Total Lightning Detection Systems at Spaceflight Meteorology Group. Tim Oram Southern Thunder 2009 Workshop 28 July 2009. Overview. SMG Mission Why we need precise lightning data over a large area Definitions Various lightning detection systems in use at SMG
Southern Thunder 2009 Workshop
28 July 2009
Local Weather Support
Provide weather support to Johnson Space Center in Houston for protection of life and property
Includes Lightning Advisory (watch) and Lightning Alert (warning)
From “Lightning Lexicon” developed by Don MacGorman for Joint Action Group for Lightning Detection Systems (JAG/LDS)
UK Met Office Sferics Group
Spanish AEMET CG Flash
Ingested into AWIPS via LDADEuropean Detection Systems
NLDN CG Flash data in AWIPS
NLDN Total Lightning (including CG stroke) data in MIDDS
Example is NLDN Total Lightning Data
Stroke at JSC?
MIDDS: 21 Strokes and 3 Cloud Flashes (CF)
AWIPS: 10 CG Flashes
Houston LDAR netCDF Grid Group
KSC – 45th SW 4DLSSVHF Lightning Mapping Systems
A 12-minute loop of Houston LDAR data as displayed in AWIPS. Each image in loop is ten minutes of LDAR II sources and each image is two minutes apart. Red circle is the JSC warning area (6 mile radius). Data provided by Texas A&M University.
5-minutes of lightning data.
Similar to Operational Display (Operational display is black/white)
Individual sources displayed in real-time as received.
Field Mill Group
ThorguardLocal Detection Systems
A “field mill” measures the electrostatic field produced by the thunderstorm charges. A field mill can also detect the change in the electrostatic field when lightning destroys that charge.
“THOR GUARD TM effectively reads the activity within the electrostatic field through a proprietary program developed after hundreds of hours of thunderstorm monitoring, and will predict the probability of a lightning strike within a predetermined area of concern. This program can also project the potential for deadly "bolts out of the blue," which are strikes that seem to come from nowhere and cause a high percentage of lightning fatalities. “ (www.thorguard.com)