Report BPD Pontianak Observation number 35

Radiosonde Observation log

 

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

 

Date (YYYY/MM/DD				2011 /12 /17
Observation Members				Adi Candra, Miswari, Suhendi
Observation Number				35
Observation Time				12 (UTC)
Radiosonde Number Radiosonde Frequency				G0553796 404.50 MHz
Ground Check			Reference	P(hPa): 1007,1	T(0C) : 25,5	RH (%): 0
			Difference	P (hPa): 0,1	T(0C) : -0,2	RH (%): 0
Sonde Release Time				18.30 LST
Observation End Time				19:24:20 LST
Flight Direction (16 direction)				West
Maximum Elevation				16788 (km)
Archive File Name				111217 / 111217.002
Weather Condition				Drizzle
Cloud Amount				7/8   Octus
Surface	Pressure			1007,1    (hPa)
	Temperature			24,8         (0C)
	Relative Humidity			100      (%)
	Surface Wind Direction			90  (deg)
	Suferface Wind Speed			0,7    (m/s)
Comments		Observation success

 

BMKG Tabing Rawinsonde

Report BMKG Tabing Padang (06 UTC, Dec 17, 2011)
1.Launching 66 2.Max height : 23,700 km 3.Weather ( Very Cloudy ) 4.T/P/RH : 30.6 C / 1009.5 mb /65 %.
Report BMKG Tabing Padang (12 UTC, Dec 17, 2011) 1. Launching 67
2. Max height : 22.819k m
3. Weather : rain
4. T/P/RH : 26.0/1008.1/86 %

- Desmon and Bambang Irianto-
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Muara Putus MPR Observation Report Dec 17, 2011

Dear colleagues,

MPR LAN connection had been bad since December 16 morning, just before shift change at 11 AM. Based on Kamimera-san report, the connection become worse since the day afternoon which forced him to do the monitoring task near MPR trailer by wireless LAN connection. This could be probably caused by the condition of the LAN cable itself which become worse after being exposed by various weather condition for a half month long.

Another problem was the velocity sign issue which occurred randomly. This problem usually could be solved by restarting the GDRX-SP (signal processor). This time however, the problem still occurred even if we restarted GDRX-SP.  Therefore, we finally used configuration file provided by SELEX engineer and we replaced the old one on GDRX-SP, and finally, the problem was solved. The velocity sign is return back to normal now (since 1:30 PM).

As for LAN connection, we decided to use two LAN hubs. We put the first hub in the middle of connection between MPR trailer and house, and another one is inside the house. Initially, the connection was not recovered even if we use two hubs, meanwhile the cable itself was fine. After several tests, we tried to unplug the cable from MPR trailer and plug it in again, and the cable connection was finally recovered. Therefore, we finally could monitor the MPR operation from our house again.

The weather itself was cloudy during afternoon, and we had light rain around 5 PM. Anyway, it stopped after 10 minutes. MPR also detected medium to heavy precipitation around Siberut and Sipora islands. The wind was rather calm (< 2m/s), and it mostly came from northwest direction.

Best regards,

-ardhi-

BMKG Tabing Rawinsonde

Report BMKG Tabing Padang (12 UTC, Dec 16, 2011)
1.Launching 63 2.Max height : 29,400 km 3.Weather (cloudy )
4.T/P/RH : 28,7 C / 1007,5 mb /74 %.
Report BMKG Tabing Padang (18 UTC , Dec 16, 2011)
1.Launching 64 2.Max height : 18,900 km 3.Weather (cloudy )
4.T/P/RH : 24.8 C / 1010.2 mb /90 %.
Report BMKG Tabing Padang (00 UTC, Dec 17, 2011)
1.Launching 65 2.Max height : 31,800 km 3.Weather ( Overcast )
4.T/P/RH : 23.7 C / 1008.5 mb /95 %. 5.Rainfall : 7,5 mm
- Desmon -
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Report BPD Pontianak Observation number 34

Radiosonde Observation log

 

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

 

Date (YYYY/MM/DD				2011 /12 /17
Observation Members				Dedi, Sayuti, Tugimin
Observation Number				34
Observation Time				00 (UTC)
Radiosonde Number Radiosonde Frequency				G0553784 404.50 MHz
Ground Check			Reference	P(hPa): 1007,1	T(0C) : 21,9	RH (%): 0
			Difference	P (hPa): -0,1	T(0C) : -0,2	RH (%): 0
Sonde Release Time				06.30 LST
Observation End Time				07:48:26 LST
Flight Direction (16 direction)				West
Maximum Elevation				21801 (km)
Archive File Name				111217 / 111217.001
Weather Condition				Cloudy
Cloud Amount				7/8   Octus
Surface	Pressure			1007,1    (hPa)
	Temperature			23,9         (0C)
	Relative Humidity			100      (%)
	Surface Wind Direction			110  (deg)
	Suferface Wind Speed			0,3    (m/s)
Comments		Observation success

 

Sounding Report of Sipora (Dec. 16)

Dear All,

It was continuous rain in Dec.15 (mainly in the night and afternoon),
and short time afternoon rain today.

Lower tropospheric westerly wind tends to be intensified for a few days.

We will restart 3-hourly sounding from 18 December or 19 December until
the end.

# If we would use "old" transmitter, total number of transmitters
(includes spare) would be enough for the whole period observation.

If you have any suggestions, please let us know.

--- Sounding report of Dec.16 ---

Day Shift: Iyan and Jeni
Night Shift: Hamada and Riris

00Z: Cloudy (7/8), 20.594km
06Z: Cloudy (5/8), 22.200km
12Z: Rain (8/8), 17.394km
18Z: Cloudy (7/8), 17.755km

Best regards,

Hamada Jun1