Fw: Sounding report at Sipora (December 1)

Dear All,

We started 3-hourly radiosonde observation at Sipora from 00Z of December 1.

# I attach the photo of 1st observation (00Z).

It has been very windy and rainy conditions. Wind speed was above 15m/s
around 1km height (northeasterly to westerly). Moderate and/or weak rain
(without thunder) continues almost whole a day.

- Sonde observational reports for December 1, 2011

(Observational members)
00Z-12Z: Iyang (BPPT), Bambang (BMKG Tabing) (Hamada (JAMSTEC), monitor)
12Z-21Z: Hamada, Riris (TPI Sipora), Tanoue (Kumamoto Univ.)

(Observational time, weather conditions, maximum height)

00Z: 1st, cloudy (overcast), 4.860km
    2nd, rain (overcast), 4.934km

03Z: 1st, rain (overcast), 4.774km
    2nd, rain (overcast), 19.734km

# Vertical speed of the balloons (00Z 2nd, 03Z 1st) were about 0m/s to
-2m/s around 4-5km height in rain clouds, though we added more buoyancy
force than clear case. Thus, the observation were automatically
terminated because of increasing pressure.

06Z: cloudy (overcast), 20.815km

09Z: rain (overcast), 20.531km

12Z: rain (overcast), 16.855km

15Z: 1st, miss launch. The transmitter hit a electricity cable.
    2nd, slightly rain (overcast), 17.502km

# One transmitter could not be used (GPS sensor problem)

18Z: slightly rain (overcast), 18.604km

21Z: slightly rain (overcast), 19.593km

HAMADA Jun-Ichi