Instrument Description for JC105 CTD data
CTD Unit and Auxiliary Sensors
The CTD unit comprised a Sea-Bird Electronics (SBE) 9 plus underwater unit, an SBE 11 plus deck unit, a 24-way SBE 32 carousel and 24 10 L TMF Water Samplers; all of which were mounted on a stainless steel 24-way CTD frame. Attached to the CTD were two SBE 3P temperature sensors, two SBE 4C conductivity sensors, one Paroscientific Digiquartz pressure sensor, one SBE 43 dissolved oxygen sensor, two Chelsea Technology Group (CTG) 2-π PAR sensors, one WETLabs BBRTD light scattering sensor, one Benthos 916T altimeter one CTG Aquatracka MKIII fluorometer and one CTG Alphatracka MKII transmissometer. This was the instrument set up for the CTD during the entire cruise with the exception of casts 027 and 028, during which the two PAR sensors were not attached to the CTD.
| Sensor unit | Model | Serial number | Full specification | Calibration dates (YYYY/MM/DD) | Comments |
|---|---|---|---|---|---|
| CTD underwater unit | SBE 9 plus | 09P-71442-1142 (Ti) | SBE 9 plus | - | - |
| CTD deck unit | SBE 11 plus | 11P-34173-0676 | - | - | - |
| Carousel | SBE 32 - 24 Position Pylon | 32-37898-0518 | SBE 32 | - | - |
| Pressure sensor | Paroscientific Digiquartz | 100898 | Paroscientific Digiquartz | 2012-01-06 | - |
| Temperature sensor | SBE 3P | 3P-4116 | SBE 03P | 2013-08-07 | - |
| Temperature sensor | SBE 3P | 3P-4872 | - | 2013-08-07 | - |
| Conductivity senor | SBE 4C | 4C-2450 | SBE 04C | 2013-07-02 | - |
| Conductivity sensor | SBE 4C | 4C-2580 | - | 2013-08-07 | - |
| Dissolved oxygen sensor | SBE 43 | 43-0619 | SBE 43 | 2013-08-07 | - |
| Altimeter | Benthos PSA 916T | 59493 | Benthos Altimeter | - | - |
| Irradiance sensor (DWIRR) | CTG 2-π PAR | PAR 05 | CTG 2-π PAR | 2013-07-29 | Measuring downwelling irradiance |
| Irradiance sensor (UWIRR) | CTG 2-π PAR | PAR 06 | - | 2013-11-21 | Measuring upwelling irradiance |
| Light scattering sensor | WETLabs BBRTD | BBRTD-1055 | WETLabs BBRTD | 2013-03-13 | - |
| Fluorometer | Chelsea MKIII Aquatracka | 88-2050-095 | Chelsea MKII Aquatracka | 2012-07-25 | - |
| Transmissometer | Chelsea MKII Alphatracka - 25 cm path | 161047 | Alphatracka MKII | 2008-03-18 | - |
