High Resolution Time Series Measurements of Biooptical and

High Resolution Time Series Measurements of Biooptical and Physical Variability in the Coastal Ocean as Part of Hy. CODE Dickey Mooring

Objectives The long-term goal of our project is to increase understanding of the variability of inherent and apparent optical properties (IOPs and AOPs) of ocean waters and their relationships to each other as well as to physical processes on continental shelves. Specifically: • To provide the maximum number of in situ observations of IOPs and AOPs possible for calibrating, groundtruthing, and relating subsurface optical properties to aircraft and spacecraft ocean color data • To develop, test, and validate optical models and high resolution interdisciplinary models of the coastal ocean. • To study processes that contribute to temporal and spatial variability of spectral IOPs and AOPs. In particular, we are determining how temporal and spatial variability in IOPs and AOPs are affected by: - Coastal physical and biological dynamics and larger scale circulation patterns, - Wave fields, - Water column stratification and current shears, - Near surface and near bottom mixing, - Diurnal and seasonal biological and physical cycles, and - Riverine and runoff inflows.

Approach, 2001 What’s New? - Hyperspectral Ed/Lu sensors - Temperature every ~1 m - Salinity every 3 -5 m - Shorter deployment Data collected? Everything except: - ADCP quit JD 184 - Hi. Star dropped data packets - Hydro. Scat-6 quit JD 179 - 5 m Lu didn’t work - SAFire (several l’s) Sampling Rates ac-9: once per hour ADCP: once per minute Beam c: once per minute Fluorometer: once per minute Hydro. Scat-6: once per hour Hyperspectral: once per hour Microcat: once per minute PAR: 8 times per hour Pressure: once per second SBE-39: once per minute Seacat: once per minute Tidbit: once every 5 minutes TSKA: once every 2 minutes

Results ac-9

ADCP

Transmissometer and Fluorometer

Hydro. Scat-6

Hyperspectral Ed/Lu

PAR

Bottom Pressure 1 -min avg 12 -hr avg 24 -hr avg

Hydrography

Temperature