Tuesday 20 December 2011

Report BPD Pontianak observation 41

Radiosonde Observation log
Station
Pontianak (LAPAN Observatory)
Position
0.00 0 S,109.370 E
Altitude
1m MSL

BMKG Tabing Rawinsonde

Report BMKG Tabing Padang (06 UTC, Dec 20, 2011)
1. Launching 78
2. Max height : 29.470 km
3. Weather (cloudy)
4. T/P/RH/ :25.4 C/1009.5 mb./94%.

Report BMKG Tabing Padang (12 UTC, Dec 20, 2011)
1. Launching 79
2. Max height : 17,241 km
3. First launching at 11.30 Z but there is something problem with signal, so relaunching at 12. 25 Z and succesful
4. Weather : rain
5. T.27,0C P.1007,5 mb RH.90 %

- Erwin and Anizar -
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Muara Putus MPR Observation Report Dec 19, 2011

Dear colleagues,

Some problems had occurred during MPR observations on December 19 afternoon. Anyway, the condition had been recovered to normal, and the observation could continue until this report is made.

13:05 LT - PLN power fault (blackout) for about 5 seconds. Tx stopped. The observation restarted at 13:20 LT.

13:25 LT - PLN second blackout, for about 5 seconds (again). Tx and ACU stopped. ACU error status, AZ servo drive (internal software) error.

13:30 LT - ACU error recovered by switching ON and OFF the Radar Cabinet Main Breaker.

13:35 LT - PLN third blackout, just after TX preheating process finished. The blackout was longer. Genset started but then stopped after several seconds due to oil pressure fault. MPR stopped completely. I visually could see the thunderstorm occurred around Tiku area (from MPR site).

BMKG Tabing Rawinsonde

Report BMKG Tabing Padang (12 UTC, Dec 19, 2011)
1.Launching 75 2.Max height : 14,100 km 3.Weather (cloud )
4.T/P/RH : 25,3 C / 1007,5 mb /94 %.
Report BMKG Tabing Padang (18 UTC, Dec 19, 2011)
1.Launching 76 2.Max height : 18,300 km 3.Weather (Rain)
4.T/P/RH : 24.2 C / 1010.3 mb /94 %.
Report BMKG Tabing Padang (00 UTC, Dec 20, 2011)
1.Launching 77
2.Max height : 27,480 km
3. Weather (cloudy)
4.T/P/RH/ :24.0 C/1007.9 mb./98%.
5.Rainfall : 18.7 mm.

-Desmon and Erwin BMKG-
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AWS and disdrometer at Sicincin (20 Dec 2011)

According to information from Pak Sugeng of BMKG on 20th, AWS and
disdrometer at Sicincin are working well.

Hideyuki Kamimera
Research Institute for Global Change
Japan Agency for Marine-Earth Science and Technology
Email: kamimera@jamstec.go.jp Ph./fax: +81-46-867-9278/-9255

Report BPD Pontianak Observation number 40

Radiosonde Observation log
Station
Pontianak (LAPAN Observatory)
Position
0.00 0 S,109.370 E
Altitude
1m MSL

Report BPD Pontianak Observation 39

Radiosonde Observation log
Station
Pontianak (LAPAN Observatory)
Position
0.00 0 S,109.370 E
Altitude
1m MSL

Sounding Report of Sipora (Dec. 19)

Dear All,

We have restarted 3-hourly sounding since 00Z of 18 December.

It was windy night (almost 15m/s at 1.5km height) and I could hear
sounds of sea wave at the site.

We have afternoon rain (shower) every day since 15 December.

--- Sounding report for 19 December ---

Day shift: Iyan, Jeni
Night shift: Hamada, Riris

00Z: Overcast (8/8), 21.591km
03Z: Very cloudy (7/8), 19.866km
06Z: Very cloudy (7/8), 23.265km
Wind EDT data were missing between 11.7-15.8km height.

09Z: Very cloudy (7/8), 22.039km

12Z: Cloudy (5/8), 17.128km
Wind EDT data were missing between 10.5-12.8km height.

15Z: Cloudy (8/8), 18.085km
18Z: Cloudy (8/8), 19.710km
21Z: Slight rain (8/8), 17.838km

It was rain around 3am and after 4-6am.

Best regards,

Hamada Jun1