Page 10: of Marine Technology Magazine (November 2011)

news 10MTRNovember/December 2011compact instrument, the device is lit- erally cast (or lowered) into water and retrieved immediately. The Castaway automatically collects and computesthe data and users are able to see the result of their work immediately on a small display. The investigation in to CDOM?s effect on ocean tempera- tures was therefore an ideal applica- tion for YSI?s Castaway-CTD (con- ductivity, temperature and depth). A light-weight and easy to use hydro- graphic profiling instrument, with high-resolution sampling of conduc- tivity, temperature and depth, the Castaway was a vital piece of sam-pling equipment used by the Catlin Arctic Survey team. User Feedback Ann Daniels, of the Catlin Expedition Team was keen to stress the importance of the CTD to the success of the survey, ?It was very The researchers anticipated that the Arctic Ocean would be highly transparent, because the rivers contributing CDOM were frozen. However, the team determined that this was not the case. In fact, Dr. Hill revealed: ?In the Chukchi, between 70 and 80% of solar radiation was being absorbed by CDOM." MTR#9 (1-17):MTR Layouts 11/29/2011 10:12 AM Page 10