[Nauru [NOAA] [ETL]
Daily Nauru99 Report
NOAA Ship RONALD H. BROWN
Previous <- 6/28/99 -> Next

Time:1450 Local, 0250 Z
Observer:Gillman & Post
GPS Ship Position:
   Lat. 1 deg. 55.5 min. S
   Long. 164 deg. 23.6 min. E
   Heading: 104 deg
Surface Wind: 7.0 m/s @ 88 deg. (14 m height)
Air Temp:28.7C (13 m height)
Sea Temp:29.3C (5 m depth)
Rel. Humidity:66.7 % (13 m height)
Precipitation last 24 hr:14.3 mm
Column Water Vapor:2.7 cm (5.0 cm just after passage of morning storm)
Cloud Layer Heights:
    Ceilometer:0.6 - 0.8, 2.6, 4.0 km bases
    MMCR Radar: 0.6 - 0.8, 9.0 and 14 km bases
    Lidar: n/a
Radiosonde Inversion Height:0.6 km @ 2027 Z (Day 178)

Visual Observations:We awoke to stormy skies. One line of storms passed our location at 0530, another at 0900 (both local time). Conditions gradually improved throughout the day, but with much more cloudiness than previously experienced here, including a lot of cirrus. Wind is higher as well

Notable Events and Anecdotes:The Cessna 404 overflew us once today, including an up-down profile to 3 km altitude. The ship's small boat was deployed with 3 photographers/videographers to capture the fly-by (see image below). Volker Wulfmeyer walked into the science lab looking like a drowned rat, after covering HRDL's scanner in the midst of a morning shower. Dolphins continue to play around the buoy.

Instrument Status:All is well except for a dead DABUL. Flashlamps on MPI's DIAL lidar continue to set a lifetime record with each passing hour (they are now 2 days past their expected 72-hour lifetime). Several good cases of simultaneous vertically-pointing water vapor DIAL and Doppler lidar were acquired, beneath both precipitating and non-precipitating clouds.


University of Flinders' Cessna 404 about to fly between PMEL's TAO buoy and NOAA's Ronald H. Brown just after completing an up-down profile to 3 km altitude near the ship. Buoy and ship are about 200 m apart. The image was captured from the ship's RHIB (small boat), deployed for the occasion.
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Updated: June 1999