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Report from the Ron Brown: July 9, 1999

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Photo (left):Tepora Toliniu (student) and Jennifer Aicher (teacher) of La Vai Moana Marine Center in American Samoa, working in the Hydro Lab. Jen also helps with balloon launches and Tepora with hand-held sun photometer observations.

Other snapshots from the Ron Brown

Daily Weather Forecast Mirai Updates! Nauru Updates!

Commentary:

After yesterday's rains and clouds we decided to stay put for another 24 hours to get better radiative measurements on the windward side of the island. Seas remain rough so RHIB (small boat) runs to Nauru are being kept to a minimum. Jeff Otten arrived on board this morning, glad to be here. The ship has made enough fresh water to allow laundry again; there was a rush to the machines because most of us were out of clean skivies! Jeff Hare and Jon Shannahoff observed Atmosphere Radiation and Cloud Station (ARCS) radiosonde launch procedures to help understand an apparent dry bias in sondes there. Four island sondes have now been launched from the Ron Brown and vice versa, but results are not yet in.

Date: July 9, 1999
Local Time: 1515 Local, 0315 Z
GPS Ship Position:

Lat. 0 deg. 33.1 min. S

Long. 166 deg. 58.0 min. E

Heading: 106 deg
Surface Wind: 6.7 m/s @ 094 deg. (14 m height)
Temperature: 28.1C (13 m height)
Sea Surface Temperature: 28.8C (5 m depth)
Relative Humidity: 75.9 % (13 m height)
Precipitation last 24 hr: 10.6 mm
Column Water Vapor: 4.2 cm (MWR)
Cloud Layer Heights:

Ceilometer: 0.6, 4.6 km bases

Radar: 0.7 - 1.0, 10 km base

Lidar: 0.6, 6.5, 10.0 km bases

Radiosonde Inversion Height: 0.5 km @ 0524 Z (Day 189)

Visual Observations:

A more typical day. Mostly sunshine with scattered marine boundary layer cumuli but with a few higher clouds. Brisk wind and whitecaps.

Instrument Status:

All is well on the western front.

Previous Days' Updates:

July 8, 1999
July 7, 1999
July 6, 1999
July 5, 1999
July 3, 1999
July 2, 1999
July 1, 1999
June 30, 1999
June 29, 1999
June 28, 1999
June 27, 1999
June 26, 1999
June 25, 1999
June 24, 1999
June 23, 1999
June 22, 1999
June 21, 1999
June 20, 1999
June 19, 1999
June 18, 1999
June 17, 1999
June 16, 1999
June 15, 1999
June 14, 1999
June 10, 1999

 

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