# coef_tco2.dat (File 8)

This file provides the coefficients *a*, *b*, *c*, and *d* used to calculate TCO_{2} from the T, apparent oxygen utilization (AOU), and S. Each line of the file contains a longitude, latitude, offset coefficient *a* (below MLD), T coefficient *b* (below MLD), AOU coefficient *c* (below 1000 m), and S coefficient *d* (below MLD). The file is sorted by longitude and latitude and can be read by using the following FORTRAN 77 code [contained in coef_tco2.for (File 3)]:

REAL lon, lat, coefa, coefb, coefc, coefd read (1, 10, end=999) lon, lat, coefa, coefb, coefc, coefd 10 format (F6.1, 1X, F6.1, 2X, F11.4, 1X, F11.5, 1X, F12.6, 1 1X, F11.5)

Stated in tabular form, the contents include the following:

Variable | Variable type | Variable width | Starting column | Ending column |
---|---|---|---|---|

lon | Numeric | 6 | 1 | 6 |

lat | Numeric | 6 | 8 | 13 |

coefa | Numeric | 11 | 16 | 26 |

coefb | Numeric | 11 | 28 | 38 |

coefc | Numeric | 12 | 40 | 51 |

coefd | Numeric | 11 | 53 | 63 |

The variables are defined as follows:

lon | - | is the longitude for which coefficients were calculated; |

lat | - | is the latitude for which coefficients were calculated; |

coefa | - | is the offset coefficient a (for depths below MLD); |

coefb | - | is the T coefficient b (for depths below MLD); |

coefc | - | is the AOU coefficient c (for depths below MLD; and |

coefd | - | is the S coefficient d (for depths below MLD). |