SUBICE Measurements ~80 full biology stations ~50 Chl-only stations ~15-20 sea ice stations Sea ice stations Ice and snow thickness survey (Perovich) Ice optics through drilled hole (melt ponds and bare ice) (Perovich) Under-ice water column optical profile through drilled hole (Perovich) Ice cores Nutrients (NO3, NO2, NH4, PO4, Si(OH)4) (Arrigo) Salinity (Arrigo) Algal pigments (Arrigo) MAAs (Arrigo) Algal absorption (Grondin) P vs E (Arrigo) DMS, DMSP, DMSO concentrations under ice (Lavasseur) Plankton net tow (maybe) (Ashjian) Water column stations On CTD: Temperature Salinity Phytoplankton fluorometer Transmissometer (red and blue) PAR sensor Video plankton recorder Oxygen DIC, TA, pH (Achterberg) DOC, DON (Michel or Achterberg) H218O (Michel or Achterberg) Nutrients (NO3, NO2, NH4, PO4, Si(OH)4) (Arrigo) Trace metals (Achterberg) Salt (Pickart) Oxygen (Pickart) Phytoplankton pigments (HPLC and fluorometric) (Arrigo) Phytoplankton absorption (Grondin) MAA content (HPLC) (Arrigo) SIS Primary production (Arrigo) Phytoplankton P vs E (Arrigo) Phytoplankton FRRF (Arrigo) Bacterial abundance (Michel) Bacterial production (Michel) CDOM absorption (Renaut) Loki (zooplankton camera) (Schmid) Bongo nets for zooplankton (Ashjian) Ring net for zooplankton; 1 tow, occasional time permitting (Ashjian) Microzooplankton grazing (Connell) POC, PON, POP (Arrigo) Flow cytometry (particle size distribution) (Laney, Meisterhans) Imaging FlowCytobot (phytoplankton and protist identification and quantification) (Laney, Grondin) Molecular taxonomy (Motegi) Microscopy (Ashjian, Connell) DMS, DMSP, DMSO concentrations (Lavasseur, Hussherr) Sediment stations VanVeen grab (Schollmeier) Chlorophyll a (Schollmeier) IP25 (Schollmeier) Sterols (Schollmeier)