Table 4 Descriptions of the carbon cycle following the information provided in the library P09 of the “MEDATLAS Parameter Usage Vocabulary” hosted and managed by the British Oceanographic Data Centre (BODC) by means of the NERC Vocabulary Server (NVS2.0).

From: Biogeochemical parameters collected and analysed during the French cruises of the PIRATA programme in the Guinea Gulf, 1997--2024

Acronym SDN : P09

Parameter

Units SN : P06

Description

PHPH

PH

No Units

Minus the log of the hydrogen ion concentration (moles per liter) in the water column

PHTX

TEMPERATURE OF PH MEASUREMENT

Celsius degrees

Temperature of pH determination

ALKW

ALKALINITY

μmole/kg

Quantity (i.e. number of moles) of acid-neutralising bases per unit mass of the water column

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