1 nict, japan (satoh@nict.go.jp) 2 osaka university, japan 3 toshiba corporation, japan
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Three-dimensional Fine Structure of Localized Heavy Rainfalls Measured by Phased Array Weather Radar
Shinsuke Satoh 1 , Tomoo Ushio 2, Shigeharu Shimamura 2, Koichi Maruo 2, Fumihiko Mizutani 3, Masakazu Wada 3, Hiroshi Hanado 1, Seiji Kawamura 1, Seiho Uratsuka 1 and Toshio Iguchi 1
1 NICT, Japan (satoh@nict.go.jp)2 Osaka University, Japan3 Toshiba Corporation, Japan
1. Introduction ・ In Japan, severe weather
disasters caused by localized heavy rainfalls or tornadoes have occurred frequently in the last several years.
・ Although it is important to measure three dimensional structure of the rapidly developed severe storms, a volume scan by a parabolic antenna requires substantial time of more than 5 minutes.
Flash flood in the Toga river, Kobe ( 28 July 2008 )
Small radar network observation
Invisible regionInvisibleregion
Big radar observation
F2 tornado in Tsukuba ( 6 may 2012 )
The observation area of MLIT C-band radar and X-band MP radar (small blue circles).
2. 3-dim precipitation distribution in isolated cumulonimbus (July 26, 2012)
3-1. PAWR Observation Range
3-2. Back-building localized heavy rainfalls around Uji (Aug 14, 2012)
• We showed some localized heavy rainfall events observed phased array weather radar using 3-dim visualization.
• We have developed real-time data processing system and are at work on creating the web page.
5. Summary17:38:16 17:40:16 17:42:16 17:44:16JST
17:30:16 17:32:16 17:34:16 17:36:16
10 km
5 km
Detailed( 10 sec. )
300 range×320 sector ( AZ ) ×110 angle ( EL ) ×2 byte = 20.3 MB / fileTotal size (13 files) : 275 MB / 10sec (~ 2.4TB/day ⇒ ) 220 Mbps
Normal( 30sec.)
600 range×300 sector ( AZ ) ×110 angle ( EL ) ×2 byte = 37.8 MB / fileTotal size (13 files) : 493 MB / 30sec (~ 1.4TB/day ⇒ ) 131 Mbps
Data conversion section(GPGPU)
Data accumulation section
NAS(14.5TB)
Offline collection section
Offline processing section
Monitoring control section
IQ data after DBF processing ( ~1 Gbps )
IQ data before DBF processing(~ 6 Gbps )
Data after radar processing( 220 Mbps )
DAS(12TB) RAID
Antenna Equipment
( 220 Mbps )
Handai APServer
RAID( 63TB)
Data Translate Server
RAID(42TB)
Osaka Univ. JGN-X Access Point (L2 Switch)
L3 Switch
ssh
ssh
Petabyte storage (Keihanna)
HUB ( GbE)
( 220 Mbps )
JGN-X ( NICT NW)Private NWOsaka Univ. NW
Osaka Univ.LAN
NICTScience Cloud
Data release server( Koganei )
Data analysis server( Koganei )
12 km
40 km
Kyoto60 km (radius)
Osaka Bay
SuitaAkashi
Kansai Airport
Nara
Uji
Kobe
0400JST
3-3. Stationary line-shaped rain- falls (18:51:20JST, July 22, 2012)
0400JST, Aug 14
2012
4-1. Data processing system
4-2. Publication (http://pawr.nict.go.jp)< Real-time data >
< Observation mode and data size / data rate >
< Past data >
< Evolution of cumulonimbus >
3-dim measurement using phased array
radar (10-30 sec)
3-dim measurement using a parabolic
antenna (5-10 min)
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