fred branski 1 january 21, 2005 noaa emergency managers weather information network (emwin) emwin...

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Fred Branski 1 January 21, 2005 NOAA Emergency Managers Weather Information Network (EMWIN) EMWIN website - http://iwin.nws.noaa.gov/emwin/index.htm Slide 2 January 21, 2005Fred Branski2 What is EMWIN? The Emergency Managers Information Network is a wireless, priority-driven computer weather data broadcast system providing timely watches, warnings, forecasts, other hydro-meteorological products, graphics and satellite imagery. The Emergency Managers Information Network is a wireless, priority-driven computer weather data broadcast system providing timely watches, warnings, forecasts, other hydro-meteorological products, graphics and satellite imagery. Uses NOAAs GOES satellites and low cost user receive systems Uses NOAAs GOES satellites and low cost user receive systems Data content prioritized to needs of emergency managers Data content prioritized to needs of emergency managers Satellite broadcast from GOES East and West Satellite broadcast from GOES East and West Rebroadcast in Pacific via PeaceSat4 Rebroadcast on VHF radio in certain areas Same bit stream available on Internet Slide 3 January 21, 2005Fred Branski3 What is EMWIN? EMWIN provides rapid dissemination of: EMWIN provides rapid dissemination of: Warnings < 2 minutes Forecasts ~ 5 minutes Graphics ~ 10 15 minutes Imagery ~ 10 15 minutes Other (as time permits) In severe weather non-warning products may take longer Slide 4 January 21, 2005Fred Branski4 EMWIN How it works Data are collected from a variety of sources Data are collected from a variety of sources NOAA/NWS Gateway, RTH Washington - GTS NOAA Weather Wire FTP Internet They are assembled at the EMWIN servers and: They are assembled at the EMWIN servers and: Prioritized Split into packets Assembled into a data stream The data stream is then sent to Wallops CDA (NESDIS) where it is: The data stream is then sent to Wallops CDA (NESDIS) where it is: Up-linked to satellite (GOES East & West) The data stream is then available to be received by user stations The data stream is then available to be received by user stations From here EMWIN products can be retransmitted by other methods Up-linked to another satellite (ex. PeaceSAT4) Up-linked to another satellite (ex. PeaceSAT4) Transmitted via radio frequency Transmitted via radio frequency Sent on the Internet (BYTE Blaster) Sent on the Internet (BYTE Blaster) Slide 5 January 21, 2005Fred Branski5 Methods of Dissemination Primary Wireless Methods Primary Wireless Methods GOES East and West PeaceSAT4 Secondary Wireless Methods Secondary Wireless Methods Commercial Satellites TV SAP channel TV Vertical Blanking Interval (VBI) Radio Pagers Internet Internet Slide 6 January 21, 2005Fred Branski6 NOAA EMWIN Architecture INTERNET CLOUD NOAA/NWS GATEWAY SYSTEM RTH WASHINGTON WMO GTS NOAA WEATHER WIRE SYSTEM Primary Servers Backup Servers BYTE BLASTER NETWORK WALLOPS CDAS GOES SPACE CRAFT DEDICATED ANALOG LINE EMWIN FEED SOURCES EMWIN TRANSMIT NETWORK EMWIN INTERNET PUSH BITSTREAM DEDICATED ANALOG LINE/T1 backup Tertiary Backup NOAA WEATHER WIRE SYSTEM EMWIN USERS Slide 7 January 21, 2005Fred Branski7 GOES Visibility Contours GOES West GOES East 5 Elevation 0 Elevation Slide 8 January 21, 2005Fred Branski8 GOES East and West footprint Slide 9 January 21, 2005Fred Branski9 Sample Forecast FPHW60 PHFO 201348 SFPHI STATE FORECAST FOR HAWAII NATIONAL WEATHER SERVICE HONOLULU HI 4 AM HST FRI JUN 20 2003 HIZ001>003-005-006-210200- STATE FORECAST FOR THE ISLANDS OF KAUAI-OAHU-MAUI-MOLOKAI-LANAI- 4 AM HST FRI JUN 20 2003...HIGH SURF ADVISORY CANCELLED AT 4 AM....TODAY AND SATURDAY...MOSTLY CLEAR BUT FOR ISOLATED SHOWERS. HIGHS MID 80S. LOWS 70 TO 75. TRADE WINDS 15 TO 25 MPH. HIGHS MID 80S. LOWS 70 TO 75. TRADE WINDS 15 TO 25 MPH..EXTENDED FORECAST....SUNDAY THROUGH TUESDAY...BECOMING PARTLY CLOUDY WITH SCATTERED WINDWARD SHOWERS MONDAY AND TUESDAY. HIGHS 80 TO 85. WINDWARD SHOWERS MONDAY AND TUESDAY. HIGHS 80 TO 85. LOWS 70 TO 75. TRADE WINDS 15 TO 25 MPH WEAKENING TO 10 TO 20 LOWS 70 TO 75. TRADE WINDS 15 TO 25 MPH WEAKENING TO 10 TO 20 MPH MONDAY AND TUESDAY. MPH MONDAY AND TUESDAY. Slide 10 January 21, 2005Fred Branski10 Sample Warning WEHW40 PHEB 012158 TSUHWX TEST TSUNAMI BULLETIN NUMBER 003 TEST PACIFIC TSUNAMI WARNING CENTER TEST 11:58 AM HST 01 APR 2003 TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST THIS FOLLOWING BULLETIN IS FOR A CIVIL DEFENSE EXERCISE. TEST TEST TO: CIVIL DEFENSE IN THE STATE OF HAWAII TEST TEST SUBJECT: LOCAL TSUNAMI WARNING CANCELLATION BULLETIN TEST TEST TEST EFFECTIVE IMMEDIATELY, THE URGENT TSUNAMI WARNING ISSUED TEST FOR ALL COUNTIES IN THE STATE OF HAWAII IS CANCELLED. TEST TEST AN EARTHQUAKE HAS OCCURRED WITH THE FOLLOWING PRELIMINARY TEST PARAMETERS: TEST ORIGIN TIME - 11:40 AM HST, 01 APR 2003 TEST COORDINATES - 19.2 NORTH, 155.9 WEST TEST LOCATION - NEAR SOUTH KONA, BIG ISLAND TEST MAGNITUDE - 7.6 Slide 11 January 21, 2005Fred Branski11 Sample Image Slide 12 January 21, 2005Fred Branski12 Sample Graphic Slide 13 January 21, 2005Fred Branski13 EMWIN in the Pacific GOES West broadcast GOES West broadcast PeaceSAT4 broadcast PeaceSAT4 broadcast Currently PeaceSAT4 rebroadcasts the entire EMWIN data- stream Some customized products added for the Pacific Provides advance warning of Tsunami and Typhoons Provides advance warning of Tsunami and Typhoons Testimonials received have reported that after a severe event the only weather system still functioning is EMWIN Testimonials received have reported that after a severe event the only weather system still functioning is EMWIN Many island nations already use EMWIN to save lives and property Many island nations already use EMWIN to save lives and property Slide 14 January 21, 2005Fred Branski14 Why it works so well The equipment is inexpensive The equipment is inexpensive An entire turnkey system costs as little as $1k System needs little to no infrastructure System needs little to no infrastructure Easy to run on a laptop Ex. Solar powered version exists Signal is Weather Proof due to L-Band transmission Signal is Weather Proof due to L-Band transmission Equipment is relatively compact and is very rugged Equipment is relatively compact and is very rugged The Data-stream is free, repeatable and can be customized for local retransmission The Data-stream is free, repeatable and can be customized for local retransmission EMWIN is non-proprietary EMWIN is non-proprietary Multiple inexpensive software display packages are available Multiple inexpensive software display packages are available A large and knowledgeable user community to help monitor performance and answer user questions (EMWIN user list) A large and knowledgeable user community to help monitor performance and answer user questions (EMWIN user list) Transmission covers 3/4 of world surface Transmission covers 3/4 of world surface Slide 15 January 21, 2005Fred Branski15 EMWIN current specs Frequency on GOES - 1690.725 MHz Frequency on GOES - 1690.725 MHz Modulation Dual Frequency Shift Keying (DFSK) Modulation Dual Frequency Shift Keying (DFSK) Speed - 9.6 kbps Speed - 9.6 kbps Power EIRP = 51 dBmi Power EIRP = 51 dBmi EMWIN website - http://iwin.nws.noaa.gov/emwin/index.htm Slide 16 January 21, 2005Fred Branski16 Why is change necessary? EMWIN shares spare bandwidth in the existing WEFAX channel EMWIN shares spare bandwidth in the existing WEFAX channel The EMWIN/WEFAX broadcast was allowed to exceed UN ITU authorized power level by special exception The EMWIN/WEFAX broadcast was allowed to exceed UN ITU authorized power level by special exception NESDIS GOES N/Q series will use all of former WEFAX channel bandwidth for new Low Rate Information Transfer (LRIT) broadcast NESDIS GOES N/Q series will use all of former WEFAX channel bandwidth for new Low Rate Information Transfer (LRIT) broadcast Must move EMWIN to its own channel, at reduced power Must move EMWIN to its own channel, at reduced power Slide 17 January 21, 2005Fred Branski17 What must change? With advent of GOES-N/P satellite generation With advent of GOES-N/P satellite generation Broadcast power must be reduced to comply with ITU power limits: From: 51.0 dBmi (minimum EIRP) From: 51.0 dBmi (minimum EIRP) To: 44.8 dBmi (minimum EIRP) To: 44.8 dBmi (minimum EIRP) Frequency must change: From: 1690.725 MHz From: 1690.725 MHz To: 1692.700 MHz To: 1692.700 MHz Modulation must change to partly offset reduction in broadcast power: From: DFSK modulation From: DFSK modulation To: OQPSK modulation To: OQPSK modulation Forward Error Correction (FEC) coding added to offset balance of power reduction and allow increased data rate Slide 18 January 21, 2005Fred Branski18 When Could Changes Occur? 2005 - 2011 2005 - 2011 GOES-N launch Official date: March 31/April 1 2005 Official date: March 31/April 1 2005 Unofficial date: Not Earlier Than (NET) July 2005 Unofficial date: Not Earlier Than (NET) July 2005 GOES-N Operational First broadcast of new EMWIN-N service: First broadcast of new EMWIN-N service: As early as 6-8 months after GOES-N launch As late as early 2011 Depends on fuel usage and subsystem health for both GOES 11 and GOES 12 Slide 19 January 21, 2005Fred Branski19 GOES N/P EMWIN Transition Objectives Listen to users & vendors Listen to users & vendors Keep them informed of changes Prepare and update a transition plan Prepare and update a transition plan Provide adequate time for changes to be made Establish an overall system design Establish an overall system design Develop a proof-of-concept prototype receiver Release schematics and operating software to industry for individual design and production Slide 20 January 21, 2005Fred Branski20 Informing & Listening EMWIN website - http://iwin.nws.noaa.gov/emwin/index.htm EMWIN website - http://iwin.nws.noaa.gov/emwin/index.htm EMWIN user groups EMWIN user groups Local outreach programs Local outreach programs Via W

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