Intensive cast of microstructure profiler
Southeasterly still prevailed, but its speed decreased to 5m/s.
Wave height became less than 2m, so it is now relatively calm
condition comparing to the past weeks.
While dry condition continued, total precipitable water vapor gradually
increased to 40mm.
Today, we've been conducting intensive observation of ocean surface
structure using a profiler called TurboMAP (which measures current shear
with 512 Hz). Usually, our 3-hourly routine observation consists of
radiosonde launch, CTD with LADCP (and water sampling for 6-hourly) down
to 500m, microstructure profiler down to 300m (2 times/each), and
steaming upwind to obtain precise atmospheric turbulent data (about 1
hour). Today, however, we cancel to steam against wind. Instead, we
conduct microstructure profiler cast 6-7 times every 3 hours.