APSDEU Sept 2006, Honolulu Hawaii 1 ASIA-PACIFIC RARS ADM DISCUSSIONS coordinated by David Griersmith at 7th Meeting of APSDEU, Honolulu Hawaii September 2006

APSDEU-7, Sept 2006, Honolulu Hawaii 2 Asia-Pacific RARS Issues (1) uAdd more stations to fill gaps uProject plan (Coordinator) uAAPP V6 coinciding with Metop – BUFR conversion built in uInter-regional data exchanges - when and where

APSDEU-7, Sept 2006, Honolulu Hawaii 3 New station status uAustralia - Casey & Davis, Antarctica - expected to provide AAPP files by April 2007 uCanada - n/a - Will be contacted around end of 2006 – have expressed interest in accessing Asia-Pacific region ATOVS data uSingapore - Singapore - Trial exchange planned for September/October 2006 between Singapore and Melbourne, thereafter expect to go operational uPhilippines - Quezon City - Station requires an upgrade plus AAPP uNew Zealand - MetService station yet to be upgraded; NIWA station operational Possibility of sourcing data from NIWA station uFiji - Nandi – upgrade of station required and possible by early FMS is committed to contributing to RARS uUSA – Honolulu - under discussion uAntarctica - Dumont D’Urville - TBD uMcMurdo - Station operators yet to be contacted pending coverage requirement uTahiti (France) - Tahiti - Station operator yet to be contacted pending coverage requirement uRussia -Vladivostok - Test exchange of data with Melbourne expected in Sept/Oct 2006 uHong Kong (China) - Hong Kong - Trial exchange to be requested for October 2006

APSDEU-7, Sept 2006, Honolulu Hawaii 4 Asia-Pacific RARS Issues (2) Coordinator to promulgate WMO RARS operator/contributor standards Coordinator to contact WMO/EUMETSAT with list of proposed three letter unique station identifiers Coordinator to establish data base of all HRPT stations in A-P RARS baseline network in coordination with ITSC/WMO – need assistance of contributing countries – status reports

APSDEU-7, Sept 2006, Honolulu Hawaii 5 Asia-Pacific RARS Issues (3) uFile naming l e.g. V5.3 renames files to hirsl1d_noaaNN_yyyymmdd_hhmm_nnnnn.l1d hhmm taken from HRPT file and is not time when s/w is run such as BUFR creation time uInter-regional centre requirements uADM trial led by China – Australia to write to China to participate in prototype/trial

APSDEU-7, Sept 2006, Honolulu Hawaii 6 Z_RARS_C_cccc_yyyyMMddhhmmss_Rrrr_(AAPP filename)_bufr.bin ①②③ JapanChinaAustraliaS. Korea ① Start Time of Reception BUFR Creating Time ？ ② Name of the receiving station Small letter Name of the central station Small letter Name of the receiving station Capital letter Name of the receiving station Small letter ③ AAPP_RUN naming regulation EARS naming regulation AAPP Temporarily name AAPP_RUN naming regulation Japan ： Z_RARS_C_RJTD_ _Rkiy_hirsl1c_noaa18_ _0546_06173_l1c_bufr.bin Australia ： Z_RARS_C_AMMC_ _RMEL_hrsn_l1c_bufr.bin China ： Z_RARS_C_BAWX_ _Rpek_hirs_ _0728_noaa18_06175_PEK_l1c_bufr.bin S. Korea ： Z_RARS_C_RKSL_??????????????_Rseo_hirsl1c_noaa17_ _0045_21316_l1c_bufr.bin

APSDEU-7, Sept 2006, Honolulu Hawaii 7 Asia-Pacific RARS Issues (4) Which are the intraregional dissemination centres (nodes) Tokyo, Melbourne, Beijing, possibly Seoul and Singapore? NWP impact studies to be advised to Coordinator and WMO Implementation of EUMETSAT quality software Coordinator to maintain and circulate table of focal points

APSDEU-7, Sept 2006, Honolulu Hawaii 8 The people: Focal Points A-P RARS uSingapore - Yong Miow Koon on uFiji - Leonard Bale on uChina - Li Xiang on also Licheng Zhao uCanada - Josee Morneau uKorea - Mi-Lim Ou on Dr Seon-Kyun Baek & Mr Dong-il Lee (telecomm); uRussia, Vladivostok - Anatoly Alexanin on uAustralia - David Griersmith on uNZ - Murray Douglas MetService & Michael Uddstrom NIWA uJapan - Takahiro Saito on RT comms also Hitomi Miyamoto, Hiroyuki Ichijo Yoshiaki Takeuchi & Akihiko Nakazono uUSA – NOAA NWS Bill Webb, James Heil - who else? uEumetsat/UKMO inter-regional contacts - Anders Soerensen & Dave Lee at Eumetsat Roger Saunders at UKMO Roger Carter and Nigel Atkinson

APSDEU-7, Sept 2006, Honolulu Hawaii 9 Current system configuration

APSDEU-7, Sept 2006, Honolulu Hawaii 10 Pacific gaps

APSDEU-7, Sept 2006, Honolulu Hawaii 11 Addendum: EUMETCast briefing information Sept 2006 This information is from a EUMETSAT presentation at RARS/IGDDS 3 rd meeting Aug- Sep 2006, WMO HQ, Geneva.

APSDEU-7, Sept 2006, Honolulu Hawaii 12 System Overview HRPT AAPP USERS UPLINK EUMETSAT NOAA EUMETCast STATIONS GTS

APSDEU-7, Sept 2006, Honolulu Hawaii 13 Concept & Overview uGeneric, multi-mission dissemination system based on the standard DVB multicast technology uUse of commercial telecommunication satellites uAllowing use of off-the shelf, commercial, inexpensive equipment uDVB/MPEG-2 based transport for carrying IP datagrams uUse of a set of broadcast satellite forward channels (no return channel) uComponents: l Data providers l Service management provider (EUMETSAT) l Uplink service provider l Turn around service provider(s) l Satellites l (Reference) Reception stations

APSDEU-7, Sept 2006, Honolulu Hawaii 14 Components Figure

APSDEU-7, Sept 2006, Honolulu Hawaii 15 Components uData Providers l Provide, via FTP over a number of communication lines (Internet, VPN, leased lines, …), the files to be disseminated, currently:  EUMETSAT  DWD (Germany)  OSI SAF (Norway & France & Netherlands)  Land SAF (Portugal)  VITO (Belgium, Vegetation Product) uService Management Provider (EUMETSAT) l Performs all service configuration (bandwidth, users, encryption parameters, dissemination parameters, …) to the DVB uplink provider via FTP over a secure communication line

APSDEU-7, Sept 2006, Honolulu Hawaii 16 Components uUplink Service Provider l Receives all data to be disseminated from all data providers l Co-ordinates the transmissions according to the service configuration l Encrypts the data according to the user dissemination configuration l Applies Forward Error Correction (FEC) to the data to be multicasted l Converts the files into Digital Video Broadcast l Broadcasts the signal using a commercial satellite l Receives the broadcasted data by a local reference reception station for service monitoring and service level agreement tracking l Current contract with T-Systems l Uplink station located in Usingen/Germany

APSDEU-7, Sept 2006, Honolulu Hawaii 17 Components uTurn around Service Provider(s) l Receives the DVB signal provided by the uplink service provider l Retransmits the data (on DVB packet level) to another S/C l Receives retransmitted data by a local reference reception station for service monitoring and service level agreement tracking l One turn around service implemented for African Users (not covered by the up-link service) l Current contract with Telespazio l Turn around station in Fucino/Italy

APSDEU-7, Sept 2006, Honolulu Hawaii 18 Components uSatellites l Commercial digital TV geostationary satellites for data reception and transmission l Up-link service S/C: Hotbird-6 Located at 13 degree East Ku-Band transponder used l Turn around service S/C: Atlantic Bird-3 Located at 5 degree West C-Band transponder used

APSDEU-7, Sept 2006, Honolulu Hawaii 19 EUMETCast Ku-Band Coverage

APSDEU-7, Sept 2006, Honolulu Hawaii 20 EUMETCast C-Band Coverage

APSDEU-7, Sept 2006, Honolulu Hawaii 21 Components uReception Stations l Antenna:  Size (diameter) depending on EIRP figure at location (=> table) l LNB:  For Ku-band: standard digital TV LNB  For C-band: different brands, proposed by service provider and used at EUMETSAT: California Amplifier

APSDEU-7, Sept 2006, Honolulu Hawaii 22 Components l DVB Receiver Cards used at EUMETSAT  TechniSat SkyStar2  BroadLogic 2030  Pentamedia l Workstations  Standard / state-of-the-art PC (with USB port) l Software  Operating Systems: Windows suite & LINUX  EUMETCast Client Software: tq®-TELLICAST  Supporting processing, monitoring & logging of incoming data l Configuration constraints:  Recommended/tested combinations: Ku/C-band DVB receiver card Operating System

APSDEU-7, Sept 2006, Honolulu Hawaii 23 Components

APSDEU-7, Sept 2006, Honolulu Hawaii 24 Components: Parts and Costs of a Reception Station DVB Standard Hardware LNB Ku-/C-band & Satellite Dish200/1500 EUR DVB PCI Card100 EUR DVB Multicast Client Software 60 EUR PC, Hard Disk, Ethernet1000 EUR 1.400/2700 EUR EUMETCast Key Unit (EKU) 40 EUR

APSDEU-7, Sept 2006, Honolulu Hawaii 25 C-Band Reception Issues u2.4 m antenna dish recommended for Africa & Europe (3.0 to 3.7 m for some African/Indian Ocean islands) u1.8 m dish in many cases sufficient (depending also on the quality (noise temperature) of the LNB uC-band significantly less susceptible than Ku-band to rain attenuation, but suffering frequently from electromagnetic interference (mainly radar) uImplementation of bandpass filters has shown good results => elimination of (nearly) all interferences

APSDEU-7, Sept 2006, Honolulu Hawaii 26 Current Services uHigh Rate SEVIRI Image Data - data from Meteosat-8  Low Rate SEVIRI Image Data - data from Meteosat-8  Rapid Scanning Service (RSS) - data from Meteosat-6  High Resolution Image (HRI) - data from Meteosat-7  Indian Ocean Data Coverage (IODC) - data from Meteosat-5  EUMETSAT ATOVS Retransmission Service (EARS)  Foreign Satellite Data (FSD) - data from GOES-n (MTSAT1-R to come)  Data Collection and Retransmission (DCP)  Meteorological Data Dissemination (MDD)  Meteorological Products from MSG MPEF  Meteorological Products from Satellite Application Facilities  DWDSAT  Basic Meteorological Data (BMD) for WMO RA VI  Vegetation Product

APSDEU-7, Sept 2006, Honolulu Hawaii 27 Data Rate per Service (average per day in Kbps) uHigh Rate SEVIRI Image Data710  Low Rate SEVIRI Image Data 15  Rapid Scanning Service (RSS) 48  High Resolution Image (HRI Met-7) 40  Indian Ocean Data Coverage (IODC) 42  ATOVS Retransmission Service (EARS) 30  Foreign Satellite Data (FSD) 14  Data Collection and Retransmission (DCP) 7  Meteorological Data Dissemination (MDD) 4  Meteorological Products from MSG MPEF 39  Meteorological Products from SAFs 55  DWDSAT 190  Basic Meteorological Data for WMO RA VI 10  Vegetation Product (3 times per month) 3

APSDEU-7, Sept 2006, Honolulu Hawaii 28 Current Allocation of Services on Channels Channels 2 & 3 are fed into the C-Band turn around service

APSDEU-7, Sept 2006, Honolulu Hawaii 29 Bandwidth Management & Service Directories uData of each channel is transmitted in the constraints of the bandwidth of the respective channel uWithin a channel, priorities can be assigned uData for each channel is provided via “Service Directories” uOne or more Service Directories are allocated to one channel uService Directories are implemented on the uplink server uAssociated with each Service Directory: l Distribution list (users entitled to receive the respective products l Allocation of bandwidth characteristics uData Providers transfer their data directly into the Service Directories

APSDEU-7, Sept 2006, Honolulu Hawaii 30 EUMETCast Multicast Configuration

APSDEU-7, Sept 2006, Honolulu Hawaii 31 Service Monitoring uEach data provider is responsible for the monitoring of its own data uEUMETSAT monitors the end to end service for the data provided by EUMETSAT uEUMETSAT supports the service monitoring of external data providers uEach service provider (up-link service and turnaround services) is responsible for monitoring its complete service (penalties in case of failing to accomplish the service level agreement)

APSDEU-7, Sept 2006, Honolulu Hawaii 32 Encryption uEnables independent targeting of files towards a single user or group of users uEnables secure control of access at individual file & user level uEncryption in accordance with EUMETSAT’s data policy uUsing the tq-tellicast server S/W uBased on the Blowfish algorithm (symmetric 128 bit data keys) uPerformed in the EUMETCast uplink server uData keys valid for just one transmission uData keys encrypted with private key of target user uOn the fly encryption, can be switched off on a per channel basis

APSDEU-7, Sept 2006, Honolulu Hawaii 33 Decryption uDecryption by the tq-tellicast client S/W in combination with a decryption device (EUMETCast Key Unit: EKU) and the EKU S/W package uEKU is an USB device uEKU in conjunction with corresponding username and user_key/password enables decryption of licensed services uOnly data described as “essential” are decrypted without EKU uEKUs are distributed by EUMETSAT to registered users