ARKXXVIII-1/2 , Fram Strait, Bremerhaven-Tromsö; 6 Jun-3 Jul 2014 SHIVASonne SO235 (OASIS-2), Indic Ocean, Port Luis (Mauritius) to Male (Malediven), Jul to Aug 2014 RV Polarstern, ARK XXIX-2.2 (PS93.2), Fram [...] Bremerhaven to Cape Town, Nov/Dec 2008 RV Sonne, SO202.2 (TransBrom-Sonne), Kushiro (Japan) to Townsville (Australia), Oct 2009 RV Polarstern, ANT XXVI-4, Punta Arenas to Bremerhaven, Apr/May 2010 RV Polarstern [...] Prof. Dr. Astrid Bracher Continuous measurements of IOPs at surface water during expedition ARKXXIX-2.2 AC-s (WetLABS) Spectrometer used for continuous sampling of hyperspectral IOPs (attenuation, absorption)