CTD (standing for: Concise and Terribly Distressful)
Date of birth: end of 2011
Place of birth: Washington, USA
Parents: Raquel, Angela, Grigor and Vincent
Siblings: The Radiometer
-Handle the CTD with immense care and don’t rush it!
-A good teacher (while on the cubi) will definitely help you take accurate measurements and will explain in depth the principals of its use, unless singing/listening Greek songs distracts him!
-Singing in general will help you a lot to concentrate and find the perfect – appropriate rhythm for lowering the CTD in the water
-Use an umbrella while using it and hide below it, in order to protect from light (and be fashionable!)
-Drift with the currents and trust the waves when “travelling” from one cluster to another, without being attached to any of the ropes. Oops! If the weather changes unexpectedly and floats you towards Calvi, jump in the water and save the CTD!
-Don’t panic! Instructions for correct handling are given on board the cubi. Try to keep calm
-Real time data will only come after a quite long processing day that requires patience and … knowledge of course
-Rinse the CTD with water (and affection…) immediately after each use and, if necessary, forget about your lunch
Principal(ok, let’s be a bit more serious now!)
The CTD (actually standing for Conductivity, Temperature, Depth) is an instrument that takes continuous measurements of several water characteristics (temperature, conductivity – from which salinity is derived -, pH, fluorescence of chlorophyll pigments, photosynthetically available radiation, and dissolved oxygen concentration), with the use of sensors that are placed whether in external or internal flows. It provides you with a detailed description of your water sample, with measurements taken four times per second. These measurements are then aligned to depth (by converting pressure to meters) and are saved in digital form in order to be processed later…