Time: 1506 Local, 0306 Z
Observer: Gillman & Post
GPS Ship Position:
   Lat. 1 Deg. 55.7 min S
   Long. 164 deg. 23.3 min E
   Heading: 084 deg
Surface Wind:1.7 m/s @ 158 deg. (14 m height)
Air Temp: 27.8C (13 m height)
Sea Temp: 28.9C (5 m depth)
Rel. Humidity: 69.5 % (13 m height)
Precipitation last 24 hr: 0 mm
Cloud Layer Heights:
    Ceilometer: 0.6 km
    MMCR Radar: n/a
    Lidar: n/a
Radiosonde Inversion Height:0.6 km @ 0229 Z (23 June)

Visual Observations: Light and variable winds, glassy sea surface. 3-5m swells from east. Broken marine cumuli.

Notable Events and Anecdotes: We began 8 per day radiosonde operations yesterday, just prior to reaching the TAO buoy (our "home" for seven days). Winds are light, so RHB is steaming at 3-5 knots in "racetracks" around the buoy, in order to aspirate ship sensors with clean air and to keep ship's exhaust away from radars and radiometers. A large shark has been seen frequently near the buoy, as well as some fish. Only a few fish have been caught, but enough for a fantail BBQ tonight. Spectacular crepuscular rays were seen after sunset yesterday, caused by the shadowing of sunlight from the upper atmosphere by unseen towering cumuli hundreds of kilometers away, over the horizon. RHB was visited twice today by a low-flying (50 feet) Cessna 404 research aircraft from Flinders University (Australia).

Instrument Status: C-band radar remains down with elevation drive problems. The elevation motor needs to be replaced and the absolute elevation angle needs to be recalibrated. It is a good time for problems, since there are no storms to scan anyway. The workstation for generating new, combined satellite products failed and will need significant software reconstructive surgery over the next few days. All other sensors are functioning well.