What is actually measured?

	Why, why, why - What is actually being measured?

	The name CTD probe stands for conductivity, temperature and depth. In German: conductivity, temperature and depth. The CTD probe is used to measure these properties of the water. Among other things, the salinity, oxygen content and pressure can also be determined. This measurement data tells us how and where the water was formed and how long it has been since its last contact with the atmosphere.

	The measurements with the CTD probe provide data for marine research as a whole. Water quality is of great importance for the creatures for which water serves as a habitat. Measurement data collected over many years helps to create comparative material and thus provides a basis for political decisions. In this way, the herring can also be placed under protection. By understanding global current systems and the exchange with the atmosphere, we can also understand the relationship between the sea and the climate. The CTD probe is used to identify any resulting problems.