Transcript RTH Beijing

Role of RTH Beijing in exchanging
tsunami-related information
and
Status of the GTS system at RTH Beijing
National Meteorological Information Center, CMA
March 16, 2005, Jakarta
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Outline
• Requirements analysis
• Role of RTH Beijing in exchanging tsunami-related
information
• Status of the GTS system at RTH Beijing
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Requirements analysis
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• Functions of the TEWS
• Monitoring seismic and tidal stations throughout the India Ocean
• Evaluating potentially tsunamigenic earthquakes
• Disseminating tsunami warning information
• Key components of the TEWS
• Observation network
• Monitoring and evaluating centers for potentially tsunamigenic
earthquakes
• Communication
network
for
collecting,
exchanging
and
disseminating tsunami-related information in the India Ocean
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Information types, formats and transmission systems
•
Meteorological
observations,
products
•
Oceanic observations,
products
•
Seismic observations,
products
•
• ASCII
• observations
• Internet
• warnings
• Binary data formats
• products
• Graphical formats
Both real-time data
• products
and non real-time
• warnings
data
• GTS links
• Local leased lines
• Satellite System
• HF Radio
• Commercial radio and
TV channels
• …
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Data flow in the TEWS-IO
Meteorological
Observation
Network
Oceanic
Observation
Network
Tsunami Warning
System
GTS/DCP/Internet
Observations
Productions
Warnings
GTS/DCP/Internet
Observations
Observations
Observations
GTS
Seismic
Observation
Network
GTS/Leased line/Internet/
Satellite based broadcast
GTS Centers
(NMHSs in WMO Member Countries )
Warnings
Observations
Productions
Warnings
Intranet
Leased line
Concerned Services
- Oceanic service
- Seismic service
- …
Warnings
Internet
Disseminators
- Governments
- Public
Internet
Disseminators
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Operational rules needed for the tsunami-related
information exchange
• Data codes
–
Format of observations (?)
–
Format of warnings (T1T2=WE)
–
Format of products (?)
• Communication means and protocols
• Other rules
–
Time delays
–
Request/reply for Tsunami data
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Data codes
• Potential problem on sharing data among different services and
organizations
• Suggested solution
•
Using GTS codes to exchange tsunami information among the
different countries
•
Developing the abilities of translating tsunami information between
the GTS codes and the special formats which are used by the other
services or organizations at the concerned GTS centers
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Communication means and protocols
•
Communication means
• Data collection/Data exchange
– GTS/Leased lines/Internet
• Data distribution
–
•
GTS/Satellite based broadcasting/Internet
Protocols
• TCP/IP
• File based transmission
•
Transmission procedures
• GTS based transmission
– Requirements: upgrading the current asynchronous circuits and X.25 circuits in
concerned GTS centers to IP links
– WMO FTP
•
Internet based transmission
– FTP
– E-mail
– Web data Ingest
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Role of RTH Beijing in exchanging
tsunami-related information
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• Collecting tsunami-related information from other GTS centers
via GTS and Internet
• Collecting tsunami-related information from other concerned
services (e.g. State Oceanic Service, China Earthquake
Administration) in China via local leased lines
• Translating tsunami information between GTS codes and the
special formats which are used by the other services in China
• Disseminating tsunami-related information to other GTS
centers via GTS, CMA’s PCVSAT broadcasting system, and
Internet
• Disseminating tsunami-related information to other concerned
services (e.g. State Oceanic Service, State Seismic Service) in
China via local leased lines
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Status of the GTS system at RTH Beijing
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The GTS links at RTH Beijing
GTS link
SPEED
(Kbps)
CIRCUIT TYPE
PROTOCOL
Beijing-Offenbach
48/48
FR (RMDCN)
FTP
Beijing-Tokyo
48/48
FR (RMDCN)
TCP sockets
8/8
FR (RMDCN)
FTP
32/32
FR
TCP sockets
Beijing-Bangkok
9.6
Leased Line
X.25 PVC
Beijing-New Delhi
9.6
Leased Line
X.25 PVC
Beijing-Ulan Bator
14.4
Leased Line
FTP
Beijing-Pyongyang
75Baud
Leased Line
ASYNC
Beijing-Hanoi
75Baud
Leased Line
ASYNC
Beijing-Moscow
Beijing-Seoul
REMARKS
Planned move to
FTP over FR
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The GTS System at RTH Beijing
FTP
E-mail
DMZ
Internet
Web Server
Cisco
PIX Firewall
Back End
• IBM P650
Offenbach
RMDCN Routers
Cisco 2620
(HSRP)
IP over FR
GTS Router
Cisco 3640
IP over FR
Tokyo
Moscow
Cisco
PIX Firewall
• Duplicated system
• UNIX based
Front End
X.25 circuits
• AlphaServer ES40
• Duplicated system
• UNIX
MSS
Seoul
Bangkok
New Delhi
Router
Asynchronous circuits
Supporting FTP, TCP sockets,
X.25, Asynchronous
Hanoi
Pyongyang
Ulan Bator
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Daily traffic on GTS links
GTS link
Inbound (Bytes)
Outbound (Bytes)
Beijing-Offenbach
198M
1.2M
Beijing-Tokyo
35.6M
2.5M
Beijing-Moscow
11.3M
1M
Beijing-Seoul
7.9M
2.8M
Beijing-Bangkok
712K
890K
Beijing-New Delhi
896K
1.2M
Beijing-Ulan Bator
13.6K
586K
Beijing-Pyongyang
20K
685K
Beijing-Hanoi
25K
589K
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In addition to the GTS links
• The data exchange between Beijing and Kazakhstan has been
started from 2004.
• Internet
• E-mail based data exchange
• Data exchanged: observations
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Future Plans
• Beijing-New Delhi GTS link
– Being upgraded in March
– The new link: 8/8kbps FR link (RMDCN)
– Data exchange: FTP
• Suggestions on Beijing-Bangkok GTS link
– To better support the exchange of tsunami warnings
and information, the Beijing-Bangkok circuit should be
upgraded from X.25 to TCP/IP.
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Conclusions
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•
The current GTS, with improvement in circuit capacity and
communication protocols, can serve as a backbone for cross boundary
tsunami data exchange..
•
The Internet can be used for exchanging data and products.
– Cost effective
– Supplement to GTS
•
The satellite-based broadcasting systems can be used for data
dissemination
– Supplement to the low speed GTS links
– Improving the data collection in small NHMSs
•
RTH Beijing can support tsunami data exchange both via GTS and
over Internet
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Thank you!
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