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Transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC)

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Presentation on theme: "Transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC)"— Presentation transcript:

1 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 1 North Alabama and DC Lightning Mapping presented at the SPoRT Science Advisory Committee (SAC) Meeting 12-14 June 2007 Richard J. Blakeslee, NASA/MSFC Dennis E. Buechler, UAH

2 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 2 Approach to Lightning Mapping New Mexico Tech Lightning Mapping ArrayNew Mexico Tech Lightning Mapping Array –Time-of-arrival system –10-12 stations over 50-70 km diameter area –Passive system: locates impulsive radio frequency signals produced by lightning (‘static’) –“Listens” in a locally unused VHF TV channel (e.g., Ch3, 5, 8, 10, etc.) –Produces observations in near real-time (4-D maps of the lightning channel) –Detects total lightning (i.e., CG and IC) with good spatial accuracy, temporal resolution, and high detection efficiency

3 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 3 Time-of-Arrival (TOA) Technique Signal arrives at station i (x, y, z ) at time t Impulsive lightning event at (x, y, z, t) The Lightning Mapping Array measures the time of arrival of RF radiation from a lightning discharge at multiple stations, and locates the sources of the radiation to produce a three-dimensional map of total lightning activity (x, y, z, t). Measure t i at N>4 locations ( 50 ns accuracy) Solve for x, y, z, t (4 unknowns) Solve for x, y, z, t (4 unknowns)

4 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 4 LMA Hardware LMA Hardware North Alabama LMA –LMA Sensor Sites VHF ground plane antenna Sensor electronics / site computer Communications (mostly 2.4 GHz wireless Ethernet network link) –Relay Sites and Central Station PC router (up to 4 network links) Communications (multiple antennas require great care in channel selection)

5 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 5 North Alabama Lightning Mapping Array - 10 stations over 65 x50 km diameter area - Operational since Nov. 2001 North Alabama LMA One hour of real-time data

6 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 6 Example of LMA Flash

7 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 7 North Alabama Observing Systems The LMA is a component of the Severe Thunderstorm Observation, Research, and Monitoring Network (STORMnet) providing total lightning mapping. STORMnet (as part of SPoRT) is a project to improve severe and hazardous weather forecasting and warning through collaboration among NASA and University scientists, NWS forecasters, and commercial partners. RADARS MIPS (Profilers) ASOS LMA

8 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 8 Total Lightning Data to the WFO Scientific Benefits to WFOs Increased Situational Awareness, Confidence Limits Rapid Update- Potential for increased lead time, reduced FAR Identification of intensifying and weakening storms, potential severe storms, microburst wind shears, CG threat area Fills gaps in radar coverage (e.g., edge of radar coverage) Use in Warning Event Simulator for office training Tennessee Alabama HUN CWA LMA AWIPS Area

9 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 9 Flow of LMA data into AWIPS NASA NWS FTP Server LDAD DS1 Forecaster AWIPS Workstation Wireless Ethernet (NALMA) or Internet (DCLMA) data xfer to base station for real-time processing Gridded LMA data Forecaster at Workstation WFO

10 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 10 NALMA Imagery in AWIPS  Source density grids in netCDF format  17 height levels (0-16 km)  Lowest level is composite  Auto-loads 2 min grids  2 km horizontal grid  1 km vertical  LMA image can display side-by-side with NEXRAD reflectivity and velocity, satellite, or other fields  LMA covers 7 WFO CWAs  Data provided to HUN, BMX, DGX, and OHX NWS offices CompositedBZ NLDN5-min LMA2-minVIL

11 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 11 History of NALMA data at HUN November 2001: LMA operations beginNovember 2001: LMA operations begin May 2003: Started ingesting LMA data into AWIPSMay 2003: Started ingesting LMA data into AWIPS May 6, 2003: First case LMA used to warnMay 6, 2003: First case LMA used to warn August 27, 2003: First case used to not issue a warningAugust 27, 2003: First case used to not issue a warning Summer 2003: Helped install LMA data at BMX and OHXSummer 2003: Helped install LMA data at BMX and OHX Building cases for training on WESBuilding cases for training on WES –Two sent to SRH WES case library –Many more cases archived (more than 30 so far) Assisted other offices with software and adviceAssisted other offices with software and advice

12 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 12 Alternate LISDAD II Display Along with AWIPS forecasters can interrogate data using LISDAD II software Provides location and number of LMA/NLDN samples Alternate to the AWIPS display Heritage: Melbourne, FL (NASA, NWS, MIT/LL)

13 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 13 Washington DC Metropolitan Lightning Mapper Demonstration Conceived at Southern Thunder Alliance Workshop (Ft Worth, TX, 2005; endorsed by SAC, 2005) Due to cancellation of VORTEX-II Experiment in 2007, pursue newly available opportunity to deploy, evaluate, and assess the scientific and technological merits of total lightning mapping with the NMT portable LMA in an additional operational setting. Why DC Metro Area? Transitional climatic regime, yet still many severe storms Coverage of 3 major heavily used airports Complex terrain to west, urban environment Sterling WFO history of supporting new technology assessments – Leverage with on-going TDWR evaluations Proximity of MDL developers to WFO forecasters Access to students, faculty for system operations/maintenance Local interest (broadcast community, researchers, forecasters)

14 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 14 Portable LMA Station (note: NSSTC now building 20 portable stations) Electronics housed in shielded thermoelectric cooler enclosure Operate from external 12 VDC battery and/or power supply. ~12 watts power Battery operation: 48+hours (w/out cooling) 20+ hours (with cooling) Lightweight (10 lbs) ¼ wave ground plane antenna (Ch. 8 shown; 180-186 MHz) Connected to receiver in box by coaxial cable Other external connectors: GPS antenna, ethernet, 12 VDC

15 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 15 Washington DC LMA Channel 10, 192-198 MHz (upper VHF) 8 stations operational, 10 stations planned (2007) Data ingested into AWIPS at higher spatial and temporal resolution (1 km x 1 km x 1 km x 1 min)

16 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 16 DC Severe Thunderstorms 4 July 2006 I used the DC-LMA web site to view updates on lightning activity during my shift at the command center (through about 3:45 PM). It was VERY useful, since I had no other "real-time" lightning data available. I used various links to NWS forecasts, radar, and satellite data via the Internet to conduct weather briefings to the command center staff. In addition, our WFO staff kept an eye on the DC area via all of the data available in AWIPS. … the DC-LMA data were VERY useful in monitoring storm activity. I was able to show the center staff where the lightning was occurring. In addition, I monitored changes in lightning coverage/intensity as a rough gauge of thunderstorm changes in intensity.” Steve Zubrick, WFO Sterling (LWX)

17 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 17 Severna Park, MD F1 Tornado 28 Sept. 2006 DC LMA 2100-2300 UTCDC LMA 2230-2232 UTC Severna Park

18 transitioning unique NASA data and research technologies to the NWS Lightning Activities in SPoRT: presented at SPoRT Science Advisory Committee (SAC) Meeting Huntsville, AL 12-14 June 2007 18 Public Web DC LMA Public Web Site (2006) Model that will be used for the NALMA http://branch.nsstc.nasa.gov/PUBLIC/DCLMA

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