The Canadian Lightning Detection Network (CLDN). Novel Approaches for Performance Measurement & Network Management. Meteorological Service of Canada D.

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Presentation transcript:

The Canadian Lightning Detection Network (CLDN). Novel Approaches for Performance Measurement & Network Management. Meteorological Service of Canada D. Dockendorff, K.Spring,

Introduction ► This presentation will provide:  Some background on the CLDN,  Describe how the network is used and managed  Illustrate some novel approaches to using the Internet for real-time performance measurement of the network.

► CLDN established in 1998 ► 83 Sensors ► Lightning detection coverage for over 95% of Canadians. Background

Background (cont’d) ► ► Unique challenges to design, fund, install and operate the CLDN. CanadaGermany Size10 M km K km 2 Population32M (2004)82M (2004) GDP$959B (2003 USD)$2,271B (2003 USD)

The “N” in CLDN – It’s a Network. ► Integrated with the US NLDN operated by Vaisala ► 199 sensors gathering lightning data in real time. ► Lightning location solutions available within seconds ► Fault tolerant (solutions NOT dependent upon any one sensor) ► Solutions generated 24/7/365 with 99.5+% availability ► No Intra Canada or Canada-USA Boundary Conditions (errors) ► Sensor Quantities  CLDN=83 in Canada owned by MSC (35% IMPACT ES, 65% LPATS)  NLDN (USA) =111 IMPACT ESP’s owned by Vaisala  Five More IMPACT ES sensors in Alaska contribute to CLDN solutions in summer and we to theirs. (Alaska Fire Svc)

CLDN + NLDN (USA) + Alaska = 199 Sensors

How the CLDN Works ► 1. Multiple Sensors detect a Lightning Stroke. Often 5-10 sensors. ► 2. Sensor immediately uplinks data to Satellite ► 3. Satellite downloads data to Telesat Hub in Toronto. ► 4. Data sent by land line to Tucson where all other data about this Stroke from all other sensors is used to calculate the solution location of the Stroke. ► 5. Solution information sent back to Telesat Hub. ► 6. Solution information uploaded to Satellite. ► 7. Solution information broadcast by Satellite to all users. ► Total time from Stroke to Solution Delivery to client nominally 30 seconds. Seldom more than 60 seconds.

Lightning The High Impact Weather Indicator Precursor to and indicator of strong gusty winds, tornados and hail.Precursor to and indicator of strong gusty winds, tornados and hail. Indicator of the severity and maturity of thunderstorms.Indicator of the severity and maturity of thunderstorms. Some relation between Rainfall amounts & Lightning FlashesSome relation between Rainfall amounts & Lightning Flashes High impact convective or lightning producing systems unlikely to escape detection by the CLDN.High impact convective or lightning producing systems unlikely to escape detection by the CLDN. Forecasters are making good use of the CLDN with simultaneous integrated display of Radar, Satellite & Lightning imageryForecasters are making good use of the CLDN with simultaneous integrated display of Radar, Satellite & Lightning imagery

Lightning Density The CLDN detects 5-10 million Flashes to Ground/Year over Canada. Flash densities: Low to moderate (.25 to 4 flashes/sq km/year). In Canada 2002: 46-70% of forest fires e caused by lightning. Average year: 7631 fires consume 2.8M hectares forest Lightning deaths: 3-8

Dynamic Performance Measurement. Network Status Grid ► Every 30 Minutes. ► Available to Clients.

Dynamic Performance Measurement. Sensor Status ► Every 30 Minutes. ► Internal MSC Use.

Dynamic Performance Measurement. Accuracy and Efficiency Maps ► Every 30 Minutes. ► Internal MSC Use.

Summary ► CLDN data is a reliable indicator of high impact weather ► CLDN provides lightning detection coverage for over 95% of Canadians. ► Data available within 30 to 60 seconds ► Internet accessible Performance Measurement tools enable MSC to efficiently monitor and display the status of the lightning detection sensors and the accuracy and efficiency of the CLDN in real time. ► The effects of sensor outages can easily be seen and action taken to minimize sensor down times. ► Performance Measurement provides input to network upgrade plans to sustain and further optimize the CLDN. ► Network gradually being upgraded with new LS7000 sensors

High Impact Weather Edmonton, Alberta

Lightning – Important at all Scales! Kamloops BC Hour/Color Red (hottest) most recent. Blue (coldest) oldest. St Catherines, ON Hour/Color Red (hottest) most recent. Blue (coldest) oldest. Canada & Northern USA Hour/Color Red (hottest) most recent. Blue (coldest) oldest.

Thank You Questions?