pressure in equilibrator | hPa |

U | xCO2_Eq | calibrated sea water xCO_{2} at equilibrator temperature |
ppm |

V | SD | standard deviation of xCO2_Eq | |

W | fCO2_Eq | sea water fCO_{2} at equilibrator temperature |
μatm |

X | SD | standard deviation of fCO2_Eq | |

Y | fCO2_SST | sea water fCO_{2} at SST |
μatm |

Z | SD | standard deviation of fCO2_SST | |

AA | xCO2_SST | sea water xCO_{2} at SST |
ppm |

AB | SD | standard deviation of xCO2_SST | |

AC | pCO2_SST | sea water pCO_{2} at SST |
μatm |

AD | SD | standard deviation of pCO2_SST | |

AE | delta fCO2 | ΔfCO_{2} = sea water fCO_{2} at SST - atmospheric fCO_{2} |
μatm |

AF | delta xCO2 | ΔxCO_{2} = sea water xCO_{2} at SST - atmospheric xCO_{2} |
ppm |

AG | delta pCO2 | ΔpCO_{2} = sea water pCO_{2} at SST - atmospheric pCO_{2} |
μatm |

AH | Salinity | verified salinity from calibrated SBE salinity | |

AI | SD | standard deviation of calibrated SBE salinity | |

AJ | Bubble Flag | 0: normal; 1: possible to bubble in pipe by ship rolling/pitching | |

AK | Bottle Name | bottle name of sampling (NC125E or later) |

**Changes since previous format**

- Add Epoch (UNIX Epoch time),
- Remove Flag_f for Air fCO2 and Flag_p for Air pCO2.